SlideShare a Scribd company logo
1 of 45
Download to read offline
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 1 of 45
SDCS-02-17 REV.01
SDCS-02-17
Rev.01
CONSTRUCTION STANDARD FOR UNDERGROUND
DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
This document contains proprietary information developed by and for exclusive use of Saudi Electricity
Company (SEC) Distribution Network. Your acceptance of the document is an acknowledgment that it
must be used for the identified purpose/application and during the period indicated. It cannot be used or
copied for any other purposes nor released to others without prior written authorization of SEC
Distribution Sector. SEC shall assume no responsibility for any type of misuse and/or misapplication,
and any arm resulting there from. SEC also reserves the right take any necessary actions to protect its
interest against unauthorized use.
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 2 of 45
SDCS-02-17 REV.01
SDCS-02-17
Rev.01
CONSTRUCTION STANDARD FOR UNDERGROUND
DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 3 of 45
SDCS-02-17 REV.01
Table of Contents
1 INTRODUCTION .............................................................................................................4
2 SERVICE CONDITIONS AND CONSTRUCTION PARAMETERS ............................4
3 REVISION AND ADDITIONS ........................................................................................4
4 DEFINITIONS...................................................................................................................4
5 RIGHT-OF-WAY..............................................................................................................4
6 DIRECT BURIED CABLE INSTALLATION.................................................................5
7 SOIL CLASSIFICATION: ..............................................................................................15
8 SOIL AND ASPHAILT TEST........................................................................................16
9 Specification of Installation of Duct Bank at Road Crossing..........................................21
9.1 General:...................................................................................................................21
9.2 Excavation: .............................................................................................................21
9.3 Duct Bank construction ...................................................................................... 22
9.4 Backfilling and reinstatement............................................................................. 23
9.5 Duct cleaning and inspection .............................................................................. 23
9.6 Concrete Specification ....................................................................................... 24
10 General notes on Medium voltage HDD works...............................................................25
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 4 of 45
SDCS-02-17 REV.01
1 INTRODUCTION
This standard specifies the design, and installation practices to be applied in the
construction of MV and LV cable of underground distribution system. It is intended to
assist the engineers and field personnel to achieve standardization in construction and to
ensure a satisfactory and economical level of service without operating restrictions so
that the operational errors should be minimum for safety and reliability.
2 SERVICE CONDITIONS AND CONSTRUCTION
PARAMETERS
For construction and operation of underground cable distribution network, the service
conditions and system requirements shall be as given in the latest revision of SEC
General Specification No.01-SDMS-01.
3 REVISION AND ADDITIONS
This standard is subject to revision as new materials and methods of construction are
developed. The latest revision of this standard shall be applicable. Revised sheets shall
be issued from time to time and should be inserted as soon as these are received.
Superseded or obsolete sheets shall be removed immediately upon receipt of revised
sheets. The date of the latest issue of each sheet is printed at the top corner under the
standard number.
4 DEFINITIONS
Ultimate strength is the maximum load which a material will sustain when the load is
gradually increased until the rupture or failure takes place.
5 RIGHT-OF-WAY
If required by the local authority, the right-of-way (R-O-W) for the proposed route of an
underground cable must be obtained from the concerned authority-
(e.g. municipality, ministry of communication) during engineering stage of the project.
Given below is the procedure to be followed in obtaining R-O-W:
a. Prepare R-O-W drawing proposed showing proposed route of the underground
cable, cross-section of the trench or duct bank (if required) and location of other
utilities (e.g. telephone, water, sewer) lines along proposed route (if known).
b. Submit R-O-W drawing to the relations section in the concerned operating area.
c. The actual construction work shall not be started until the digging permit from
relevant authorities is obtained.
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 5 of 45
SDCS-02-17 REV.01
Standard R-O-W locations for underground utilities in streets of new areas have been
developed by the Ministry of Municipal and Rural Affairs in coordination with the
Ministry of Communications and the ministries having authority over the concerned
utilities.
6 DIRECT BURIED CABLE INSTALLATION
1.6‫الطرق‬ ‫في‬ ‫الخدمات‬ ‫تمديد‬ ‫ومواصفات‬ ‫شروط‬:
‫العامة‬ ‫الشروط‬‫المفتوح‬ ‫الخندق‬ ‫(طريقة‬:)
1.‫على‬‫والمواصف‬ ‫بالشروط‬ ‫التقيد‬ ‫المقاولين‬ ‫جميع‬.‫ات‬
2.‫على‬.‫بالعمل‬ ‫البدء‬ ‫قبل‬ ‫العالقة‬ ‫ذات‬ ‫الجهات‬ ‫قبل‬ ‫من‬ ‫الالزمة‬ ‫التصاريح‬ ‫علي‬ ‫الحصول‬ ‫المقاولين‬ ‫جميع‬
3.‫على‬‫يجدد‬ ‫لم‬ ‫ما‬ ‫العمل‬ ‫استئناف‬ ‫يجوز‬ ‫وال‬ ‫العالقة‬ ‫ذات‬ ‫الجهات‬ ‫قبل‬ ‫من‬ ‫انتهائه‬ ‫قبل‬ ‫التصريح‬ ‫تجديد‬ ‫المقاول‬
.ً‫ا‬‫نظام‬ ‫الترخيص‬
4.‫على‬.‫المتبع‬ ‫حسب‬ ‫الفرعية‬ ‫والبلديات‬ ‫المشاريع‬ ‫تنسيق‬ ‫مكتب‬ ‫مع‬ ‫التنسيق‬ ‫المقاول‬
5.‫على‬‫والصرف‬ ‫والتليفون‬ ‫والمياه‬ ‫الغاز‬ ‫تمديدات‬ ‫مثل‬ ‫األرض‬ ‫تحت‬ ‫الخدمات‬ ‫عن‬ ‫المعلومات‬ ‫تجميع‬ ‫المقاول‬
... ‫والكهرباء‬‫على‬ ‫والحصول‬ ،‫الخ‬ ...‫والبلديات‬ ‫الحكومية‬ ‫الدوائر‬ ‫من‬ ‫الالزمة‬ ‫التصاريح‬
6.‫ا‬ ‫المقاول‬ ‫على‬‫على‬ ‫الحصول‬ ‫من‬ ‫لتأكد‬.‫األخرى‬ ‫المرافق‬ ‫والمتنوعة‬ ‫الخاصة‬ ‫بالمواقع‬ ‫الالزمة‬ ‫التصاريح‬
1.6:‫السالمة‬ ‫شروط‬
‫و‬ ‫العامة‬ ‫والسالمة‬ ‫الحيطة‬ ‫إجراءات‬ ‫اتخاذ‬ ‫المقاول‬ ‫يراعي‬:‫اآلتي‬ ‫إنفاذ‬
1.‫و‬ ‫الحفرية‬ ‫أول‬ ‫اللوحات‬ ‫وضع‬‫أ‬‫و‬ ‫خرها‬‫التقاط‬ ‫عند‬‫المؤسسة‬ ‫أو‬ ‫(الشركة‬ ‫المقاول‬ ‫اسم‬ ‫تحمل‬ ‫الرئيسية‬ ‫عات‬‫و‬ )‫الشركة‬
‫السع‬‫اإلدارة‬ ‫و‬ ‫(القطاع‬ ‫للكهرباء‬ ‫ودية‬‫و‬ ‫لها‬ ‫التابع‬ ).‫العمل‬ ‫تصريح‬ ‫صورة‬
2.‫و‬ ‫اإلرشادية‬ ‫اللوحات‬ ‫استعمال‬‫و‬ ‫العاكسة‬ ‫الدولية‬ ‫التحذيرية‬‫و‬ ‫كافية‬ ‫بصورة‬ ‫المرورية‬ ‫الحواجز‬‫حسب‬ ‫ظاهرة‬
‫و‬ ‫المرور‬ ‫تعليمات‬.‫السالمة‬ ‫قسم‬ /‫المدني‬ ‫الدفاع‬ ‫إدارة‬
3.‫أمام‬ ‫الليل‬ ‫أثناء‬ ‫كافية‬ ‫إضاءة‬ ‫وضع‬‫و‬‫عل‬‫ى‬‫و‬ ‫الحفر‬ ‫جانبي‬‫عل‬‫ى‬‫عن‬ ‫تزيد‬ ‫ال‬ ‫مسافات‬2‫و‬ ‫متر‬‫ملونة‬ ‫اإلضاءة‬ ‫تكون‬
‫و‬‫عن‬ ‫تقل‬ ‫ال‬ ‫بطاقة‬15،‫وات‬‫بوضع‬ ‫فيكتفي‬ ‫اللحام‬ ‫بخصوص‬ ‫أما‬‫إل‬ ‫باإلضافة‬ ‫ملونة‬ ‫تحذيرية‬ ‫شرائط‬‫ى‬‫عواكس‬
.‫مناسبة‬ ‫إضاءة‬ ‫مع‬ ‫فسفورية‬
4.‫و‬ ‫للمشاة‬ ‫عبارات‬ ‫وضع‬‫عل‬ ‫السيارات‬‫ى‬‫عل‬ ‫المدن‬ ‫داخل‬ ‫الطولية‬ ‫الحفريات‬‫ى‬‫مسافات‬111‫عل‬ ‫متر‬‫ى‬‫و‬ ‫األكثر‬‫في‬
‫عل‬ ‫بالسكان‬ ‫اآلهلة‬ ‫غير‬ ‫المناطق‬‫ى‬‫مسافة‬211.‫حد‬ ‫كأقصى‬ ‫متر‬
5.‫عل‬ ‫صراحة‬ ‫النص‬ ‫حالة‬ ‫في‬ ‫إال‬ ‫الجانبين‬ ‫من‬ ‫أي‬ ‫إغالق‬ ‫يجوز‬ ‫فال‬ ‫جانبين‬ ‫من‬ ‫مكون‬ ‫الشارع‬ ‫كان‬ ‫إذا‬‫ى‬‫في‬ ‫ذلك‬
.‫للمقاول‬ ‫الممنوح‬ ‫التصريح‬
6.‫عل‬ ‫يجب‬ ‫طريق‬ ‫أي‬ ‫قفل‬ ‫حالة‬ ‫في‬‫ى‬‫ت‬ ‫بعمل‬ ‫القيام‬ ‫المقاول‬‫عل‬ ‫مسفلتة‬ ‫حويلة‬‫ى‬‫و‬ ‫حسابه‬‫تنسيق‬ ‫مكتب‬ ‫مع‬ ‫بالتنسيق‬
‫و‬ ‫المشاريع‬‫و‬ ‫المرور‬ ‫إدارة‬.‫باألمانة‬ ‫الصيانة‬ ‫إدارة‬
1.6:‫الفنية‬ ‫العامة‬ ‫الشروط‬
1.‫و‬ ‫المنفذة‬ ‫األعمال‬ ‫كل‬‫تكون‬ ‫أن‬ ‫ينبغي‬ ‫المستخدمة‬ ‫المواد‬‫متوافقة‬‫والشروط‬ ‫والمقاسات‬ ‫والمقاطع‬ ‫الخطوط‬ ‫مع‬
.‫المواصفات‬ ‫في‬ ‫المذكورة‬ ‫واالحتماالت‬
2..‫العمل‬ ‫في‬ ‫استخدامها‬ ‫قبل‬ ‫الشركة‬ ‫قبل‬ ‫من‬ ‫تقبل‬ ‫أن‬ ‫ينبغي‬ ‫المستخدمة‬ ‫المواد‬
3..‫عنها‬ ‫تزيد‬ ‫أو‬ ‫المواصفات‬ ‫مع‬ ‫تتوافق‬ ‫أن‬ ‫ينبغي‬ ‫العمل‬ ‫في‬ ‫المستخدمة‬ ‫المواد‬ ‫جميع‬
4.‫عل‬‫ى‬‫و‬ ‫تحديد‬ ‫المقاول‬.‫للعمل‬ ‫تنفيذه‬ ‫عند‬ ‫األرض‬ ‫تحت‬ ‫المرافق‬ ‫حماية‬
5.‫االختب‬‫و‬ ‫(بالموقع‬ ‫الالزمة‬ ‫ارات‬‫المعامل‬‫سال‬ ‫من‬ ‫للتأكد‬ )‫الد‬ ‫مة‬‫حيث‬.‫الحاجة‬ ‫حسب‬ ‫تؤخذ‬
6.‫على‬‫و‬ ‫لسحب‬ ‫الالزمة‬ ‫المعدات‬ ‫تجهيز‬ ‫المقاول‬‫أو‬ ‫المياه‬ ‫شفط‬‫و‬ ‫الحفريات‬ ‫تدخل‬ ‫التي‬ ‫الجوفية‬ ‫المياه‬.‫العمل‬ ‫مواقع‬
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 6 of 45
SDCS-02-17 REV.01
Note: Being the most economical way, direct earth buried cable laying has been
standardized except where the cable route intersects road, street and other utility mains.
The major activities associated with direct buried cable installation are trench excavation,
cable laying, are described in the following sections. through is trench constructions for
direct buried cable.
6.4 Trench Excavation
Before proceeding with actual work of trench excavation, following preparations should
be completed:
a. Review the cable route drawings, R-O-W drawings, digging permit, and inspect
the cable route from end to end.
b. Decide locating where cable drums shall be unloaded at site, keeping in view the
actual cable lengths on drums.
c. Decide locations of cable joints. Avoid street intersections. Joints should
preferably be made no closer than 10 meters from edge of any street
intersections.
d. Obtain necessary permissions from the traffic police for the work schedule,
warning and lights and design of detours.
e. Keep ready the necessary number of night warning lamps, stands, wooden/steel
bridges for maintaining pedestrian
f. Arrange necessary manpower keeping in view the work schedule and expiry date
of digging permit.
6.4.1 Trench Specification
‫الحفريات‬ ‫مواصفات‬:-
1.‫ينبغي‬‫أ‬‫بالكابالت‬ ‫الحفريات‬ ‫تكون‬ ‫ن‬‫و‬‫اإل‬ ‫قدر‬ ‫مستقيمة‬ ‫المواسير‬‫أ‬ ‫و‬ ‫مكان‬‫و‬ ‫فقية‬‫و‬ ‫عمودية‬‫تحويل‬ ‫وجود‬ ‫حالة‬ ‫في‬
‫يجب‬‫أ‬‫بتدرج‬ ‫يكون‬ ‫ن‬‫المواصفات‬ ‫حسب‬‫با‬ ‫الخاصة‬.‫للضرر‬ ‫الكابل‬ ‫لتعرض‬ ‫منعا‬ ‫لكابالت‬
2.‫يجب‬ ‫الحفريات‬‫أ‬‫تمدد‬ ‫ن‬‫إ‬( ‫لى‬111‫م‬‫لي‬‫م‬‫الكي‬ ‫تحت‬ ‫من‬ ) ‫تر‬‫يقل‬ ‫ما‬ ‫على‬ ‫للسماح‬ ‫الماسورة‬ ‫أو‬ ‫بل‬‫من‬(111‫م‬‫لي‬‫م‬‫تر‬)
‫من‬‫و‬ ‫حول‬ ‫الناعم‬ ‫الرمل‬. ‫الكابل‬ ‫تحت‬
3.( ‫بعمق‬ ‫تكون‬ ‫ان‬ ‫يجب‬ ‫الحفريات‬651‫م‬‫لي‬‫م‬‫تر‬( ‫و‬ ‫المنخفض‬ ‫الضغط‬ ‫كابالت‬ ‫لحفريات‬ )811‫م‬‫لي‬‫م‬‫تر‬‫لحفريات‬ )
‫و‬ ‫المتوسط‬ ‫الضغط‬ ‫كابالت‬‫يجب‬ ‫العمق‬ ‫هذا‬ ‫عن‬ ‫زيادة‬ ‫الحفر‬ ‫حالة‬ ‫في‬‫أ‬‫الردم‬ ‫إعادة‬ ‫تتم‬ ‫ن‬‫إ‬‫العمق‬ ‫لى‬‫بمواد‬ ‫المطلوب‬
‫د‬ ( ‫بنسبة‬ ‫مختارة‬55‫حسب‬ ) %ASDM( ‫على‬ ‫المحتوية‬ ‫للتربة‬15# ( ‫رقم‬ ‫المنخل‬ ‫من‬ ) ‫مار‬ %211(‫أو‬
(85( ‫أقل‬ ‫على‬ ‫المحتوية‬ ‫الصرف‬ ‫لحرية‬ ‫المستخدمة‬ ‫الصقة‬ ‫الغير‬ ‫للتربة‬ ‫نسبية‬ ‫كثافة‬ ) %15‫الغير‬ ‫للمادة‬ ) %
‫الترب‬ ‫بالستيكية‬‫ة‬# ( ‫رقم‬ ‫المنخل‬ ‫من‬ ‫المارة‬211.)
4.‫األ‬‫يجب‬ ‫الحفرية‬ ‫في‬ ‫الضعيفة‬ ‫أو‬ ‫اللينة‬ ‫جزاء‬‫أ‬‫أو‬ ‫سبق‬ ‫ما‬ ‫حسب‬ ‫تد‬ ‫ن‬‫أ‬‫بموا‬ ‫الضعيفة‬ ‫التربة‬ ‫تغيير‬ ‫يتم‬ ‫ن‬‫ردم‬ ‫د‬
‫مختارة‬‫المواصفات‬ ‫حسب‬ ‫جيدة‬.
5.‫يكون‬ ‫أن‬ ‫يجب‬ ‫الحفرية‬ ‫أسفل‬‫متساوي‬‫و‬‫و‬ ‫الصخور‬ ‫من‬ ‫خال‬‫الحادة‬ ‫المواد‬‫التي‬‫بالكابل‬ ‫تضر‬ ‫أن‬ ‫يمكن‬.
6.‫الحفرية‬ ‫عرض‬‫المتوسط‬ ‫الجهد‬ ‫لكابالت‬ ‫العادية‬(411‫م‬‫لي‬‫م‬‫لكي‬ ) ‫تر‬‫و‬ ‫واحد‬ ‫بل‬‫عرض‬(611‫م‬‫لي‬‫م‬‫تر‬)‫و‬ ‫للكابلين‬(
511‫م‬‫لي‬‫م‬‫تر‬)‫و‬ ‫كابالت‬ ‫لثالث‬‫يتم‬‫إ‬‫ضافة‬(311‫م‬‫لي‬‫م‬‫تر‬)‫كي‬ ‫لكل‬‫إضافي‬ ‫بل‬.
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 7 of 45
SDCS-02-17 REV.01
7.‫الحفرية‬ ‫عرض‬‫المنخفض‬ ‫الجهد‬ ‫لكابالت‬ ‫العادية‬(411‫م‬‫لي‬‫م‬‫تر‬‫كابالت‬ ‫لثالث‬ )‫و‬‫يتم‬‫إ‬‫ضافة‬(111‫م‬‫لي‬‫م‬‫تر‬)‫لكل‬
‫ك‬‫ي‬‫إضافي‬ ‫بل‬.
8.‫الردم‬ ‫يتم‬‫ال‬ ‫حول‬‫منشئ‬‫ا‬‫و‬ ‫التفتيش‬ ‫غرف‬ ‫مثل‬ ‫ت‬‫التجمع‬‫و‬‫الخ‬ .... ‫المحابس‬ ‫غرف‬،‫باستخد‬‫مناسبة‬ ‫ردم‬ ‫مواد‬ ‫ام‬
‫مع‬ ‫محسنة‬ ‫مواد‬ ‫لها‬ ‫يضاف‬‫و‬ ‫بالماء‬ ‫الرش‬‫و‬ ‫جيدا‬ ‫الخلط‬‫نسبة‬ ‫حتى‬ ‫الد‬55‫مع‬ ‫القصوى‬ ‫الجافة‬ ‫الكثافة‬ ‫من‬ %
‫المدة‬ ‫مراعاه‬‫التي‬‫يجب‬‫أ‬‫و‬ ‫الردم‬ ‫عملية‬ ‫بين‬ ‫تفصل‬ ‫ن‬‫صب‬‫ال‬‫منشئا‬‫ت‬‫الخرسانية‬.
‫الدقيقة‬ ‫الحفريات‬:
1.( ‫الدقيقة‬ ‫الحفرية‬ ‫عرض‬211‫مليمتر‬‫لك‬ )‫ي‬‫سواء‬ ‫واحد‬ ‫بل‬‫المتوسط‬ ‫للجهد‬.
2.‫الدقيقة‬ ‫الحفرية‬ ‫عرض‬‫لك‬‫ي‬‫بل‬( ‫المنخفض‬ ‫الجهد‬211‫م‬‫لي‬‫م‬‫تر‬)‫أو‬ ‫الواحد‬ ‫للكابل‬‫ل‬‫لك‬‫ي‬.‫فقط‬ ‫بلين‬
‫التنفيذ‬ ‫خطوات‬:
1.‫اإل‬ ‫األعمال‬‫و‬ : ‫دارية‬‫إ‬ ‫تشمل‬‫ص‬‫و‬ ‫فسح‬ ‫دار‬‫الال‬ ‫التصاريح‬ ‫على‬ ‫الحصول‬.‫العمل‬ ‫لتنفيذ‬ ‫زمة‬
2.‫الطبيعة‬ ‫على‬ ‫الموقع‬ ‫تحديد‬‫و‬ :‫و‬ ‫العمل‬ ‫مكان‬ ‫تحديد‬ ‫ذلك‬ ‫يشمل‬‫و‬ ‫المشروع‬ ‫سير‬ ‫خط‬‫الزمني‬ ‫البرنامج‬ ‫عمل‬‫ل‬‫لتنفيذ‬‫و‬
.‫مرحلة‬ ‫لكل‬ ‫الزمنية‬ ‫المدة‬
3.‫و‬ ،‫والعاملين‬ ‫العمل‬ ‫موقع‬ ‫تأمين‬:‫يشمل‬
a.‫و‬ ‫بالمشروع‬ ‫الخاصة‬ ‫اللوحة‬ ‫وضع‬‫المشروع‬ ‫اسم‬ ‫المتضمن‬‫و‬‫وال‬ ‫الفسح‬ ‫ورقة‬‫المشروع‬ ‫لها‬ ‫التابعة‬ ‫جهة‬
‫و‬‫و‬ ‫المقاول‬ ‫اسم‬‫المشروع‬ ‫كروكي‬)‫(خريطة‬‫و‬‫و‬ ‫الزمنية‬ ‫المدة‬‫ما‬‫إ‬.‫ذلك‬ ‫لى‬
b.‫الحما‬ ‫وسائل‬ ‫وضع‬‫و‬ ‫ية‬‫األ‬.‫مان‬
4.‫ال‬ ‫تخطيط‬.‫المعتمد‬ ‫الزمني‬ ‫والجدول‬ ‫تنفيذها‬ ‫المطلوبة‬ ‫للمرحلة‬ ‫تبعا‬ ‫الحفر‬ ‫مسار‬ ‫تخطيط‬ ‫يتم‬ : ‫موقع‬
5.‫حيث‬ ‫الحفر‬ ‫أعمال‬:‫التالية‬ ‫للشروط‬ ً‫ا‬‫تبع‬ ‫العمل‬ ‫يتم‬
a.‫الترنشز‬ ‫بواسطة‬ ‫الحفر‬‫و‬‫بعرض‬211‫م‬‫لي‬‫م‬‫تر‬.
b.‫نق‬‫الترنشز‬ ‫من‬ ‫مباشرة‬ ‫الحفر‬ ‫مخلفات‬ ‫ل‬‫إ‬‫القالب‬ ‫لى‬.
c.‫مر‬‫اعا‬‫ة‬‫الحفر‬ ‫استقامة‬.
d.‫حسب‬ ‫الحفر‬ ‫يكون‬‫والمتابعة‬ ‫التنسيقات‬ ‫مكتب‬ ‫بنظام‬ ‫المحدد‬ ‫العمق‬.
6.‫أ‬‫و‬ ‫مناسبة‬ ‫ردم‬ ‫مواد‬ ‫استخدام‬ ‫يتم‬ : ‫الردم‬ ‫عمال‬‫األ‬ ‫من‬ ‫معتمدة‬‫و‬ ‫مانة‬. ‫الحفر‬ ‫عمق‬ ‫بكامل‬
( ‫العادية‬ ‫الخرسانية‬ ‫الخلطة‬ ‫استخدام‬ ‫يمكن‬ ‫كما‬1.8‫م‬3
‫بحص‬‫ى‬, ‫متدرج‬1.4‫م‬3
, ‫نظيف‬ ‫رمل‬251)‫اسمنت‬ ‫كجم‬.
‫التدرج‬
‫المنخل‬ ‫رقم‬16#31#51#111#211#
‫نسبة‬‫المار‬
‫المادة‬ ‫من‬%
111-5555-5455-5515-163-1
‫جدول‬1.‫المعتمدة‬ ‫المناخل‬ :
‫ب‬‫اإلضافة‬‫إ‬‫الشك‬ ‫معالج‬ ‫لى‬Accelerator(2‫لتر/م‬3
‫كحد‬‫أ‬)‫دنى‬،‫بشكل‬ ‫ميكانيكية‬ ‫بطريقة‬ ‫المكونات‬ ‫خلط‬ ‫يجب‬ ‫كما‬
‫الخلط‬ ‫تجانس‬ ‫يضمن‬:
7.‫الالصقة‬ ‫المادة‬‫المادة‬ ‫يستخدم‬ :RC2‫بمعدل‬1.5‫كجم/م‬2
‫و‬‫مادة‬MC1( ‫بمعدل‬65,1-75,1‫لتر/م‬ )2
‫و‬‫ترش‬
‫و‬ ‫الميكانيكية‬ ‫باألجهزة‬‫الردم‬ ‫طبقات‬ ‫شك‬ ‫منتظمة‬ ‫بطريقة‬‫و‬‫المقصوص‬ ‫االسفلت‬ ‫جوانب‬ ‫تنظيف‬ ‫بعد‬.
8.‫أ‬‫االسفلت‬ ‫عمال‬‫بعرض‬ ‫لإلسفلت‬ ‫الكشط‬ ‫يتم‬ :1‫بعد‬ ‫متر‬‫إ‬‫عن‬ ‫يقل‬ ‫ال‬ ‫بسمك‬ ‫الردم‬ ‫تمام‬6‫و‬ ‫الفرعية‬ ‫للشوارع‬ ‫سم‬8
‫الرئيس‬ ‫للشوارع‬ ‫سم‬‫إ‬ ‫و‬ ‫ة‬‫السفلت‬ ‫عادة‬‫ه‬‫على‬ ‫المكشوطة‬ ‫الطبقات‬ ‫لكامل‬‫أ‬‫الح‬ ‫موقع‬ ‫يكون‬ ‫ن‬‫و‬ ‫الكشط‬ ‫منتصف‬ ‫في‬ ‫فر‬
‫اآل‬ ‫يراعى‬ ‫أن‬:‫تي‬
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 8 of 45
SDCS-02-17 REV.01
a.‫مادة‬ ‫ورش‬ ‫الجوانب‬ ‫تنظيف‬RC2.
b.‫للمواصفات‬ ‫ومطابقة‬ ‫معتمدة‬ ‫االسفلتية‬ ‫الخلطة‬ ‫تكون‬.
c.‫اال‬‫و‬ ‫بالمنسوب‬ ‫لتزام‬‫الطريق‬ ‫ميول‬.
d.‫األ‬ ‫للقطوعات‬ ‫الفرادة‬ ‫استخدام‬ ‫يتم‬‫من‬ ‫طول‬311‫متر‬.
5.‫إ‬‫الطريق‬ ‫مكونات‬ ‫عادة‬‫يجب‬ :‫إ‬‫من‬ ‫الطريق‬ ‫مكونات‬ ‫عادة‬‫أ‬‫و‬ ‫رصفة‬‫علي‬ ‫كانت‬ ‫ما‬ ‫على‬ ‫مرورية‬ ‫عالمات‬‫ه‬‫بد‬ ‫قبل‬‫ء‬
.‫العمل‬
11.‫أ‬‫و‬ ‫الردم‬ ‫طبقات‬ ‫من‬ ‫عينات‬ ‫خذ‬:‫اختبارها‬
a.‫الردم‬ ‫مواد‬:‫يتم‬‫أ‬‫كل‬ ‫عينة‬ ‫خذ‬411‫ف‬ ‫طولي‬ ‫متر‬‫أ‬‫يوم‬ ‫لكل‬ ‫قل‬.
b.‫ال‬‫البصري‬ ‫تقييم‬‫الالصقة‬ ‫المواد‬ ‫تقييم‬ ‫يتم‬ :.
11.‫االسفلت‬ ‫اختبار‬:‫حيث‬‫بنسبة‬ ‫االسفلت‬ ‫د‬ ‫يتم‬53-55%‫و‬‫عمل‬ ‫يتم‬‫اال‬‫خت‬‫بار‬‫الخاصة‬ ‫ات‬‫بال‬‫خلطة‬‫اال‬‫لكل‬ ‫سفلتية‬
‫إ‬‫نتاج‬‫أ‬‫من‬ ‫قل‬511‫و‬ ‫طن‬‫عينة‬‫إ‬‫ضافية‬‫إ‬‫بالمواد‬ ‫شك‬ ‫هنا‬ ‫كان‬ ‫ذا‬.
:‫االسفلت‬ ‫قطع‬
1.( ‫عن‬ ‫يقل‬ ‫ال‬ ‫وباتساع‬ ‫بالمنشار‬ ‫القطع‬ ‫يكون‬151( ‫أو‬ ‫والقروية‬ ‫البلدية‬ ‫الشئون‬ ‫وزارة‬ ‫مواصفات‬ ‫حسب‬ ) ‫مم‬211
‫مليمتر‬( ‫بعمق‬ ‫جانب‬ ‫كل‬ ‫من‬ ‫الحفرية‬ ‫عرض‬ ‫عن‬ ‫زيادة‬ ‫المواصالت‬ ‫وزارة‬ ‫مواصفات‬ ‫حسب‬ )411‫مليمتر‬‫في‬ )
‫و‬ ‫األساس‬ ‫تحت‬ ‫ما‬ ‫طبقة‬ ‫وجود‬ ‫حالة‬‫وجودها‬ ‫عدم‬ ‫حالة‬ ‫في‬‫ال‬ ‫بعمق‬ ‫يكون‬‫اال‬ ‫طبقة‬ ‫عمق‬ ‫عن‬ ‫يقل‬‫في‬ ‫الموجودة‬ ‫سفلت‬
.‫الطريق‬
2.‫بزيادة‬ ‫االسفلت‬ ‫قطع‬ ‫يكون‬ ‫متر‬ ‫عن‬ ‫عرضها‬ ‫يزيد‬ ‫التي‬ ‫الحفريات‬ ‫حالة‬ ‫في‬ ‫أما‬( ‫بمقدار‬ ‫الحفرية‬ ‫عرض‬ ‫عن‬151
‫مليمتر‬‫كال‬ ‫في‬ ).‫الحالتين‬
3.‫من‬ ‫أقل‬ ‫الرصيف‬ ‫عن‬ ‫الحفرية‬ ‫بعد‬ ‫كان‬ ‫وإذا‬ ‫اللجنة‬ ‫قبل‬ ‫من‬ ‫والمحددة‬ ‫فقط‬ ‫الفرعية‬ ‫الشوارع‬ ‫حالة‬ ‫في‬‫من‬ ‫أقل‬ ‫أو‬ ‫متر‬
‫حافة‬ ‫عن‬ ‫مترين‬‫رصيف‬ ‫وجود‬ ‫عدم‬ ‫حالة‬ ‫(في‬ ‫المبني‬.‫المشروع‬ ‫صاحب‬ ‫مواصفات‬ ‫حسب‬ ‫الحفرية‬ ‫عرض‬ ‫يكون‬ ،)
6.4.2 Excavation
In deciding at what depth the trench should be excavated, it is necessary to take
intoconsideration the changes being made in the existing grade level by any earth cut or
fillwork to be carried out later. Such information should be gathered from the Ministry
ofcommunications or municipality so that ultimately the standard depth of cable can
beachieved.Trenches may be dug by hand or, if site conditions permit, a mechanical
excavator canbe used. Asphalt shall be cut by a motor driven saw. Manual digging shall
be used atlocations where existing underground facilities are encountered. Existing
facilitiesuncovered during excavation shall be protected, shored, braced and supported,
asnecessary. All protective covers, warning tapes, position markers, etc., pertaining
toexisting underground utilities shall be preserved during excavation and restored
inposition during backfilling.
‫أعمال‬:‫الحفر‬
1.‫تتم‬‫وتحت‬ ‫االسفلت‬ ‫طبقات‬ ‫علي‬ ‫مطاطية‬ ‫أو‬ ‫خشبية‬ ‫ألواح‬ ‫بوضع‬ ‫االلتزام‬ ‫مع‬ ‫المناسبة‬ ‫بالمعدات‬ ‫الحفر‬ ‫عملية‬
‫و‬ ،‫بخوازيق‬ ‫المنتهية‬ ‫األرجل‬ ‫ذات‬ ‫اآلالت‬ ‫استخدام‬ ً‫ا‬‫بات‬ ً‫ا‬‫منع‬ ‫ويمنع‬ ‫المعدات‬‫إعادة‬ ‫يمكن‬ ‫ال‬ ‫التي‬ ‫الحفر‬ ‫نواتج‬ ‫تحمل‬
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 9 of 45
SDCS-02-17 REV.01
‫ب‬ ‫العمل‬ ‫موقع‬ ‫تنظيف‬ ‫ويتم‬ ‫العمل‬ ‫موقع‬ ‫خارج‬ ‫مباشرة‬ ‫استخدامها‬‫الخاصة‬ ‫الحفر‬ ‫مخلفات‬ ‫حمل‬ ‫ويتم‬ ‫دائمة‬ ‫صفة‬
.‫الغرض‬ ‫لذلك‬ ‫المخصصة‬ ‫األماكن‬ ‫في‬ ‫ليرمي‬ ‫المدينة‬ ‫خارج‬ ‫إلي‬ ‫الكبيرة‬ ‫بالمشاريع‬
2.‫خ‬ ‫الخدمة‬ ‫بتمديد‬ ‫الخاصة‬ ‫الخنادق‬ ‫تكون‬ ‫أن‬ ‫يجب‬‫و‬ ‫الجوفية‬ ‫المياه‬ ‫من‬ ً‫ا‬‫تمام‬ ‫الية‬‫عمل‬ ‫قبل‬ ‫غيرها‬‫يجب‬ ‫كما‬ ‫التمديد‬ ‫ية‬
‫ل‬ ‫جانبي‬ ‫تدعيم‬‫األتربة‬ ‫انهيار‬ ‫لمنع‬ ‫لخندق‬‫في‬ ‫بأول‬ ً‫ال‬‫أو‬ ‫الزائدة‬ ‫الحفريات‬ ‫من‬ ‫التخلص‬ ‫مع‬ ‫ذلك‬ ‫طبيعتها‬ ‫استلزمت‬ ‫إذا‬
.‫المشرف‬ ‫المهندس‬ ‫يحددها‬ ‫أماكن‬
3.‫على‬ ‫المحافظة‬ ‫يجب‬.‫العمل‬ ‫أثناء‬ ‫األخرى‬ ‫الخدمات‬ ‫خطوط‬
4.:‫الصمت‬ ‫فائق‬ ‫الصخور‬ ‫تفتيت‬ ‫عامل‬ ‫استخدام‬
a.‫الصخور‬ ‫مواقع‬ ‫في‬ ‫الحفر‬ ‫عند‬ ‫الصمت‬ ‫فائق‬ ‫الصخور‬ ‫تفتيت‬ ‫عامل‬ ‫واستخدام‬ ‫توريد‬‫و‬ ‫الرخامية‬‫شديدة‬ ‫الجيرية‬
.‫الصالبة‬
b.‫المادة‬ ‫اسم‬‫الكيميائية‬‫الكالسيوم‬ ‫هيدروكسيد‬ (Calcium Hydroxide.)
c.( ‫الكمية‬03‫م‬ / ‫كجم‬2
.)
d.‫بعمق‬ ‫بالسطح‬ ‫ثقوب‬ ‫عمل‬ :‫االستخدام‬ ‫طريقة‬033‫واالخر‬ ‫ثقب‬ ‫كل‬ ‫بين‬ ‫والمسافة‬ ‫مم‬233‫مليمتر‬‫عدد‬ ‫(أي‬
03‫م‬ ‫لكل‬ ‫ثقب‬2
).
e.‫الثقب‬ ‫قطر‬02‫مليمتر‬.
f.‫يتم‬‫الكيميائية‬ ‫بالمادة‬ ‫الثقوب‬ ‫تعبئة‬‫بالفقرة‬ ‫اسمها‬ ‫الموضح‬b‫أعاله‬.
‫الحفرية‬ ‫جوانب‬ ‫تدعيم‬
1.‫المشبعة‬ ‫أو‬ ‫لالنهيار‬ ‫القابلة‬ ‫التربة‬ ‫أو‬ ‫والرملية‬ ‫المفككة‬ ‫الطينية‬ ‫التربة‬ ‫في‬ ‫الحفرية‬ ‫جوانب‬ ‫تدعيم‬ ‫المقاول‬ ‫على‬ ‫يجب‬
.‫غيرها‬ ‫أو‬ ‫األمطار‬ ‫من‬ ‫سطحية‬ ‫لمياه‬ ‫تسرب‬ ‫وجود‬ ‫حالة‬ ‫في‬ ‫أو‬ ‫بالمياه‬‫توريد‬ ‫المقاول‬ ‫على‬ ‫يجب‬ ‫الحاالت‬ ‫هذه‬ ‫ففي‬
‫لمنع‬ ،‫الحفرية‬ ‫جوانب‬ ‫لتدعيم‬ ‫الالزمة‬ ‫الهيدروليكية‬ ‫الدعامات‬ ‫وأجهزة‬ ‫اللوحية‬ ‫الخوازيق‬ ‫أو‬ ‫الصفائح‬ ‫كافة‬ ‫وتركيب‬
‫ب‬ ‫الحفرية‬ ‫عرض‬ ‫على‬ ‫للمحافظة‬ ‫وذلك‬ ‫التربة‬ ‫تحر‬ ‫أو‬ ‫الموضعية‬ ‫االنهيارات‬‫المنشئ‬ ‫على‬ ‫يؤثر‬ ‫وأال‬ ‫االمكان‬ ‫قدر‬‫ات‬
‫كما‬ ‫المجاورة‬‫ففي‬ ،‫الجدارية‬ ‫والدعائم‬ ‫الرأسية‬ ‫الدعائم‬ :‫الهيدروليكية‬ ‫للدعامات‬ ‫نوعان‬ ‫وهنا‬ .‫الشكل‬ ‫في‬ ‫مبين‬ ‫هو‬
‫الزيت‬ ‫تفريغ‬ ‫يتم‬ ‫الدعامات‬ ‫فك‬ ‫وعند‬ ‫الزيت‬ ‫ضخ‬ ‫عند‬ ‫الحفرية‬ ‫جوانب‬ ‫على‬ ‫ضغط‬ ‫بقوة‬ ‫الدعامات‬ ‫تؤثر‬ ‫األول‬ ‫النوع‬
‫ا‬ ‫الحاالت‬ ‫في‬ ‫المتباعدة‬ ‫الرأسية‬ ‫الدعامات‬ ‫وتستخدم‬ ،‫الضغط‬ ‫قوة‬ ‫وتنخفض‬‫الواحدة‬ ‫وتركب‬ ‫الحفر‬ ‫عمليات‬ ‫من‬ ‫لعادية‬
‫األخرى‬ ‫تلوى‬.
2.‫حالة‬ ‫حسب‬ ‫متباعدة‬ ‫أو‬ ‫متصلة‬ ‫تكون‬ ‫الرأسية‬ ‫األلواح‬ ‫من‬ ‫عدد‬ ‫لتدعيم‬ ً‫ا‬‫أفقي‬ ‫تركيبها‬ ‫فيتم‬ ‫الجدارية‬ ‫الدعامات‬ ‫أما‬
‫أمتار‬ ‫خمسة‬ ‫إلى‬ ‫الجدارية‬ ‫الدعامات‬ ‫طول‬ ‫يصل‬ ‫وقد‬ ،‫التربة‬.
3.‫الم‬ ‫على‬ ‫يجب‬ ‫أمتار‬ ‫ثالثة‬ ‫الحفرية‬ ‫عمق‬ ‫تجاوز‬ ‫حال‬ ‫وفي‬‫يسمح‬ ‫وال‬ ‫التدعيم‬ ‫طريقة‬ ‫بين‬ُ‫ت‬ ‫إنشائية‬ ‫مخططات‬ ‫تقديم‬ ‫قاول‬
‫المخططات‬ ‫هذه‬ ‫على‬ ‫المهندس‬ ‫موافقة‬ ‫بعد‬ ‫إال‬ ‫الجوانب‬ ‫تدعيم‬ ‫أعمال‬ ‫في‬ ‫بالبدء‬.
4.‫و‬ ‫الردم‬ ‫أعمال‬ ‫مع‬ ‫وبالتوافق‬ ‫تدريجي‬ ‫بشكل‬ ‫التدعيم‬ ‫وسائل‬ ‫نزع‬ ‫يتم‬‫الد‬.
‫الخندق‬ ‫حفر‬ ‫متطلبات‬
1.‫يجب‬‫تدعيم‬‫جوانب‬‫الخنادق‬‫التي‬‫يزيد‬‫عمقها‬‫على‬1.5‫أو‬ ‫متر‬‫تحدر‬‫إلى‬‫زاوية‬‫االستقرار‬‫الشكل‬ ‫في‬ ‫كما‬.
2.‫يجب‬‫توفير‬‫حماية‬‫فعالة‬‫للخنادق‬‫التي‬‫يقل‬‫عمقها‬‫عن‬1.5‫في‬ ‫متر‬‫األماكن‬‫التي‬‫يتوقع‬‫حدوث‬‫تفكك‬‫لتربة‬‫فيها‬‫و‬
‫انهيار‬‫جوانب‬‫الخندق‬.
3.‫أن‬‫تكون‬‫المواد‬‫الالزمة‬‫لتدعيم‬‫الجوانب‬‫والتغطية‬‫باأللواح‬‫قوية‬‫وتمتد‬‫إلى‬‫قاع‬‫الحفرة‬.
4.‫ل‬ ‫إضافي‬ ‫تدعيم‬ ‫يستخدم‬‫ل‬‫جوانب‬‫في‬‫الخنادق‬‫التي‬‫تقع‬‫بجوار‬‫المناطق‬‫المردومة‬‫أو‬‫لالهتزازات‬ ‫المعرضة‬.
5.‫يجب‬‫حماية‬‫العمال‬‫الذين‬‫يدخلون‬‫إلى‬‫حفر‬‫القواعد‬‫أو‬‫األعمدة‬‫بتركيب‬‫إطار‬‫قوي‬‫قابل‬‫للنزع‬‫على‬‫مدى‬‫عمق‬
‫الحفرة‬‫لمقاومة‬‫تحر‬‫التربة‬‫(باستثناء‬ ‫المحيطة‬‫الحفر‬)‫الشكل‬ ‫مخروطية‬‫انقاذ‬ ‫حبل‬ ‫استخدام‬ ‫العاملين‬ ‫على‬ ‫ويجب‬
.‫الحفرة‬ ‫من‬ ‫العامل‬ ‫إلخراج‬ ‫يكفي‬ ‫بما‬ ً‫ا‬‫قوي‬
6.‫الحد‬‫األدنى‬‫لمتطلبات‬‫تدعيم‬‫الخندق‬‫ب‬‫األ‬‫مبينة‬ ‫خشاب‬‫ب‬:‫التالي‬ ‫الجدول‬
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 10 of 45
SDCS-02-17 REV.01
‫جدول‬2:.‫الحفريات‬ ‫لتدعيم‬ ‫القياسات‬
7.‫يجب‬‫أ‬( ‫عمقها‬ ‫يبلغ‬ ‫التي‬ ‫الخنادق‬ ‫في‬ ‫تستعمل‬ ‫ن‬1.2)‫متر‬‫أ‬( ‫األقل‬ ‫على‬ ‫تمتد‬ ‫ساللم‬ ‫أكثر‬ ‫و‬1.51‫سطح‬ ‫فوق‬ )‫متر‬
‫في‬ ‫الساللم‬ ‫هذه‬ ‫توضع‬ ‫ان‬ ‫ويجب‬ .‫الخندق‬‫أ‬‫يزي‬ ‫ال‬ ‫بحيث‬ ‫ماكن‬‫د‬( ‫االخر‬ ‫عن‬ ‫السلم‬ ‫بعد‬7.6)‫متر‬.
8.‫المستعرضة‬ ‫الركائز‬‫أ‬:‫يجب‬ ‫الخندق‬ ‫رافعات‬ ‫و‬
a.‫أ‬‫وضعية‬ ‫في‬ ‫توضع‬ ‫ن‬‫أ‬.‫صحيحة‬ ‫فقية‬
b.‫أ‬‫عمودية‬ ‫فراغات‬ ‫بينها‬ ‫تتر‬ ‫ن‬
c.‫أ‬‫بربطا‬ ‫(تربط‬ ‫بإحكام‬ ‫تثبت‬ ‫ن‬‫تنزلق‬ ‫ال‬ ‫بحيث‬ )‫ت‬‫أ‬.‫تسقط‬ ‫و‬
5.‫صناديق‬ ‫استخدام‬ ‫يمكن‬‫الخنادق‬‫المتنقلة‬‫أو‬‫أغطية‬‫الخنادق‬‫االن‬‫زالقية‬‫بدال‬‫من‬‫تدعيم‬‫الجوانب‬‫وعند‬ ،‫إمالتها‬ ‫أو‬
‫و‬ ‫تصمم‬ ‫ان‬ ‫يجب‬ ‫استعمالها‬‫و‬ ‫تنشا‬‫تصان‬‫بحيث‬‫توفر‬‫من‬‫الحماية‬‫الالزمة‬‫لذلك‬‫الخندق‬‫ما‬‫هو‬‫أو‬ ‫معادل‬‫أ‬‫مما‬ ‫فضل‬
‫أ‬ ‫باأللواح‬ ‫التغطية‬ ‫توفره‬‫و‬‫الجوانب‬ ‫تدعيم‬.
11.‫يجب‬‫أ‬‫الردم‬ ‫يسير‬ ‫ن‬‫و‬‫إزالة‬‫دعامات‬‫الخندق‬‫مع‬‫بعضهما‬‫و‬‫يتم‬‫العمل‬‫من‬‫قاع‬‫الخندق‬‫إلى‬‫أعلى‬‫و‬‫الرافعات‬ ‫تحرر‬
‫و‬‫األ‬.‫ببطء‬ ‫كتاف‬
‫مالحظة‬:
‫الصلبة‬ ‫الصخور‬ ‫من‬ ‫الجوانب‬ ‫تدعيم‬ ‫يلزم‬ ‫ال‬‫أ‬‫البركانية‬ ‫الصخور‬ ‫و‬‫أ‬‫الصلصال‬ ‫من‬ ‫المشكلة‬ ‫الصخور‬ ‫و‬‫أ‬‫استبدال‬ ‫يمكن‬ ‫و‬
‫الخشب‬‫بالركائز‬‫الفوال‬‫المستعرضة‬ ‫ذية‬‫والركائز‬‫ذات‬‫المقاومة‬‫حسب‬ ‫المعادلة‬‫الرغبة‬.
6.4.3 Sand Bedding/Cover and Cable Tiles
A bedding of Clean, fine sand shall be placed at the bottom of the trench. After laying
the cable, all stone and rubble that have fallen in to the trench during the cable laying
shall be removed. A cover of clean, fine sand shall be placed over the cable. The
thickness of sand bedding/cover shall be as per the relevant trench construction drawing.
The sand bedding and cover shall be spread by hand tools to maintain an even thickness.
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 11 of 45
SDCS-02-17 REV.01
‫الناع‬ ‫الرمل‬‫م‬:
‫يتم‬( ‫بسمك‬ ‫الكابل‬ ‫وحول‬ ‫أسفل‬ ‫ناعم‬ ‫رمل‬ ‫وضع‬111‫م‬‫لي‬‫م‬‫تر‬‫للمواصفات‬ ‫مطابقا‬ ‫الرمل‬ ‫ويكون‬ ‫الكابل‬ ‫وأعلى‬ ‫أسفل‬ )‫اآلتية‬:
‫مقاس‬‫حجم‬:‫المنخل‬
‫جدول‬3.‫المنخل‬ ‫مقاسات‬ :
‫بلك‬‫الحماية‬:
‫يجب‬‫حماية‬‫الكابالت‬‫المطمورة‬‫للجهود‬٣٣‫.ف‬‫و‬‫ذلك‬‫الرئيسة‬ ‫المحطات‬ ‫بين‬ ‫الربط‬ ‫عند‬‫فقط‬‫بواسطة‬‫بلك‬‫الحماية‬‫مق‬‫اس‬
51* ‫مم‬211* ‫مم‬411‫يتم‬ ‫و‬ ‫مم‬‫وضع‬‫ه‬‫فوق‬‫رمل‬‫الحماية‬.
6.4.4 Backfilling and Reinstatement
Backfilling and reinstatement of the trench shall be in accordance with the requirements
of the authority (e.g. municipality. MOC, etc.) under whose jurisdiction the area falls.
Warning tapes shall be laid in the backfill.
‫والدك‬ ‫الردم‬:
1.‫يتم‬‫وزارة‬ ‫أو‬ ‫والقروية‬ ‫البلدية‬ ‫الشئون‬ ‫وزارة‬ ‫مواصفات‬ ‫حسب‬ ‫مختارة‬ ‫بمواد‬ ‫ردمها‬ ‫المطلوب‬ ‫األماكن‬ ‫في‬ ‫الردم‬
‫و‬ ‫المواصالت‬‫اإلخالل‬ ‫عدم‬ ‫مع‬‫ه‬ ‫في‬ ‫ورد‬ ‫بما‬‫ذ‬.‫المواصفات‬ ‫ه‬
2.( ‫من‬ ‫أكثر‬ ‫بعمق‬ ‫الطبقات‬ ‫في‬611‫مليمتر‬‫سمكها‬ ‫يزيد‬ ‫ال‬ ‫بحيث‬ ‫طبقات‬ ‫علي‬ ‫الردم‬ ‫يتم‬ ،‫األساس‬ ‫تحت‬ ‫ما‬ ‫طبقة‬ ‫من‬ )
‫عن‬(311‫مليمتر‬‫أقصى‬ ‫كحد‬ )‫و‬‫و‬ ‫بالماء‬ ‫ترش‬ ‫أن‬ ‫يجب‬‫النسب‬ ‫حسب‬ ‫الحفرية‬ ‫في‬ ‫توضع‬ ‫أن‬ ‫قبل‬ ً‫ا‬‫جيد‬ ‫تخلط‬
‫للوصول‬ ‫المقررة‬‫إلى‬‫بموجب‬ ‫كثافة‬ ‫أحسن‬‫و‬ ‫المعدلة‬ ‫برمتو‬ ‫تجربة‬‫للوصول‬ ‫تهرس‬‫إلى‬( ‫نسبة‬51‫الكثافة‬ ‫من‬ ) %
‫ال‬ ‫العظمى‬ ‫الجافة‬‫المعدلة‬ ‫بركتو‬ ‫تجربة‬ ‫بموجب‬ ‫مقررة‬.
3.‫الط‬ ‫في‬‫على‬ ‫أعاله‬ ‫الطبقات‬ ‫تلي‬ ‫التي‬ ‫بقات‬( ‫من‬ ‫أقل‬ ‫عمق‬611‫مليمتر‬‫على‬ ‫فتردم‬ ‫األساس‬ ‫تحت‬ ‫من‬ )،ً‫ا‬‫أيض‬ ‫طبقات‬
‫و‬( ‫عن‬ ‫يزيد‬ ‫ال‬ ‫طبقة‬ ‫كل‬ ‫سمك‬211‫مليمتر‬‫و‬ )‫يجب‬‫و‬ ‫بالماء‬ ‫ترش‬ ‫أن‬‫حتى‬ ‫تهرس‬‫إلى‬ ‫الوصول‬(55‫من‬ ) %
‫و‬ ، ‫العظمى‬ ‫الجافة‬ ‫الكثافة‬.‫للمواصفات‬ ً‫ا‬‫طبق‬ ‫المواد‬ ‫تكون‬ ‫أن‬ ‫يجب‬
4.‫و‬ ‫الصخور‬ ‫قطع‬ ‫أو‬ ‫المكسرة‬ ‫الحصمة‬ ‫من‬ ‫متجانس‬ ‫مخلوط‬ ‫من‬ ‫تتكون‬ ‫المتدرج‬ ‫الحجري‬ ‫األساس‬ ‫تحت‬ ‫ما‬ ‫طبقة‬
‫و‬ ‫الرمل‬‫و‬ ،‫الطمي‬:‫اآلتي‬ ‫حسب‬ ‫الطبقة‬ ‫هذه‬ ‫مواد‬ ‫تدرج‬ ‫أن‬ ‫يجب‬
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 12 of 45
SDCS-02-17 REV.01
‫جدول‬4.‫المناخل‬ ‫قياسات‬ :
5.‫لوح‬ ‫توضع‬‫بأبعاد‬ ‫ات‬1111‫م‬‫يل‬‫م‬‫تر‬*611‫ميلمتر‬‫عليها‬ ‫ويكتب‬ ‫الرئيسية‬ ‫التقاطعات‬ ‫عند‬ ‫ونهايته‬ ‫الحفر‬ ‫بداية‬ ‫عند‬
‫الكت‬ ‫وتكون‬ ‫المشروع‬ ‫ورقم‬ ‫واالستشاري‬ ‫لها‬ ‫التابعة‬ ‫والجهة‬ ‫هاتفها‬ ‫ورقم‬ ‫المؤسسة‬ ‫أو‬ ‫الشركة‬ ‫اسم‬‫العربية‬ ‫باللغتين‬ ‫ابة‬
.‫واالنجليزية‬
6.‫التحكم‬ ‫أجهزة‬ ‫بدليل‬ ‫حسبما‬ ‫والحواجز‬ ‫والتحذيرية‬ ‫االرشادية‬ ‫باللوحات‬ ‫وتزويدها‬ ‫المرورية‬ ‫التحويالت‬ ‫عمل‬ ‫يجب‬
.‫المواصالت‬ ‫وزارة‬ ‫قبل‬ ‫من‬ ‫الصادر‬ ‫العمل‬ ‫بمناطق‬ ‫المرور‬ ‫في‬ ‫النظامية‬
7.‫من‬ ‫تتكون‬ ‫المتدرج‬ ‫الحصوي‬ ‫واألساس‬ ‫الحصوي‬ ‫األساس‬ ‫تحت‬ ‫ما‬ ً‫ا‬‫طبق‬‫أو‬ ‫المكسرة‬ ‫الحصمة‬ ‫من‬ ‫متجانس‬ ‫مخلوط‬
‫ت‬ ‫أن‬ ‫ينبغي‬ ‫كذلك‬ ‫والطمي‬ ‫والرمل‬ ‫الصخور‬ ‫قطع‬‫كاليفورنيا‬ ‫تحمل‬ ‫نسبة‬ ‫كون‬61‫على‬ %‫و‬ ‫األقل‬‫إ‬‫ذلك‬ ‫تحقيق‬ ‫تعذر‬ ‫ذا‬
‫ي‬ ‫بما‬ ‫للتوجيه‬ ‫المواصالت‬ ‫وزارة‬ ‫مع‬ ‫ينسق‬‫بالما‬ ‫المواد‬ ‫هذه‬ ‫ترش‬ ‫أن‬ ‫ويجب‬ ‫لزم‬‫و‬ ‫ء‬‫و‬ ً‫ا‬‫جيد‬ ‫تخلط‬‫و‬ ‫تفرش‬‫إل‬ ‫تهرس‬‫ى‬
‫درجة‬111‫ا‬ ‫من‬ %‫لكثافة‬‫قاع‬ ‫مستوى‬ ‫من‬ ‫أقل‬ ‫مستوى‬ ‫على‬ ‫منها‬ ‫مقطع‬ ‫أعلى‬ ‫سطح‬ ‫مستوى‬ ‫يكون‬ ‫و‬ ‫القصوى‬ ‫الجافة‬
‫اال‬‫و‬ ‫القديم‬ ‫سفلت‬‫على‬ ‫تفرد‬( ‫عن‬ ‫منها‬ ‫كل‬ ‫سمك‬ ‫يزيد‬ ‫ال‬ ‫طبقات‬151‫ميلمتر‬.)
8.‫الخاصة‬ ‫والمواصفات‬ ‫المواصالت‬ ‫وزارة‬ ‫مواصفات‬ ‫تطلبها‬ ‫التي‬ ‫االختبارات‬ ‫كافة‬ ‫اجراء‬ ‫المنفذ‬ ‫المقاول‬ ‫علي‬ ‫ينبغي‬
‫بالمشروع‬.‫المشرف‬ ‫المهندس‬ ‫بتعليمات‬ ‫التقيد‬ ‫وكذلك‬
5.:‫المنشآت‬ ‫حول‬ ‫الردم‬
a.‫و‬ ‫التجمع‬ ‫غرف‬ ،‫األساسات‬ ‫بها‬ ‫المقصود‬‫غ‬ ،‫الصمامات‬ ‫غرف‬ ،‫التفتيش‬‫إ‬ ... ‫الغسيل‬ ‫رف‬، ‫لخ‬‫و‬‫أن‬ ‫يجب‬
‫يكون‬‫على‬ ‫للمواصفات‬ ‫مطابق‬ ‫بمواد‬ ‫الردم‬‫الطبقة‬ ‫سمك‬ ‫يتعدى‬ ‫ال‬ ‫طبقات‬151‫مليمتر‬‫و‬‫بالماء‬ ‫ترش‬ ‫أن‬ ‫يجب‬
‫و‬ً‫ا‬‫جيد‬ ‫تخلط‬‫وت‬‫إ‬ ‫الوصول‬ ‫حتى‬ ‫هرس‬‫ل‬‫ى‬‫نسبة‬55‫النهائيتين‬ ‫الطبقتين‬ ‫وتعامل‬ ‫المقررة‬ ‫الجافة‬ ‫الكثافة‬ ‫من‬ %
‫العظمى‬ ‫الكثافة‬ ‫نسبة‬ ‫تصل‬ ‫بحيث‬ ‫الحجري‬ ‫األساس‬ ‫تحت‬ ‫ما‬ ‫طبقة‬ ‫بمثل‬‫إ‬‫ل‬‫ى‬111.%
b.‫كاليفورنيا‬ ‫تحميل‬ ‫نسبة‬ ‫تكون‬ ‫أن‬ ‫يجب‬ ‫كذلك‬61‫عل‬ %‫ى‬‫و‬ ‫األقل‬ً‫ا‬‫جيد‬ ‫وتخلط‬ ‫بالماء‬ ‫المواد‬ ‫هذه‬ ‫ترش‬ ‫أن‬ ‫يجب‬
‫و‬ ‫تفرش‬ ‫ثم‬‫تهرس‬‫إ‬‫ل‬‫ى‬‫كثافة‬ ‫درجة‬111‫المقرر‬ ‫الجافة‬ ‫الكثافة‬ ‫من‬ %‫المعدلة‬ ‫بروكتور‬ ‫تجربة‬ ‫بواسطة‬ ‫ة‬‫و‬
‫عل‬ ‫الطبقة‬ ‫هذه‬ ‫سمك‬ ‫يكون‬‫ى‬‫منها‬ ‫كل‬ ‫طبقتين‬151‫ميليمتر‬‫و‬‫حت‬ ‫وتهرس‬ ‫بالماء‬ ‫ترش‬ ‫أن‬ ‫يجب‬‫ى‬‫الوصول‬‫إلى‬
‫و‬ ‫المطلوبة‬ ‫الد‬ ‫درجة‬‫عن‬ ‫يزيد‬ ‫ال‬ ‫اللدونة‬ ‫معامل‬ ‫يكون‬ ‫أن‬ ‫يجب‬61.%
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 13 of 45
SDCS-02-17 REV.01
11.‫إ‬:‫السفلتة‬ ‫عادة‬
a.‫المتدرج‬ ‫الحجري‬ ‫األساس‬ ‫تحت‬ ‫ما‬ ‫طبقة‬ ‫جفاف‬ ‫بعد‬‫اال‬ ‫من‬ ‫بطبقة‬ ‫ترش‬ ً‫ا‬‫تمام‬ ‫الماء‬ ‫من‬‫التجمد‬ ‫المتوسط‬ ‫سفلت‬
(DCI)‫بمعدل‬(1.5‫كج‬‫م‬‫و‬ ) ‫م‬ /‫ضبطها‬ ‫بعد‬ ‫المعتمدة‬ ‫الميكانيكية‬ ‫بالرشاشات‬ ‫المادة‬ ‫هذه‬ ‫ترش‬ ‫أن‬ ‫يجب‬
‫المراد‬ ‫المنطقة‬ ‫أجزاء‬ ‫جميع‬ ‫في‬ ‫متجانس‬ ‫بشكل‬ ‫المقررة‬ ‫الكمية‬ ‫لترش‬.‫البراميل‬ ‫باستخدام‬ ‫أو‬ ‫سفلتتها‬
b.‫و‬ ‫هذا‬‫لمدة‬ ‫الطبقة‬ ‫هذه‬ ‫تتر‬24‫و‬ ‫األسفلتي‬ ‫األساس‬ ‫وضع‬ ‫عملية‬ ‫أو‬ ‫السفلتة‬ ‫عملية‬ ‫تتم‬ ‫ثم‬ ‫ساعة‬‫وضع‬ ‫قبل‬
‫عليه‬ ‫يجب‬ ‫ثم‬ ً‫ا‬‫عمودي‬ ‫بالمنشار‬ ‫القديم‬ ‫األسفلت‬ ‫لحام‬ ‫منطقة‬ ‫بقص‬ ‫المقاول‬ ‫يقوم‬ ‫أن‬ ‫يجب‬ ‫األسفلتي‬ ‫األساس‬
‫أتربة‬ ‫أو‬ ‫شوائب‬ ‫أية‬ ‫من‬ ‫الموقع‬ ‫تنظيف‬‫عل‬ ‫مترسبة‬‫ى‬‫ده‬ ‫يتم‬ ‫كذلك‬ ‫سفلتته‬ ‫المراد‬ ‫السطح‬‫األسفلت‬ ‫حواف‬ ‫ان‬
‫اال‬ ‫بمادة‬ ‫القديم‬‫سفلت‬( ‫التجمد‬ ‫سريع‬RC2‫من‬ ً‫ا‬‫جيد‬ ‫تنظيفها‬ ‫بعد‬ ‫وكذلك‬ )‫األساس‬ ‫طبقة‬ ‫فرد‬ ‫يتم‬ ‫األتربة‬
‫اال‬‫الوصول‬ ‫ليتم‬ ‫المناسب‬ ‫بالسمك‬ ‫سفلتي‬‫إ‬‫ل‬‫ى‬‫و‬ ‫الهرس‬ ‫بعد‬ ‫المطلوبة‬ ‫الطبقة‬ ‫سمك‬‫هذه‬ ‫مواد‬ ‫تخضع‬ ‫أن‬ ‫يجب‬
‫للتد‬ ‫الطبقة‬:‫التالي‬ ‫رج‬
‫جدول‬5.‫التدرج‬ :
11.‫اال‬ ‫نسبة‬ ‫تكون‬( ‫سفلت‬4-7‫عل‬ ‫وتكون‬ ‫الترنشات‬ ‫لحفريات‬ ‫بالنسبة‬ )%‫ى‬‫طبقتين‬‫و‬‫عل‬ ‫طبقة‬ ‫كل‬ ‫تفرد‬‫ى‬‫و‬ ‫حدة‬‫يجب‬
‫رش‬‫اال‬ ‫الطبقة‬( ‫التجمد‬ ‫سريع‬ ‫الربط‬ ‫بمادة‬ ‫سفلتية‬RC2‫بمع‬ ‫وذلك‬ )( ‫دل‬2:1‫حتى‬ ‫الهرس‬ ‫ويجب‬ ) ‫م‬ /‫كجم‬‫الوصول‬
‫إلى‬55‫عند‬ ‫المستخدم‬ ‫بواسطة‬ ‫العظمى‬ ‫الكثافة‬ ‫من‬ %135‫مئوية‬ ‫درجة‬‫على‬‫عن‬ ‫تزيد‬ ‫أال‬162‫أثناء‬ ‫مئوية‬ ‫درجة‬
.‫الفرد‬
12.‫عن‬ ‫تقل‬ ‫ال‬ ‫لمدة‬ ‫الطريق‬ ‫يغلق‬24ً‫ا‬‫بات‬ ً‫ا‬‫منع‬ ‫يمنع‬ ،‫ذلك‬ ‫قبل‬ ‫عليه‬ ‫بالمرور‬ ‫يسمح‬ ‫وال‬ ‫النهائية‬ ‫الطبقة‬ ‫وضع‬ ‫بعد‬ ‫ساعة‬
‫أحجام‬ ‫ذات‬ ‫فرادات‬ ‫األسفلت‬ ‫فرد‬ ‫في‬ ‫العمال‬ ‫استعمال‬‫الترنشات‬ ‫لسفلتة‬ ‫صغيرة‬‫األسواق‬ ‫في‬ ‫توفرت‬ ‫حيث‬‫عرض‬ ‫من‬
411‫ميليمتر‬‫بطريقة‬ ‫الحديث‬ ‫مع‬ ‫القديم‬ ‫األسفلت‬ ‫مع‬ ‫واحد‬ ‫منسوب‬ ‫ذو‬ ‫متجانس‬ ‫سطح‬ ‫علي‬ ‫للحصول‬ ‫وذلك‬ ‫فوق‬ ‫فما‬
‫حت‬ ‫عمودي‬ ‫وبشكل‬ ‫الحفر‬ ‫جوانب‬ ‫بقص‬ ‫األسفلت‬ ‫وضع‬ ‫قبل‬ ً‫ا‬‫تام‬ ً‫ا‬‫التزام‬ ‫المقاول‬ ‫يلتزم‬ ‫للتواصل‬ ‫بالنسبة‬ ‫أما‬ ، ‫سليمة‬‫ى‬
‫ينكش‬‫أي‬ ‫من‬ ‫الجوانب‬ ‫وتنظيف‬ ‫السفلتة‬ ‫من‬ ‫متتابعين‬ ‫يومين‬ ‫عمل‬ ‫بين‬ ‫الحفر‬ ‫جوانب‬ ‫قص‬ ً‫ا‬‫أيض‬ ‫وكذلك‬ ‫جديد‬ ‫سطح‬ ‫ف‬
‫عل‬ ‫يجب‬ ‫وكذلك‬ ‫الميكانيكية‬ ‫المعدات‬ ‫استعمال‬ ‫مع‬ ‫سائبة‬ ‫مواد‬‫ى‬‫أن‬ ً‫ا‬‫أيض‬ ‫المقاول‬‫بمادة‬ ‫الفواصل‬ ‫هذه‬ ‫بدهان‬ ‫يقوم‬
‫اال‬( ‫التجمد‬ ‫السريع‬ ‫سفلت‬RC2‫و‬ )‫حت‬ ‫ذلك‬‫اال‬ ‫بين‬ ‫الترابط‬ ‫يتم‬ ‫ى‬‫سفلت‬.‫والجديد‬ ‫القديم‬
13.‫إ‬:‫األرصفة‬ ‫عادة‬‫حيث‬‫في‬ ‫أو‬ ‫البالط‬ ‫في‬ ‫كان‬ ‫سواء‬ ‫ينتج‬ ‫األرصفة‬ ‫في‬ ‫خلل‬ ‫أي‬ ‫بإصالح‬ ‫يقوم‬ ‫بأن‬ ‫المقاول‬ ‫يلتزم‬
‫و‬ ‫التالية‬ ‫األجزاء‬ ‫ازالة‬ ‫يتم‬ ‫حيث‬ ‫البردورات‬‫إلى‬ ‫وضعها‬ ‫إعادة‬‫االلتزام‬ ‫وكذلك‬ ‫عليها‬ ‫كانت‬ ‫التي‬ ‫الطبيعية‬ ‫حالتها‬
‫ف‬ ‫خاصة‬ ‫بمواد‬ ‫المرصوفة‬ ‫المناطق‬ ‫بإعادة‬‫الطبيعة‬ ‫علي‬ ‫الموجودة‬ ‫المواد‬ ‫نوعية‬ ‫بنفس‬ ‫غيرها‬ ‫أو‬ ‫البلد‬ ‫وسط‬ ‫منطقة‬ ‫ي‬
‫وعل‬‫ى‬.‫تنتج‬ ‫أضرار‬ ‫أي‬ ‫ويتحمل‬ ‫الزرع‬ ‫وأحواض‬ ‫والمزروعات‬ ‫األشجار‬ ‫علي‬ ‫المحافظة‬ ً‫ا‬‫أيض‬ ‫المقاول‬
14.‫إ‬‫الموق‬ ‫عادة‬‫إلى‬ ‫ع‬‫الطبيعي‬ ‫حالته‬:‫ة‬
‫عل‬‫ى‬‫القطط‬ ‫وعيون‬ ‫الدهانات‬ ‫ذلك‬ ‫في‬ ‫بما‬ ‫العمل‬ ‫بدء‬ ‫قبل‬ ‫عليها‬ ‫كان‬ ‫التي‬ ‫الطبيعية‬ ‫حالته‬ ‫الي‬ ‫الطريق‬ ‫اعادة‬ ‫المقاول‬
‫الميكانيكية‬ ‫المعدات‬ ‫باستخدام‬ ‫وذلك‬ ‫والمخلفات‬ ‫األتربة‬ ‫جميع‬ ‫من‬ ً‫ا‬‫جيد‬ ‫الموقع‬ ‫بتنظيف‬ ‫المقاول‬ ‫ويلتزم‬ ‫وخالفه‬
‫ال‬ ‫التصريح‬ ‫مدة‬ ‫خالل‬ ً‫ا‬‫نظيف‬ ‫الشارع‬ ‫يكون‬ ‫بحيث‬ ‫المعتمدة‬.‫له‬ ‫ممنوح‬
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 14 of 45
SDCS-02-17 REV.01
6.4.5 Concrete:
:‫كاآلتي‬ ‫الواحد‬ ‫المكعب‬ ‫للمتر‬ ‫الخرسانة‬ ‫خلطات‬ ‫تتكون‬
1.( ‫العادية‬ ‫الخرسانة‬811‫م‬‫ليمتر‬2
‫بحص‬‫ى‬،‫متدرج‬411‫م‬‫ليمتر‬2
،‫نظيف‬ ‫رمل‬251‫أسمنت‬ ‫كجم‬.)
2.( ‫المسلحة‬ ‫الخرسانة‬811‫م‬‫ليمتر‬2
‫بحصى‬،‫متدرج‬411‫م‬‫ليمتر‬2
،‫نظيف‬ ‫رمل‬351‫أسمنت‬ ‫كجم‬.)
3.‫الحص‬ ‫من‬ ‫عينات‬ ‫تقديم‬‫ى‬‫و‬.‫المشرف‬ ‫المهندس‬ ‫قبل‬ ‫من‬ ‫لالعتماد‬ ‫الرمل‬
1. All concrete surfaces in contact with ground shall be provided with two (2) layers of
polyethylene vapor barrier / Each layer shall be six (6) Mil Thickness and in
Accordance with ASTM-2103.
2. Concreting shall not be allowed without vibration at any time.
3. Curing of concrete shall be done by gunny bags for curing compound.
4. Cement shall be type 1 and in areas having water logging and salinity, Sulphate
resistant cement type 5 may be used. SEC Engineer shall direct to the type of
cement to be used.
5. Water shall be free from silt, organic matter, alkalies or other impurities.
6. The average grain size of sand is 0.35mm and the mud content shall not be more
than 5%.
7. Forms to be used, these shall be sufficiently tight to prevent loss of mortar from
concrete and shall be maintained rigidly in position until concrete has hardened
enough to prevent damage by the removal.
8. If required by SEC Engineer, the concrete foundation sample test of Pole and anchor
shall be carried out. The concrete sample to be crushed after seven days.
9. All lean concrete under reinforced base to be premixed from factory with 250 kg
cement/m2
of concrete minimum strength 14 N/mm2
.
10. Lean concrete 15 cm thick shall be used all around the 15 Cm Dia P.V.C Pipes
running underground.
11. All R.C.C to be premixed from factory with 350 kg cement/m2
of concrete minimum
strength 21 N/mm2
(3000 P.S.I).
12. Sand should be coarse grained, clean and free from all foreign matter.
13. Aggregate should be well graded (19mm Max size), clean and free from all foreign
matter.
14. All steel reinforcing bar to be high yield deformed type conforming to metric BS
444.9 Min yield strength 410 N/mm2
.
15. Reinforcement covers with in concrete to be as follows: Roof Slab 20 mm, Footing
60mm, others 40 mm.
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 15 of 45
SDCS-02-17 REV.01
7 SOIL CLASSIFICATION:
The soils are classified according to the A. B. Chance test probe method. The chance test
probe is a mechanical tool to identify soil in a simple and quick way from the earth
surface without core samples. To find out the soil bearing capacity the soil test probe is
screwed into the soil. As it displaces the soil, probe torque readings are measured in
inch-pounds on a torque gauge. The torque values obtained are translated into soil
classification using the chance Soil Classification Data chart. The table below shows the
soil classification as per A.
B. Chance method and the relevant SEC soil classification to be followed.
Class Description of Soil Type
Probe Values Ibs
(N-m)
SEC Soil
Type
Classification
0 Sound hard rock, un-weathered N. A.
Rock / Dense
Soil
1
Very dense and / or cemented sands coarse
gravel and cobbles
750-1600
(90-208)
2
Dense fine sand, very hard silts and clays
(may be preloaded)
600-750
(78-98)
3
Dense clays, sands and gravel, hard silts
and clays
500-600
(65-78)
4
Medium dense coarse sandy gravel, very
stiff to had silts and clays
400-500
(52-65) Medium
Soil
5
Medium dense coarse sand & sandy
gravels, stiff to very stiff silts and clays
300-400
(39-52)
6
Loose to medium dense fine to coarse
sand, firm to stiff clays & silt
200-300
(26-39) Loose
Soil
7
Loose fine sand, alluvium, loess, soft firm
clays, varied clays, fill
100-200
(13-26)
Table 6: BREAKING CAPACITY OF SOIL IS 1.5 KG/CM2
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 16 of 45
SDCS-02-17 REV.01
8 SOIL AND ASPHAILT TEST
1.6‫االسفلت‬ ‫قص‬
‫و‬ ‫بالمنشار‬ ‫القص‬ ‫يكون‬ ‫أن‬ ‫يجب‬‫و‬ ‫تامة‬ ‫باستقامة‬‫عن‬ ‫يقل‬ ‫ال‬ ‫بعرض‬1‫و‬ ‫القطعيات‬ ‫في‬ ‫متر‬‫و‬ ‫الرئيسية‬ ‫الشوارع‬‫يتم‬
‫بطول‬ ‫اإلسفلت‬ ‫من‬ ‫المتهتكة‬ ‫األجزاء‬ ‫قص‬5‫و‬ ‫متر‬‫قطعتين‬ ‫بين‬ ‫المسافة‬ ‫كانت‬ ‫إذا‬‫أ‬‫من‬ ‫قل‬5‫ف‬ ‫متر‬‫إ‬‫الجزء‬ ‫إزالة‬ ‫يتم‬ ‫نه‬
‫الفاصل‬.‫بينهما‬
‫و‬‫يستثن‬‫ى‬‫يكون‬ ‫أو‬ ‫مترين‬ ‫عن‬ ‫فيها‬ ‫الجدار‬ ‫عن‬ ‫الحفر‬ ‫بعد‬ ‫يقل‬ ‫التي‬ ‫الفرعية‬ ‫الشوارع‬ ‫في‬ ‫للعمل‬ ‫متر‬ ‫بعرض‬ ‫القص‬ ‫من‬
‫ال‬ ‫بعد‬‫المواطن‬ ‫رصيف‬ ‫عن‬ ‫حفر‬‫أ‬.‫متر‬ ‫من‬ ‫قل‬
1.6‫الترابية‬ ‫األعمال‬
8.2.1‫الترابية‬ ‫المواقع‬ ‫جاهزية‬
‫التي‬ ‫المواد‬ ‫جودة‬ ‫من‬ ‫التأكد‬ ‫خالل‬ ‫من‬ ‫الموقع‬ ‫جاهزية‬ ‫تحديد‬ ‫يمكن‬‫من‬ ‫خلوها‬ ‫من‬ ‫بالتأكد‬ ‫العمل‬ ‫لتنفيذ‬ ‫المقاول‬ ‫يستخدمها‬
‫عن‬ ‫قطرها‬ ‫يزيد‬ ‫التي‬ ‫الكبيرة‬ ‫واألحجار‬ ‫الصخور‬5‫و‬ ‫سم‬‫و‬ ‫المخلفات‬ ‫من‬ ‫خلوها‬‫و‬ ‫العضوية‬ ‫المواد‬‫و‬ ‫األعشاب‬‫و‬ ‫الجذور‬
‫و‬ ‫األشجار‬ ‫مخلفات‬‫و‬ ‫التدرج‬ ‫حيث‬ ‫من‬ ‫المطلوبة‬ ‫األمانة‬ ‫لمواصفات‬ ‫مطابقتها‬ ‫من‬ ‫بالتأكد‬ ‫كذلك‬‫و‬ ‫التصنيف‬‫الجودة‬‫و‬‫قابلية‬
‫التماسك‬‫لالختب‬ ً‫ا‬‫جاهز‬ ‫الموقع‬ ‫ويعتبر‬‫التالي‬ ‫من‬ ‫التأكد‬ ‫بعد‬ ‫ار‬:
a..‫المستخدمة‬ ‫المواد‬ ‫جودة‬
b..‫دكها‬ ‫المراد‬ ‫للطبقة‬ ‫الرصاصة‬ ‫وصول‬ ‫تمنع‬ ‫تكهفات‬ ‫وجود‬ ‫عدم‬
c.( ‫الطبقة‬ ‫سماكة‬‫إنه‬‫المواصفات‬ ‫حسب‬ ‫للسماكات‬ ‫مطابقة‬ ‫ا‬.)
d..‫الطبقة‬ ‫استواء‬
e..‫الترابية‬ ‫الطبقة‬ ‫سماكة‬ ‫من‬ ‫التأكد‬
f.‫وجود‬ ‫عدم‬.‫مفككة‬ ‫تربة‬
g.‫وجود‬ ‫عدم‬.‫حبيبي‬ ‫انفصال‬
h..‫المخلفات‬ ‫من‬ ‫الموقع‬ ‫نظافة‬
i..‫الحفرية‬ ‫أجزاء‬ ‫جميع‬ ‫د‬
8.2.2‫المواد‬ ‫جودة‬ ‫اختبارات‬ ‫تكرار‬ ‫معدل‬‫الترابية‬
‫ع‬ ‫يقل‬ ‫ال‬ ‫أن‬ ‫يجب‬‫ا‬ ‫لى‬‫لمواد‬)‫(تشوين‬ ‫تخزين‬ ‫وجود‬ ‫أو‬ ‫للمواد‬ ‫واحد‬ ‫مصدر‬ ‫استخدام‬ ‫عند‬ ‫أسبوعين‬ ‫لكل‬ ‫واحدة‬ ‫عينة‬ ‫عن‬
‫ف‬ ‫للتآكل‬ ‫انجلوس‬ ‫لوس‬ ‫واختبار‬ ‫التحمل‬ ‫لنسبة‬ ‫كاليفورنيا‬ ‫حالة‬ ‫في‬ ‫أما‬ ,‫المواد‬ ‫وتصنيف‬ ‫التدرج‬ ‫اختبار‬ ‫حالة‬ ‫في‬ ‫كافي‬‫إ‬‫يتم‬ ‫نه‬
‫ع‬‫األكثر‬ ‫(على‬ ‫شهر‬ ‫كل‬ ‫االختبار‬ ‫مل‬‫و‬ )‫أخ‬ ‫يتم‬‫الحاالت‬ ‫في‬ ‫واحدة‬ ‫عينة‬ ‫ذ‬‫التالية‬:
a.. ‫المواد‬ ‫مصدر‬ ‫تغير‬ ‫كلما‬
b.‫أو‬ ‫الخواص‬ ‫أو‬ ‫اللون‬ ‫كتغير‬ ‫المواد‬ ‫مصدر‬ ‫تغير‬ ‫على‬ ‫دالئل‬ ‫ظهرت‬ ‫كلما‬.‫النسيج‬
c.( ‫خمسمائة‬ ‫عن‬ ‫العمل‬ ‫كمية‬ ‫زادت‬ ‫كلما‬511.‫المستمرة‬ ‫األعمال‬ ‫من‬ ‫مكعب‬ ‫متر‬ )
8.2.3‫لألعمال‬ ) ‫الدك‬ ( ‫التنفيذ‬ ‫جودة‬ ‫تكرار‬ ‫معدل‬‫الترابية‬
‫للكثافة‬ ‫االختبارات‬ ‫عدد‬ ‫تحديد‬ ‫يمكن‬: ‫التالية‬ ‫للقواعد‬ ‫وفقا‬ ‫إجراؤها‬ ‫الواجب‬ ‫الحلقية‬
a.‫إ‬‫لكل‬ ‫واحد‬ ‫اختبار‬ ‫جراء‬151‫وجود‬ ‫عند‬ ‫أو‬ ‫الحفر‬ ‫اتجاهات‬ ‫من‬ ‫اتجاه‬ ‫لكل‬ ‫المتصلة‬ ‫األعمال‬ ‫من‬ ‫طبقة‬ ‫لكل‬ ‫متر‬
‫تغير‬‫الحفر‬ ‫اتجاه‬ ‫(تغير‬ ‫بالحفر‬ ‫واحد‬.)
b.‫العمل‬ ‫كان‬ ‫إذا‬‫أ‬‫من‬ ‫طوال‬ ‫قل‬151‫االتجاه‬ ‫في‬ ‫واحد‬ ‫تغير‬ ‫من‬ ‫أكثر‬ ‫هنا‬ ‫كان‬ ‫أو‬ ‫متر‬‫ف‬‫إن‬‫واحد‬ ‫اختبار‬ ‫عمل‬ ‫يتم‬ ‫ه‬
.‫اتجاه‬ ‫لكل‬ ‫طبقة‬ ‫لكل‬ ‫موقع‬ ‫لكل‬
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 17 of 45
SDCS-02-17 REV.01
8.2.4( ‫الردم‬ ‫طبقات‬ ‫الجودة‬ ‫متطلبات‬Back Filling)
‫الخاصية‬‫المتطلبات‬‫المواصفة‬
‫التربة‬ ‫تصنيف‬A-1-a or A-1-b or A-2-4(AASHTO–M145)
‫نسبة‬‫الد‬-( ‫العظمى‬ ‫الجافة‬ ‫الكثافة‬‫ادنى‬ ‫حد‬))%(55(AASHTO–T180-74)
‫تحمل‬ ‫نسبة‬‫كاليفورنيا‬(‫ادنى‬ ‫حد‬))%(51(AASHTO–D1883)
( ‫الرملي‬ ‫المكافئ‬‫حد‬‫أ‬‫دنى‬)25(AASHTO–176-73)
( ‫اللدونة‬ ‫دليل‬‫حد‬‫أ‬‫قصى‬)6(AASHTO–T90-80)
)‫انجلوس‬ ‫(لوس‬ ‫التأكل‬ ‫بسبب‬ ‫النقص‬‫حد‬‫أ‬)%( ‫قصى‬51(AASHTO–D1883)
‫جدول‬7Back Filling:
8.2.5‫الركامية‬ ‫األساس‬ ‫تحت‬ ‫ما‬ ‫لطبقة‬ ‫الجودة‬ ‫متطلبات‬(Sub Base)
‫الخاصية‬‫المتطلبات‬‫المواصفة‬
( ‫الطبقة‬ ‫سماكة‬‫حد‬)‫أدنى‬15+ ‫سم‬15‫سم‬
‫التربة‬ ‫تصنيف‬A-1-a or A-1-b
( ‫السيولة‬ ‫حد‬‫حد‬)‫أقصى‬25(ASTM –D4318)
‫اللدونة‬ ‫دليل‬)‫أقصى‬ ‫(حد‬6(AASHTO –T90-80)
‫التأكل‬ ‫نسبة‬)‫أقصى‬ ‫(حد‬51(AASHTO –T96-77)
‫الرملي‬ ‫المكافئ‬)‫أدنى‬ ‫(حد‬25(AASHTO –176-73)
‫تحمل‬ ‫نسبة‬‫كاليفورنيا‬)‫أدنى‬ ‫(حد‬)%(65(AASHTO –D1883)
‫ال‬ ‫نسبة‬)%( ‫المثالية‬ ‫الرطوبة‬ ‫نسبة‬ ‫من‬ ‫رطوبة‬±2
)%( ‫المعدلة‬ ‫بروكتر‬ ‫بموجد‬ ‫القصوى‬ ‫الجافة‬ ‫الكثافة‬ ‫من‬ ‫الد‬ ‫نسبة‬111(AASHTO –T180-74)
‫جدول‬8:Sub Base
8.2.6) ‫السريعة‬ ‫(الطرق‬ ‫الركامي‬ ‫األساس‬ ‫لطبقة‬ ‫الجودة‬ ‫متطلبات‬Aggregate Base Course
‫الخاصية‬‫المتطلبات‬‫المواصفة‬
‫تحمل‬ ‫نسبة‬‫كاليفورنيا‬)%( ‫ادنى‬ ‫حد‬ ,81(AASHTO –D1883)
‫اقصى‬ ‫حد‬ )‫(االصالة‬ , ‫والنقص‬ ‫الصوديوم‬ ‫كبريتات‬ ‫سالمة‬12
‫التأكل‬ ‫بسبب‬ ‫النقص‬(‫حد‬‫أ‬‫قصى‬)45(AASHTO –T96-77)
‫السيولة‬ ‫حد‬(‫حد‬‫أ‬‫قصى‬)25(AASHTO –T89-80)
‫اللدونة‬ ‫دليل‬(‫حد‬‫أ‬‫قصى‬)6(AASHTO –T90-80)
)%( ‫المعدلة‬ ‫بروكتر‬ ‫بموجد‬ ‫القصوى‬ ‫الجافة‬ ‫الكثافة‬ ‫من‬ ‫الد‬ ‫نسبة‬111(AASHTO–T180-74)
‫جدول‬5:Aggregate Base Course
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 18 of 45
SDCS-02-17 REV.01
1.6‫اال‬ ‫األعمال‬‫سفلتية‬
8.3.1‫جاهزية‬ ‫تحديد‬‫لالختبارات‬ ‫اإلسفلتية‬ ‫األعمال‬
:‫التالية‬ ‫النقاط‬ ‫لجميع‬ ‫لإلسفلت‬ ‫البصري‬ ‫الفحص‬ ‫خالل‬ ‫من‬ ‫التحقق‬ ‫بعد‬ ‫اإلسفلت‬ ‫الختبارات‬ ‫الموقع‬ ‫جاهزية‬ ‫تحديد‬ ‫يمكن‬
a..‫اختبارها‬ ‫المراد‬ ‫للطبقة‬ ‫السفلتة‬ ‫عمل‬ ‫من‬ ‫واالنتهاء‬ ‫اإلسفلت‬ ‫قص‬ ‫استقامة‬
b..‫تماما‬ ‫بالجديد‬ ‫القديم‬ ‫اإلسفلت‬ ‫منسوب‬ ‫تساوي‬
c.‫اإل‬ ‫ربط‬ ‫جودة‬.‫بالجديد‬ ‫القديم‬ ‫سفلت‬
d..) ‫حصوي‬ ‫تجمع‬ ( ‫اإلسفلت‬ ‫في‬ ‫خشونة‬ ‫وجود‬ ‫عدم‬
e..‫باإلسفلت‬ ‫نعومة‬ ‫وجود‬ ‫عدم‬
f..‫والمظهر‬ ‫الشكل‬ ‫حيث‬ ‫من‬ ‫العام‬ ‫اإلسفلت‬ ‫مستوى‬ ‫جودة‬
g..‫المعدات‬ ‫بسبب‬ ‫اإلسفلت‬ ‫في‬ ‫انكسارات‬ ‫أو‬ ‫خدوش‬ ‫وجود‬ ‫عدم‬
h.‫هبوط‬ ‫وجود‬ ‫عدم‬.‫التنفيذ‬ ‫بسبب‬ ‫اإلسفلت‬ ‫بجانب‬ ‫قص‬ ‫أو‬
i.‫حيث‬ :‫كالتالي‬ ‫اإلسفلت‬ ‫سماكة‬ ‫من‬ ‫التأكد‬‫القديم‬ ‫اإلسفلت‬ ‫يكون‬ ‫أن‬ ‫حالة‬ ‫وفي‬ ‫القديم‬ ‫اإلسفلت‬ ‫لسماكة‬ ‫مساوي‬ ‫يكون‬
‫من‬ ‫اقل‬6‫أو‬ ‫الفرعية‬ ‫للشوارع‬ ‫سم‬8‫بـ‬ ‫يكتفي‬ ‫فانه‬ ‫الرئيسية‬ ‫للشوارع‬ ‫سم‬6‫و‬ ‫الفرعية‬ ‫للشوارع‬ ‫سم‬8‫سم‬
‫من‬ ‫أكثر‬ ‫القديم‬ ‫اإلسفلت‬ ‫سماكة‬ ‫كانت‬ ‫إذا‬ ‫أما‬ ،‫الرئيسية‬ ‫للشوارع‬15‫بسماكة‬ ‫إسفلت‬ ‫طبقة‬ ‫بوضع‬ ‫فيكتفى‬ ‫سم‬15‫سم‬
‫عن‬ ‫تزيد‬ ‫ال‬ ‫بسماكة‬ ‫طبقات‬ ‫على‬ ‫اإلسفلت‬ ‫وضع‬ ‫ويتم‬ ،‫فقط‬6‫بنفس‬ ‫السفلتة‬ ‫عملية‬ ‫تتم‬ ‫أن‬ ‫ويجب‬ ،‫طبقة‬ ‫لكل‬ ‫سم‬
‫الـ‬ ‫من‬ ‫الصقة‬ ‫بطبقة‬ ‫السطح‬ ‫رش‬ ‫فيجب‬ ‫اليوم‬ ‫بنفس‬ ‫الطبقات‬ ‫تنفذ‬ ‫لم‬ ‫إذا‬ ‫أما‬ ،‫اليوم‬RC2.
8.3.2‫اإلسفلتية‬ ‫المواد‬ ‫جودة‬ ‫اختبار‬ ‫معدل‬
‫اخ‬ ‫يجب‬‫الخلطة‬ ‫حرارة‬ ‫درجة‬ ‫من‬ ‫والتأكد‬ ‫الخلطات‬ ‫أنواع‬ ‫من‬ ‫نوع‬ ‫لكل‬ ‫خالطة‬ ‫لكل‬ ‫مقاول‬ ‫لكل‬ ‫عمل‬ ‫يوم‬ ‫لكل‬ ‫عينة‬ ‫ذ‬
( ‫الحرارة‬ ‫درجة‬ ‫تكون‬ ‫بحيث‬ ‫الموقع‬ ‫في‬ ‫االسفلتية‬135-163.‫مئوية‬ ‫درجة‬ )
8.3.3‫اإلسفلت‬ ‫دك‬ ‫نسبة‬ ‫اختبار‬ ‫تكرار‬
‫ي‬‫كالتالي‬ ‫الد‬ ‫نسبة‬ ‫اختبار‬ ‫عمل‬ ‫تم‬:
a.‫في‬ ‫الحفرية‬ ‫كانت‬ ‫إذا‬‫اتجاه‬‫لكل‬ ‫واحد‬ ‫اختبار‬ ‫عمل‬ ‫يتم‬ ‫واحد‬311‫طبقة‬ ‫لكل‬ ‫اليومي‬ ‫العمل‬ ‫من‬ ‫أقل‬ ‫أو‬ ‫طولي‬ ‫متر‬
.‫متصلة‬
b.‫طبقة‬ ‫لكل‬ ‫واحد‬ ‫اختبار‬ ‫اجراء‬ ‫فيجب‬ ) ‫االتجاهات‬ ‫في‬ ‫واحد‬ ‫تغير‬ ‫من‬ ‫أكثر‬ ( ‫االتجاهات‬ ‫متغيرة‬ ‫الحفرية‬ ‫كانت‬ ‫إذا‬
‫لكل‬ ‫الحفرية‬ ‫مسار‬ ‫اتجاهات‬ ‫من‬ ‫اتجاه‬ ‫كل‬ ‫في‬311‫نفس‬ ‫في‬ ‫متصل‬ ‫عمل‬ ‫لكل‬ ‫فأقل‬ ‫متر‬‫اختبار‬ ‫عمل‬ ‫أو‬ ‫اليوم‬
.‫التصريح‬ ‫نطاق‬ ‫ضمن‬ ‫منفصل‬ ‫جزء‬ ‫لكل‬ ‫واحد‬
c.‫الحي‬ ‫ولنفس‬ ‫اليوم‬ ‫نفس‬ ‫في‬ ‫تعمل‬ ‫والتي‬ ‫المشتركين‬ ‫وصالت‬ ‫من‬ ‫مواقع‬ ‫خمس‬ ‫عدد‬ ‫لكل‬ ‫واحد‬ ‫اختبار‬ ‫عمل‬ ‫يتم‬
.‫واحدة‬ ‫خالطة‬ ‫ومن‬ ‫الخلطة‬ ‫نوع‬ ‫ومن‬
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 19 of 45
SDCS-02-17 REV.01
8.3.4‫االختبارات‬ ‫تكرار‬ ‫معدل‬
‫جود‬ ‫متطلبات‬‫ة‬‫االسفلت‬:
‫الخاصية‬‫تدرج‬3‫تدرج‬2‫تدرج‬1
)‫(كجم‬ ‫أدنى‬ ‫حد‬ ‫الثبات‬111111111111
( ‫االنسياب‬‫مليمتر‬)2-42-42-4
‫ال‬‫أنجلوس‬ ‫(لوس‬ ‫للركام‬ ‫بالتأكل‬ ‫نقص‬)(%)‫عن‬ ‫يزيد‬ ‫ال‬35‫شتو‬ً‫ا‬ ‫مواصفة‬ (T-96-77)
)%( ‫الخلطة‬ ‫في‬ ‫الفراغات‬ ‫نسبة‬3-54-64-6
)%( ‫باإلسفلت‬ ‫المملوءة‬ ‫الفراغات‬ ‫نسبة‬‫الحجم‬ ‫حسب‬ ‫على‬ ‫تختلف‬‫للركام‬ ‫االسمي‬ ‫األقصى‬
( ‫االسفلت‬ ‫نسبة‬71/61‫بالوزن‬ )(%)4-64-64-6
‫حرارة‬ ‫بدرجة‬ ‫الثبات‬ ‫فقدان‬ ‫نسبة‬61)%( ‫مئوية‬ ‫درجة‬‫عن‬ ‫تزيد‬ ‫ال‬25
)%( ‫الد‬ ‫نسبة‬53–56‫العظمى‬ ‫الكثافة‬ ‫من‬Gmm
)%( ‫الركامية‬ ‫للمواد‬ ‫الرملي‬ ‫المكافئ‬‫عن‬ ‫يقل‬ ‫ال‬61‫شتو‬ً‫ا‬ ‫(مواصفة‬T-176)
‫جدول‬11‫السطحية‬ ‫االسفلت‬ ‫لطبقة‬ ‫الجودة‬ ‫متطلبات‬ :.
‫و‬ ‫قطر‬‫المنخل‬ ‫رقم‬
% ‫المارة‬ ‫المئوية‬ ‫النسبة‬
‫ج‬ ‫صنف‬
‫التدرج‬(53,12‫مل‬‫ي‬‫م‬)‫تر‬‫الحد‬
‫األ‬‫اإل‬ ‫قصى‬‫سمي‬
‫ب‬ ‫صنف‬
‫التدرج‬2(15‫مل‬‫ي‬‫م‬)‫تر‬‫الحد‬
‫األ‬‫اإل‬ ‫قصى‬‫سمي‬
‫ج‬ ‫صنف‬
‫التدرج‬1(15‫مل‬‫ي‬‫م‬)‫تر‬
‫األ‬ ‫الحد‬‫اإل‬ ‫قصى‬‫سمي‬
15‫مليمتر‬(3/4)‫انش‬-111111
12.5‫مليمتر‬(1/2)‫انش‬11151-11175–51
5.5‫مليمتر‬(3/8)‫انش‬51-11178-8364–75
4.75‫مليمتر‬‫(رقم‬4)54-6846–6141–56
2‫مليمتر‬‫(رقم‬11)32–4631–4223–37
1.425‫مليمتر‬‫(رقم‬41)14–2514–257–21
1.18‫مليمتر‬‫(رقم‬81)8–168–165–13
1.175‫مليمتر‬‫(رقم‬211)3-73-73–8
‫جدول‬11.‫السطحية‬ ‫االسفلت‬ ‫لطبقة‬ ‫التدرجة‬ ‫متطلبات‬ :
‫الخاصية‬‫تدرج‬3‫تدرج‬2‫تدرج‬1
)‫(كجم‬ ‫أدنى‬ ‫حد‬ ‫الثبات‬111111111111
)‫(مم‬ ‫االنسياب‬2-42-4
) ‫أنجلوس‬ ‫لوس‬ ( ‫للركام‬ ‫بالتأكل‬ ‫النقص‬(%)‫عن‬ ‫يزيد‬ ‫ال‬35‫شتو‬ً‫ا‬ ‫مواصفة‬ (T-96-77)
)%( ‫الخلطة‬ ‫في‬ ‫الفراغات‬ ‫نسبة‬5-75-75-7
)%( ‫باألسفلت‬ ‫المملوءة‬ ‫الفراغات‬ ‫نسبة‬‫وتتراوح‬ ‫للركام‬ ‫االسمي‬ ‫األقصى‬ ‫الحجم‬ ‫حسب‬ ‫على‬ ‫تختلف‬
( ‫بين‬61-75)%
( ‫االسفلت‬ ‫نسبة‬71/61‫بالوزن‬ )(%)3-63-63-6
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 20 of 45
SDCS-02-17 REV.01
‫الثبات‬ ‫فقدان‬ ‫نسبة‬‫حرارة‬ ‫بدرجة‬61)%( ‫مئوية‬ ‫درجة‬‫عن‬ ‫تزيد‬ ‫ال‬25
)%( ‫الد‬ ‫نسبة‬52–55‫العظمى‬ ‫الكثافة‬ ‫من‬Gmm
)%( ‫الركامية‬ ‫للمواد‬ ‫الرملي‬ ‫المكافئ‬‫عن‬ ‫يقل‬ ‫ال‬61‫شتو‬ً‫ا‬ ‫(مواصفة‬T-176)
‫جدول‬12‫االسفلتي‬ ‫االساس‬ ‫لطبقة‬ ‫الجودة‬ ‫متطلبات‬ :.
‫و‬ ‫قطر‬‫المنخل‬ ‫رقم‬
% ‫المارة‬ ‫المئوية‬ ‫النسبة‬
( ‫التدرج‬3)25‫مم‬
‫األ‬ ‫الحد‬‫قصى‬
‫اإل‬‫سمي‬
( ‫التدرج‬2)25‫مم‬
‫األ‬ ‫الحد‬‫قصى‬
‫اإل‬‫سمي‬
‫ج‬ ‫صنف‬
( ‫التدرج‬1)37.5‫مم‬
‫األ‬ ‫الحد‬‫اإل‬ ‫قصى‬‫سمي‬
37.5‫مليمتر‬(1.5)‫انش‬--111
25‫مليمتر‬(1)‫انش‬11111175–51
15‫مليمتر‬(3/4)‫انش‬51-11175-5165-81
12.5‫مليمتر‬(1/2)‫انش‬78–5375–8151–71
5.5‫مليمتر‬(3/8)‫انش‬57–7255–6545–62
4.75‫مليمتر‬‫(رقم‬4)43–5835–6131–46
2‫مليمتر‬‫(رقم‬11)28–4321–3518–33
1.425‫مليمتر‬‫(رقم‬41)13–287–215–18
1.18‫مليمتر‬‫(رقم‬81)-5-253–13
1.175‫مليمتر‬‫(رقم‬211)3-73-72-5
‫جدول‬13:‫االسفلتي‬ ‫االساس‬ ‫لطبقة‬ ‫التدرج‬ ‫متطلبات‬.
‫واألرصفة‬ ‫للبالط‬ ‫البصري‬ ‫الفحص‬
‫تنفيذها‬ ‫جودة‬ ‫مراعاة‬ ‫ويجب‬ ‫والمنسوب‬ ‫والمستوى‬ ‫الجودة‬ ‫وبنفس‬ ‫السابق‬ ‫البالط‬ ‫نوعية‬ ‫نفس‬ ‫من‬ ‫البالط‬ ‫نوعية‬ ‫تكون‬ ‫أن‬ ‫يجب‬
‫قصه‬ ‫تم‬ ‫قد‬ ‫البالط‬ ‫لواحق‬ ‫أن‬ ‫من‬ ‫التأكد‬ ‫ويتم‬.‫الحفرية‬ ‫أجزاء‬ ‫لجميع‬ ‫المنشار‬ ‫بواسطة‬
‫االسفلتي‬ ‫السائل‬ ‫رش‬ ‫تقييم‬MC1‫و‬‫بـ‬ ‫القديم‬ ‫اإلسفلت‬ ‫أطراف‬ ‫دهن‬RC2
‫و‬ ‫منتظم‬ ‫بشكل‬ ‫تم‬ ‫سطحها‬ ‫جفاف‬ ‫بعد‬ ‫الترابية‬ ‫الطبقة‬ ‫على‬ ‫االسفلتي‬ ‫السائل‬ ‫رش‬ ‫أن‬ ‫من‬ ‫التأكد‬ ‫يجب‬( ‫بمعدل‬65,1-75,1)
‫لتر/م‬2‫لمادة‬MC1‫و‬ ،‫القص‬ ‫استقامة‬ ‫من‬ ‫التأكد‬ ‫كذلك‬‫و‬ ‫االسفلتي‬‫و‬ ‫نظافته‬‫قص‬15‫ا‬ ‫جانبي‬ ‫كال‬ ‫من‬ ‫سم‬‫الحفرية‬ ‫سفلت‬
‫و‬ ‫الرئيسية‬ ‫للشوارع‬11‫و‬ ‫الفرعية‬ ‫للشوارع‬ ‫سم‬‫أ‬‫دهن‬ ‫تم‬ ‫نه‬RC2‫ال‬ ‫األطراف‬ ‫على‬‫ل‬ ‫داخلية‬‫و‬ ‫اإلسفلت‬ ‫قص‬‫و‬ ‫منتظم‬ ‫بشكل‬
( ‫عن‬ ‫يزيد‬ ‫ال‬ ‫بمعدل‬25,1‫لتر/م‬ )2‫لمادة‬RC2.
‫للشوارع‬ ‫القطعيات‬
‫القطعيات‬ ‫اختبار‬ ‫عمل‬ ‫يتم‬‫على‬‫الترابية‬ ‫الطبقات‬ ‫من‬ ‫طبقة‬ ‫لكل‬ ‫اختبار‬ ‫عمل‬ ‫يتم‬ ‫بحيث‬ ‫الحفر‬ ‫بقية‬ ‫عن‬ ‫منفصل‬ ‫بشكل‬ ‫طبقات‬
‫و‬‫اال‬‫الحركة‬ ‫ذات‬ ‫الشوارع‬ ‫تعتبر‬ ‫أن‬ ‫على‬ ‫سفلتية‬‫الدائبة‬.‫الطوارئ‬ ‫أعمال‬ ‫ضمن‬
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 21 of 45
SDCS-02-17 REV.01
9 Specification of Installation of Duct Bank at Road Crossing
9.1 General:
This specification gives requirements for installation of underground duct banks at road
crossings The. duct bank consists of PVC conduits direct buried in compacted sand or
encased in concrete.
9.2 Excavation:
The excavation for a duct bank shall be completed to its full length at crossing before
any conduit is laid. Possible obstructions might be encountered which would make it
difficult to maintain proper grading or drainage of the duct run.
‫الحفر‬ ‫مسار‬
‫شارع‬
‫شارع‬
‫الحالة‬ ‫هذه‬ ‫في‬ ‫اختبارات‬ ‫ثالثة‬ ‫احتساب‬ ‫يتم‬ ‫شارع‬ ‫إلى‬ ‫شارع‬ ‫من‬ ‫الحفر‬ ‫اتجاه‬ ‫تغير‬ :) 6 ( ‫رقم‬ ‫مسار‬
.) ‫فرعي‬ ‫أو‬ ‫رئيس‬ ( ‫الشارع‬ ‫ونوعية‬ ‫العمق‬ ‫حسب‬ ‫دك‬ ‫طبقة‬ ‫لكل‬
‫شارع‬
‫ثالثة‬ ‫احتساب‬ ‫يتم‬ ‫الحالة‬ ‫هذه‬ ‫في‬ ‫جانب‬ ‫إلى‬ ‫جانب‬ ‫من‬ ‫الواحد‬ ‫الشارع‬ ‫في‬ ‫الحفر‬ ‫تغير‬ : ) 6 ( ‫رقم‬ ‫مسار‬
‫طبق‬ ‫لكل‬ ‫اختبارات‬.‫الشارع‬ ‫ونوعية‬ ‫العمق‬ ‫حسب‬ ‫دك‬ ‫ة‬
‫الحفر‬ ‫مسار‬
‫شارع‬‫واحد‬
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 22 of 45
SDCS-02-17 REV.01
Asphalt shall be cut by a motor driven saw. Excavated materials shall be immediately
removed from site and hauled to an approved municipal dumping yard.
Manual digging shall be used at locations where existing underground facilities (e.g.
water pipes, sewage lines, cables etc.) are encountered. Existing facilities uncovered
during excavation shall be protected, shored, braced, and supported, as necessary.
All protective covers, warning tapes, position markers, etc. pertaining to existing
underground utilities shall be preserved during excavation and restored in position during
backfilling.
The excavation shall be properly sheeted and braced, as necessary, to prevent the sides
from caving in due to soft or sandy soil, traffic vibration, etc. All excavations exceeding
1.5 meter depth shall be properly sheeted and braced.
The depth of the duct bank shall be in accordance with the requirement of the
municipality or ministry of communication ( as applicable ) and it shall provide a
minimum cover of 500 mm. The excavation for the duct banks shall provide a minimum
grade or slope of 250 mm per 100 m. The bottom of the excavation shall be carefully
finished to the exact grade required for the duct bank and shall have a minimum bearing
capacity of 140 kpa.
The width of the duct bank shall be as per the figures
Multiple layer duct banks shall be constructed if there is any difficulty to temporarily
cover with steel plate the very wide ( greater than 1300 mm ) open duct banks.
Where the earth walls of the excavation are firm enough to sustain themselves, they may
be used to serve as the forms for a concrete encased duct bank.
9.3 Duct Bank construction
General:
Direct buried concrete encased duct banks shall be constructed with Type DB PVC
conduit.
In laying PVC conduit, each piece of conduit shall be inspected for breakage. Where
jointing conduits, the conduit end without socked only shall be coated with solvent
cement and the conduits joined with a twisting motion to spread the cement.
As far as possible, conduits shall be so installed that the cable will enter and leave
through the socket ends of the conduits. In case of difficulty in arranging this, a straight
coupling shall be installed on the plain end of the conduit and cable shall be pulled
through this coupling.
Direct buried duct bank:
Constructing a direct buried duct bank shall consist of installing conduits with compacted
sand around the conduits. The sand shall be clean, fine, free from organic matter, and
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 23 of 45
SDCS-02-17 REV.01
compacted in 150 mm layers to 85%. Relative density ( ASTM-D-2049 ) at a moisture
content not less than 80%.
Reinforced concrete bulkheads ( precast or cast at site ) shall be installed at each end of
the duct bank. Bulkheads shall be as per the figures concrete shall conform to the
specification of section 6 of this clause and shall be colored or painted red on the top of
the surface.
Concrete encased duct bank:
Construction of a concrete encased duct bank consists of installing the conduits on
spacers or fixing them to the reinforcing steel bars driven inside the ground along the
trench length and pouring the concrete encasement. Spacers or bars for supporting the
conduit are installed at intervals or approximately 2.5 meters.
If the concrete mix is sloppy it may be necessary to weight or brace the duct assembly to
prevent it from floating. Sandbag or other weights can be placed over the conduit spacers.
This is not required if conduits are already fixed to the reinforcing steel bars.
If it is necessary to interrupt the concrete pouring for any appreciable time, as from one
work day until the next, the joint between the pouring shall be made as near vertical as
possible and shall be reinforced with 12 mm dia. Concrete reinforcing bars which extend
in to the concrete at least 600 mm on each side of the joint. Bars shall be placed at each
corner of the duct bank and they shall have a minimum cover of 80 mm of concrete.
Concrete for duct bank construction shall conform to the specification given on section 6
and shall be colored or painted red on the top surface.
9.4 Backfilling and reinstatement:
Backfilling of the duct back excavation shall be in accordance of the requirements of the
municipality or ministry of communications (as applicable). If not specified, backfill
shall be clean, fine sand, free from organic matter, compacted in 250 mm layers to 95%
maximum dry density ( modified Proctor ).
Warning tape shall be laid in the backfill between the duct bank and the base layer of the
roadway. The spacing between the duct bank and the warning tape shall be as large as
site conditions permit up to 500 mm.
Reinstatement of sidewalks, streets, and roads shall be in accordance with the
specification of municipality or ministry of communications ( as applicable ).
9.5 Duct cleaning and inspection:
On completion of a duct bank, a test mandrel and wire brush cleaner shall be pulled
through each conduit. The test mandrel shall be 6mm less in diameter than the nominal
inside diameter of the conduit while the wire brush shall be slightly larger than the
conduit.
The testing and cleaning of a concrete encased duct bank shall be done the day after the
concrete has been poured to eliminate any concrete which may have seeped in to the
ducts.
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 24 of 45
SDCS-02-17 REV.01
A nylon pull line shall be installed in each conduit after cleaning. All conduits shall
remain plugged until cables are installed through them.
9.6 Concrete Specification:
Portland Cement:
Type V ( Sulphate resistant ) conforming to ASTM specification C-150
Aggregates:
All Aggregates shall conform to ASTM specification C-33 and the following:
a. Coarse aggregate – round maximum sized 20 mm.
b. Fine Aggregate – percent of total, 40% to 55%; fineness modulus, 2.6 to 2.9.
Water:
Must be potable, clean and free from deleterious amounts of acids, alkalis or organic
materials . salt water or sea water shall not be used.
Strength:
Minimum strength, 21.0 MPA ( 3,000 psi ) in 28 days.
Slump:
Shall not exceed 150 mm ( based on standard 150 mm dia. test cylinder ).
Ready mixed concrete:
Ready mixed concrete shall be mixed in an approved plant, using approved materials as
specified. Water shall be added at the mixing plant except where haul is greater than one
hour from mixing plant, in which case water shall be added at the jobsite.
Job mixed concrete:
Job mixed concrete shall be mixed in an approved manner, using approved materials as
specified. Each batch must be mixed not less than one minute after all materials are in
mixer.
Reservations:
SEC reserves the right to inspect and/or test all materials and equipment concerned with
the concrete covered by this specification.
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 25 of 45
SDCS-02-17 REV.01
10 General notes on Medium voltage HDD works:
10.1 All dimensions are in millimeters unless indicated otherwise noted.
10.2 The contractor shall submit a directional drilling package containing the
justification for the proposed cable formation/ spacing, PVC conduit , fill
compound ( if any ) and pipe size that will attain the required cable MVA rating
for technical review and approval of SEC.
10.3 Site condition shall be investigated by the contractor. The contractor shall take
full responsibility for maintaining and protecting all existing site utilities, soil
condition and stability.
10.4 It is contractor’s responsibility to provide and install a de- watering system if
found necessary due to high ground water table. The de watering system shall be
reviewed and approved by SEC. contractor shall be also responsible for disposing
off the ground water using water tankers.
10.5 PVC conduit shall be terminated with end bells.
10.6 A minimum of one circuit run of spare ducts shall be provided in every directional
drilling installation. All spare ducts shall have a 13 mm (112’’1 Nylon ) rope
installed inside all cable ducts shall be sealed with the use of duct sealing units.
10.7 Test mandrel ( 6mm less in diameter than the normal inside diameter of the duct )
and wire brush cleaner ( 6mm larger than the duct ) shall be pulled thru to each
duct. A nylon pull line ( 13 mm diameter ) should be installed in each duct line (
power and communication ) after cleaning, construction drawings which indicate
duct line, length and routing shall be verified and field noted in conjunction with
duct testing operation.
10.8 The two ends of every directional drilling installation shall be marked by a sign
post , warning sign applicable arrow sign, another log, a voltage rating plate shall
also be provided, the material, size, paint and color of the voltage rating plate
shall be identical to that of the arrow signs.
10.9 Upon completion of duct bank installation, the contractor shall provide As- built
drawings, showing duct bank location and details to include in the duct bank
location mark. Location shall be referenced from permanent ( existing ) objects.
10.10 End cups shall be provided for all spare ducts.
10.11 Directional drilling shall be used only if other alternative means of crossing are
not possible.
10.12 Ampacity adequacy shall be verified where directional drilling is required.
10.13 backfilling _and reinstatement shall be in accordance of the requirements of
appropriate authority.
10.14 The process of directional drilling shall be as per contractor’s methods of
construction procedures and requirements.
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 26 of 45
SDCS-02-17 REV.01
10.15 The number of directional drilling conduits shall also depend on required number
of cable circuits and available right of wa
10.16 The details of the directional drilling method tone with description of the
machinery that will. Be used shall be submitted for company review and approval.
the contractor shall explain in details how the required clearance between each
circuit, other circuit and other utilities will be maintained.
10.17 Prior to commencement of any directional drilling work, the contractor shall get
approval and permission from the concerned row approving agencies.
10.18 All the above requirements shall be submitted for company review and approval.
10.19 The joints of the pipes shall be flexible. the pull applied on_ the curved pipes shall
be prescribed by the manufacturer and contractor has to work within these limits.
10.20 The drilling angle from the horizontal shall be with respect to property of site
material.
10.21 The contractor ‘s responsible for damaging any existing underground facility /
relocating & reinstating any existing underground facility for his work.
The typical dimensions for spacing & depth are shown in the section drawing below.
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 27 of 45
SDCS-02-17 REV.01
Cable Trenches Figures
1. Normal trench single LV cable --- Fig. 1
2. Normal trench double LV cable --- Fig. 2
3. Normal trench 3 LV cables --- Fig. 3
4. Micro trench LV cable --- Fig. 4
5. Micro trench MV cable --- Fig. 5
6. Normal trench MV single cable --- Fig. 6
7. Normal trench MV double cable --- Fig. 7
8. Normal trench MV 3 cables --- Fig. 8
9. Normal trench single MV cable 33KV for interconnection between
2 primary substations --- Fig. 9
10.Normal trench double MV cable 33KV for interconnection
between 2 primary substations --- Fig. 10
11.Normal trench MV 3 cables 33 KV for interconnection between 2
primary substations --- Fig. 11
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 28 of 45
SDCS-02-17 REV.01
1-Normal trench single LV cable ---- Fig. 1
2-Normal trench double LV cable ---- Fig. 2
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 29 of 45
SDCS-02-17 REV.01
3-Normal trench 3 LV cables ---- Fig. 3
4-Micro trench LV cable ---- Fig. 4
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 30 of 45
SDCS-02-17 REV.01
5-Micro trench MV cable ---- Fig. 5
6-Normal trench MV single cable ---- Fig. 6
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 31 of 45
SDCS-02-17 REV.01
7- Normal trench MV double cable ---- Fig. 7
8- Normal trench MV 3 cables ---- Fig. 8
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 32 of 45
SDCS-02-17 REV.01
9-Normal trench single MV cable 33KV for interconnection between 2 primary substations ---- Fig. 9
10- Normal trench double MV cable 33KV for interconnection between 2 primary substations --- Fig. 11
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 33 of 45
SDCS-02-17 REV.01
11- Normal trench MV 3 cables 33 KV for interconnection between 2 primary substations ---- Fig. 11
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 34 of 45
SDCS-02-17 REV.01
TYPICAL DETAILS OF DIRECT BURIED CABLE AT
CROSSOVER /Figures
1. PVC Conduit ---- Fig. 12
2. PVC Conduit Accessories ---- Fig. 13
3. Typical Cannal Crossing ---- Fig. 14
4. Direct Buried Cable at Crossover ---- Fig. 15
5. Direct Buried Duct Bank 1 of 2 ---- Fig. 16
6. Direct Buried Duct Bank 2 of 2 ---- Fig. 17
7. Concrete Encased Duct bank 1 of 2 ---- 18
8. Concrete Encased Duct bank 2 of 2 ---- 19
9. Service Cable Post ---- Fig. 20
10.Sign Post ---- Fig. 21
11.Medium voltage horizontal directional drilling (HDD) and
installation of Hope (high density polyethylene on road crossing) --
-- Fig. 22
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 35 of 45
SDCS-02-17 REV.01
1- PVC Conduit ---- Fig. 12
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 36 of 45
SDCS-02-17 REV.01
2- PVC Conduit Accessories ---- Fig. 13
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 37 of 45
SDCS-02-17 REV.01
3- Typical Cannal Crossing ---- Fig. 14
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 38 of 45
SDCS-02-17 REV.01
4- Direct Buried Cable at Crossover ---- Fig. 15
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 39 of 45
SDCS-02-17 REV.01
5- Direct Buried Duct Bank 1 of 2 ---- Fig. 16
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 40 of 45
SDCS-02-17 REV.01
6- Direct Buried Duct Bank 2 of 2 ---- Fig. 17
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 41 of 45
SDCS-02-17 REV.01
7- Concrete Encased Duct bank 1 of 2 ---- Fig.18
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 42 of 45
SDCS-02-17 REV.01
8- Concrete Encased Duct bank 2 of 2 ----Fig. 19
Saudi Electricity Company
Distribution Services Sector
CONSTRUCTION STANDARD FOR
UNDERGROUND DISTRIBUTION NETWORK
PART 17: CABLE TRENCHES
Issue Date: 8/2019 Page: 43 of 45
SDCS-02-17 REV.01
9- Service Cable Post ---- Fig. 20
Sdcs 02-17 rev 01 fainal
Sdcs 02-17 rev 01 fainal

More Related Content

What's hot

Relay Setting Calculation For REF615/ REJ601
Relay Setting Calculation For REF615/ REJ601Relay Setting Calculation For REF615/ REJ601
Relay Setting Calculation For REF615/ REJ601SARAVANAN A
 
Construction EHV Transmission Line
Construction EHV Transmission LineConstruction EHV Transmission Line
Construction EHV Transmission LineSURESH GOPAL
 
Electrical Design calculations
Electrical Design calculationsElectrical Design calculations
Electrical Design calculationsPankaj Chavan
 
Fr4 best practices-in-low-voltage-systems
Fr4 best practices-in-low-voltage-systemsFr4 best practices-in-low-voltage-systems
Fr4 best practices-in-low-voltage-systemsRayan Darine
 
Switch gear and protection
Switch gear and protectionSwitch gear and protection
Switch gear and protectionDinesh Sharma
 
Tes p-122.01-r0 (2)
Tes p-122.01-r0 (2)Tes p-122.01-r0 (2)
Tes p-122.01-r0 (2)Ibrahim Ali
 
Preliminary electrical load calculation course share
Preliminary electrical load calculation course sharePreliminary electrical load calculation course share
Preliminary electrical load calculation course shareAli Hassan
 
ETAP - Arc flash introduction
ETAP - Arc flash introductionETAP - Arc flash introduction
ETAP - Arc flash introductionHimmelstern
 
220 kv Sub-station Summer Training ppt
220 kv Sub-station Summer Training ppt220 kv Sub-station Summer Training ppt
220 kv Sub-station Summer Training pptShubham Patel
 
Phases of Construction & Erection for Wind Power Project_03 09 2019
Phases of Construction & Erection for Wind Power Project_03 09 2019Phases of Construction & Erection for Wind Power Project_03 09 2019
Phases of Construction & Erection for Wind Power Project_03 09 2019Gensol Engineering Limited
 
220 KV Switchyard general overview
220 KV Switchyard general overview220 KV Switchyard general overview
220 KV Switchyard general overviewThien Huynh
 
Transmission Line Towers and details
Transmission Line Towers and detailsTransmission Line Towers and details
Transmission Line Towers and detailsMahesh Sontyal
 
Drawings & Documents Required for Solar Projects
Drawings & Documents Required for Solar ProjectsDrawings & Documents Required for Solar Projects
Drawings & Documents Required for Solar ProjectsGensol Engineering Limited
 
Principles of Cable Selection
Principles of Cable SelectionPrinciples of Cable Selection
Principles of Cable SelectionLeonardo ENERGY
 
Guidelines for life extension of existing HVDC systems
Guidelines for life extension of existing HVDC systemsGuidelines for life extension of existing HVDC systems
Guidelines for life extension of existing HVDC systemsPower System Operation
 
Power surge protection devices
Power surge protection devices Power surge protection devices
Power surge protection devices Pratik Rasam
 
EDS Unit 4 (Protection and Coordination).pptx
EDS Unit 4 (Protection and Coordination).pptxEDS Unit 4 (Protection and Coordination).pptx
EDS Unit 4 (Protection and Coordination).pptxDr. Rohit Babu
 

What's hot (20)

Relay Setting Calculation For REF615/ REJ601
Relay Setting Calculation For REF615/ REJ601Relay Setting Calculation For REF615/ REJ601
Relay Setting Calculation For REF615/ REJ601
 
Construction EHV Transmission Line
Construction EHV Transmission LineConstruction EHV Transmission Line
Construction EHV Transmission Line
 
Electrical Design calculations
Electrical Design calculationsElectrical Design calculations
Electrical Design calculations
 
Fr4 best practices-in-low-voltage-systems
Fr4 best practices-in-low-voltage-systemsFr4 best practices-in-low-voltage-systems
Fr4 best practices-in-low-voltage-systems
 
Switch gear and protection
Switch gear and protectionSwitch gear and protection
Switch gear and protection
 
Tes p-122.01-r0 (2)
Tes p-122.01-r0 (2)Tes p-122.01-r0 (2)
Tes p-122.01-r0 (2)
 
Preliminary electrical load calculation course share
Preliminary electrical load calculation course sharePreliminary electrical load calculation course share
Preliminary electrical load calculation course share
 
ETAP - Arc flash introduction
ETAP - Arc flash introductionETAP - Arc flash introduction
ETAP - Arc flash introduction
 
220 kv Sub-station Summer Training ppt
220 kv Sub-station Summer Training ppt220 kv Sub-station Summer Training ppt
220 kv Sub-station Summer Training ppt
 
Phases of Construction & Erection for Wind Power Project_03 09 2019
Phases of Construction & Erection for Wind Power Project_03 09 2019Phases of Construction & Erection for Wind Power Project_03 09 2019
Phases of Construction & Erection for Wind Power Project_03 09 2019
 
design of tower
design of towerdesign of tower
design of tower
 
220 KV Switchyard general overview
220 KV Switchyard general overview220 KV Switchyard general overview
220 KV Switchyard general overview
 
Transmission Line Towers and details
Transmission Line Towers and detailsTransmission Line Towers and details
Transmission Line Towers and details
 
Drawings & Documents Required for Solar Projects
Drawings & Documents Required for Solar ProjectsDrawings & Documents Required for Solar Projects
Drawings & Documents Required for Solar Projects
 
testing formats
testing formatstesting formats
testing formats
 
Principles of Cable Selection
Principles of Cable SelectionPrinciples of Cable Selection
Principles of Cable Selection
 
Guidelines for life extension of existing HVDC systems
Guidelines for life extension of existing HVDC systemsGuidelines for life extension of existing HVDC systems
Guidelines for life extension of existing HVDC systems
 
Power System Earthing Guide
Power System Earthing GuidePower System Earthing Guide
Power System Earthing Guide
 
Power surge protection devices
Power surge protection devices Power surge protection devices
Power surge protection devices
 
EDS Unit 4 (Protection and Coordination).pptx
EDS Unit 4 (Protection and Coordination).pptxEDS Unit 4 (Protection and Coordination).pptx
EDS Unit 4 (Protection and Coordination).pptx
 

Similar to Sdcs 02-17 rev 01 fainal

ILP Scotland CPD Webinar: What should Scotland consider when planning electri...
ILP Scotland CPD Webinar: What should Scotland consider when planning electri...ILP Scotland CPD Webinar: What should Scotland consider when planning electri...
ILP Scotland CPD Webinar: What should Scotland consider when planning electri...Institution of Lighting Professionals
 
ESKOM Transmission Ten-Year Development Plan 2013-2022
ESKOM Transmission Ten-Year Development Plan 2013-2022ESKOM Transmission Ten-Year Development Plan 2013-2022
ESKOM Transmission Ten-Year Development Plan 2013-2022Dr Lendy Spires
 
Minimum Voltage Level for interfacing of NRSE/CPP Projects with State Grid
Minimum Voltage Level for interfacing of NRSE/CPP Projects with State GridMinimum Voltage Level for interfacing of NRSE/CPP Projects with State Grid
Minimum Voltage Level for interfacing of NRSE/CPP Projects with State GridSimarpreet H.Singh
 
The minimum voltage tevel for interfacing of NRSE/CPP projects with State Gri...
The minimum voltage tevel for interfacing of NRSE/CPP projects with State Gri...The minimum voltage tevel for interfacing of NRSE/CPP projects with State Gri...
The minimum voltage tevel for interfacing of NRSE/CPP projects with State Gri...HARTEK POWER
 
NEN-3140 SAMPLE REPORT
NEN-3140 SAMPLE REPORTNEN-3140 SAMPLE REPORT
NEN-3140 SAMPLE REPORTArkady Mitnik
 
Electrical Draftsman
Electrical DraftsmanElectrical Draftsman
Electrical Draftsmanmohammed aly
 
MNRE Clarification on the capacity with respect to inverter and eligibility o...
MNRE Clarification on the capacity with respect to inverter and eligibility o...MNRE Clarification on the capacity with respect to inverter and eligibility o...
MNRE Clarification on the capacity with respect to inverter and eligibility o...Harish Sharma
 
Solareff Information Brochure - Current Regulatory Position July 2016
Solareff Information Brochure - Current Regulatory Position July 2016Solareff Information Brochure - Current Regulatory Position July 2016
Solareff Information Brochure - Current Regulatory Position July 2016Solareff Pty Ltd
 
IRJET- Wireless Charging of Electric Vehicles
IRJET- Wireless Charging of Electric VehiclesIRJET- Wireless Charging of Electric Vehicles
IRJET- Wireless Charging of Electric VehiclesIRJET Journal
 
Electricty wiring code 2016
Electricty wiring code 2016Electricty wiring code 2016
Electricty wiring code 2016Manikandan Mani
 
Solareff Information Brochure - Current Regulatory Position September 2016
Solareff Information Brochure - Current Regulatory Position September 2016Solareff Information Brochure - Current Regulatory Position September 2016
Solareff Information Brochure - Current Regulatory Position September 2016Solareff Pty Ltd
 
experienced electerical engineer c.v
experienced electerical engineer  c.vexperienced electerical engineer  c.v
experienced electerical engineer c.vhamada mahmoud
 
Wiring design for commercial and industrial buildings
Wiring design for commercial and industrial buildingsWiring design for commercial and industrial buildings
Wiring design for commercial and industrial buildingsducusin_kevin07
 
SDG&E's Energy Storage and EV Proposed Rate Case
SDG&E's Energy Storage and EV Proposed Rate CaseSDG&E's Energy Storage and EV Proposed Rate Case
SDG&E's Energy Storage and EV Proposed Rate CaseUCSD-Strategic-Energy
 
IRJET- Experimental and Investigation of Automation Pipe Crack Detection ...
IRJET-  	  Experimental and Investigation of Automation Pipe Crack Detection ...IRJET-  	  Experimental and Investigation of Automation Pipe Crack Detection ...
IRJET- Experimental and Investigation of Automation Pipe Crack Detection ...IRJET Journal
 
ELECTRICAL SUPERVISOR CURRICULUM VITAE
ELECTRICAL SUPERVISOR CURRICULUM VITAEELECTRICAL SUPERVISOR CURRICULUM VITAE
ELECTRICAL SUPERVISOR CURRICULUM VITAEsekar palani
 

Similar to Sdcs 02-17 rev 01 fainal (20)

ILP Scotland CPD Webinar: What should Scotland consider when planning electri...
ILP Scotland CPD Webinar: What should Scotland consider when planning electri...ILP Scotland CPD Webinar: What should Scotland consider when planning electri...
ILP Scotland CPD Webinar: What should Scotland consider when planning electri...
 
ESKOM Transmission Ten-Year Development Plan 2013-2022
ESKOM Transmission Ten-Year Development Plan 2013-2022ESKOM Transmission Ten-Year Development Plan 2013-2022
ESKOM Transmission Ten-Year Development Plan 2013-2022
 
Minimum Voltage Level for interfacing of NRSE/CPP Projects with State Grid
Minimum Voltage Level for interfacing of NRSE/CPP Projects with State GridMinimum Voltage Level for interfacing of NRSE/CPP Projects with State Grid
Minimum Voltage Level for interfacing of NRSE/CPP Projects with State Grid
 
The minimum voltage tevel for interfacing of NRSE/CPP projects with State Gri...
The minimum voltage tevel for interfacing of NRSE/CPP projects with State Gri...The minimum voltage tevel for interfacing of NRSE/CPP projects with State Gri...
The minimum voltage tevel for interfacing of NRSE/CPP projects with State Gri...
 
Appendix: San Diego PEV Readiness Plan
Appendix: San Diego PEV Readiness PlanAppendix: San Diego PEV Readiness Plan
Appendix: San Diego PEV Readiness Plan
 
NEN-3140 SAMPLE REPORT
NEN-3140 SAMPLE REPORTNEN-3140 SAMPLE REPORT
NEN-3140 SAMPLE REPORT
 
GI11-Paper_McLellan
GI11-Paper_McLellanGI11-Paper_McLellan
GI11-Paper_McLellan
 
Electrical Draftsman
Electrical DraftsmanElectrical Draftsman
Electrical Draftsman
 
MNRE Clarification on the capacity with respect to inverter and eligibility o...
MNRE Clarification on the capacity with respect to inverter and eligibility o...MNRE Clarification on the capacity with respect to inverter and eligibility o...
MNRE Clarification on the capacity with respect to inverter and eligibility o...
 
Tes p-122.08-r0
Tes p-122.08-r0Tes p-122.08-r0
Tes p-122.08-r0
 
Moh'd Gaweish_CV
Moh'd Gaweish_CVMoh'd Gaweish_CV
Moh'd Gaweish_CV
 
Solareff Information Brochure - Current Regulatory Position July 2016
Solareff Information Brochure - Current Regulatory Position July 2016Solareff Information Brochure - Current Regulatory Position July 2016
Solareff Information Brochure - Current Regulatory Position July 2016
 
IRJET- Wireless Charging of Electric Vehicles
IRJET- Wireless Charging of Electric VehiclesIRJET- Wireless Charging of Electric Vehicles
IRJET- Wireless Charging of Electric Vehicles
 
Electricty wiring code 2016
Electricty wiring code 2016Electricty wiring code 2016
Electricty wiring code 2016
 
Solareff Information Brochure - Current Regulatory Position September 2016
Solareff Information Brochure - Current Regulatory Position September 2016Solareff Information Brochure - Current Regulatory Position September 2016
Solareff Information Brochure - Current Regulatory Position September 2016
 
experienced electerical engineer c.v
experienced electerical engineer  c.vexperienced electerical engineer  c.v
experienced electerical engineer c.v
 
Wiring design for commercial and industrial buildings
Wiring design for commercial and industrial buildingsWiring design for commercial and industrial buildings
Wiring design for commercial and industrial buildings
 
SDG&E's Energy Storage and EV Proposed Rate Case
SDG&E's Energy Storage and EV Proposed Rate CaseSDG&E's Energy Storage and EV Proposed Rate Case
SDG&E's Energy Storage and EV Proposed Rate Case
 
IRJET- Experimental and Investigation of Automation Pipe Crack Detection ...
IRJET-  	  Experimental and Investigation of Automation Pipe Crack Detection ...IRJET-  	  Experimental and Investigation of Automation Pipe Crack Detection ...
IRJET- Experimental and Investigation of Automation Pipe Crack Detection ...
 
ELECTRICAL SUPERVISOR CURRICULUM VITAE
ELECTRICAL SUPERVISOR CURRICULUM VITAEELECTRICAL SUPERVISOR CURRICULUM VITAE
ELECTRICAL SUPERVISOR CURRICULUM VITAE
 

Recently uploaded

Call for Papers - Educational Administration: Theory and Practice, E-ISSN: 21...
Call for Papers - Educational Administration: Theory and Practice, E-ISSN: 21...Call for Papers - Educational Administration: Theory and Practice, E-ISSN: 21...
Call for Papers - Educational Administration: Theory and Practice, E-ISSN: 21...Christo Ananth
 
(ANVI) Koregaon Park Call Girls Just Call 7001035870 [ Cash on Delivery ] Pun...
(ANVI) Koregaon Park Call Girls Just Call 7001035870 [ Cash on Delivery ] Pun...(ANVI) Koregaon Park Call Girls Just Call 7001035870 [ Cash on Delivery ] Pun...
(ANVI) Koregaon Park Call Girls Just Call 7001035870 [ Cash on Delivery ] Pun...ranjana rawat
 
UNIT-III FMM. DIMENSIONAL ANALYSIS
UNIT-III FMM.        DIMENSIONAL ANALYSISUNIT-III FMM.        DIMENSIONAL ANALYSIS
UNIT-III FMM. DIMENSIONAL ANALYSISrknatarajan
 
Introduction to Multiple Access Protocol.pptx
Introduction to Multiple Access Protocol.pptxIntroduction to Multiple Access Protocol.pptx
Introduction to Multiple Access Protocol.pptxupamatechverse
 
MANUFACTURING PROCESS-II UNIT-2 LATHE MACHINE
MANUFACTURING PROCESS-II UNIT-2 LATHE MACHINEMANUFACTURING PROCESS-II UNIT-2 LATHE MACHINE
MANUFACTURING PROCESS-II UNIT-2 LATHE MACHINESIVASHANKAR N
 
Call for Papers - African Journal of Biological Sciences, E-ISSN: 2663-2187, ...
Call for Papers - African Journal of Biological Sciences, E-ISSN: 2663-2187, ...Call for Papers - African Journal of Biological Sciences, E-ISSN: 2663-2187, ...
Call for Papers - African Journal of Biological Sciences, E-ISSN: 2663-2187, ...Christo Ananth
 
MANUFACTURING PROCESS-II UNIT-1 THEORY OF METAL CUTTING
MANUFACTURING PROCESS-II UNIT-1 THEORY OF METAL CUTTINGMANUFACTURING PROCESS-II UNIT-1 THEORY OF METAL CUTTING
MANUFACTURING PROCESS-II UNIT-1 THEORY OF METAL CUTTINGSIVASHANKAR N
 
Top Rated Pune Call Girls Budhwar Peth ⟟ 6297143586 ⟟ Call Me For Genuine Se...
Top Rated  Pune Call Girls Budhwar Peth ⟟ 6297143586 ⟟ Call Me For Genuine Se...Top Rated  Pune Call Girls Budhwar Peth ⟟ 6297143586 ⟟ Call Me For Genuine Se...
Top Rated Pune Call Girls Budhwar Peth ⟟ 6297143586 ⟟ Call Me For Genuine Se...Call Girls in Nagpur High Profile
 
The Most Attractive Pune Call Girls Manchar 8250192130 Will You Miss This Cha...
The Most Attractive Pune Call Girls Manchar 8250192130 Will You Miss This Cha...The Most Attractive Pune Call Girls Manchar 8250192130 Will You Miss This Cha...
The Most Attractive Pune Call Girls Manchar 8250192130 Will You Miss This Cha...ranjana rawat
 
Call Girls Service Nagpur Tanvi Call 7001035870 Meet With Nagpur Escorts
Call Girls Service Nagpur Tanvi Call 7001035870 Meet With Nagpur EscortsCall Girls Service Nagpur Tanvi Call 7001035870 Meet With Nagpur Escorts
Call Girls Service Nagpur Tanvi Call 7001035870 Meet With Nagpur EscortsCall Girls in Nagpur High Profile
 
UNIT-II FMM-Flow Through Circular Conduits
UNIT-II FMM-Flow Through Circular ConduitsUNIT-II FMM-Flow Through Circular Conduits
UNIT-II FMM-Flow Through Circular Conduitsrknatarajan
 
Booking open Available Pune Call Girls Koregaon Park 6297143586 Call Hot Ind...
Booking open Available Pune Call Girls Koregaon Park  6297143586 Call Hot Ind...Booking open Available Pune Call Girls Koregaon Park  6297143586 Call Hot Ind...
Booking open Available Pune Call Girls Koregaon Park 6297143586 Call Hot Ind...Call Girls in Nagpur High Profile
 
AKTU Computer Networks notes --- Unit 3.pdf
AKTU Computer Networks notes ---  Unit 3.pdfAKTU Computer Networks notes ---  Unit 3.pdf
AKTU Computer Networks notes --- Unit 3.pdfankushspencer015
 
Booking open Available Pune Call Girls Pargaon 6297143586 Call Hot Indian Gi...
Booking open Available Pune Call Girls Pargaon  6297143586 Call Hot Indian Gi...Booking open Available Pune Call Girls Pargaon  6297143586 Call Hot Indian Gi...
Booking open Available Pune Call Girls Pargaon 6297143586 Call Hot Indian Gi...Call Girls in Nagpur High Profile
 
Call Girls in Nagpur Suman Call 7001035870 Meet With Nagpur Escorts
Call Girls in Nagpur Suman Call 7001035870 Meet With Nagpur EscortsCall Girls in Nagpur Suman Call 7001035870 Meet With Nagpur Escorts
Call Girls in Nagpur Suman Call 7001035870 Meet With Nagpur EscortsCall Girls in Nagpur High Profile
 
Introduction to IEEE STANDARDS and its different types.pptx
Introduction to IEEE STANDARDS and its different types.pptxIntroduction to IEEE STANDARDS and its different types.pptx
Introduction to IEEE STANDARDS and its different types.pptxupamatechverse
 
Coefficient of Thermal Expansion and their Importance.pptx
Coefficient of Thermal Expansion and their Importance.pptxCoefficient of Thermal Expansion and their Importance.pptx
Coefficient of Thermal Expansion and their Importance.pptxAsutosh Ranjan
 
KubeKraft presentation @CloudNativeHooghly
KubeKraft presentation @CloudNativeHooghlyKubeKraft presentation @CloudNativeHooghly
KubeKraft presentation @CloudNativeHooghlysanyuktamishra911
 

Recently uploaded (20)

Call for Papers - Educational Administration: Theory and Practice, E-ISSN: 21...
Call for Papers - Educational Administration: Theory and Practice, E-ISSN: 21...Call for Papers - Educational Administration: Theory and Practice, E-ISSN: 21...
Call for Papers - Educational Administration: Theory and Practice, E-ISSN: 21...
 
(ANVI) Koregaon Park Call Girls Just Call 7001035870 [ Cash on Delivery ] Pun...
(ANVI) Koregaon Park Call Girls Just Call 7001035870 [ Cash on Delivery ] Pun...(ANVI) Koregaon Park Call Girls Just Call 7001035870 [ Cash on Delivery ] Pun...
(ANVI) Koregaon Park Call Girls Just Call 7001035870 [ Cash on Delivery ] Pun...
 
UNIT-III FMM. DIMENSIONAL ANALYSIS
UNIT-III FMM.        DIMENSIONAL ANALYSISUNIT-III FMM.        DIMENSIONAL ANALYSIS
UNIT-III FMM. DIMENSIONAL ANALYSIS
 
Introduction to Multiple Access Protocol.pptx
Introduction to Multiple Access Protocol.pptxIntroduction to Multiple Access Protocol.pptx
Introduction to Multiple Access Protocol.pptx
 
MANUFACTURING PROCESS-II UNIT-2 LATHE MACHINE
MANUFACTURING PROCESS-II UNIT-2 LATHE MACHINEMANUFACTURING PROCESS-II UNIT-2 LATHE MACHINE
MANUFACTURING PROCESS-II UNIT-2 LATHE MACHINE
 
Call for Papers - African Journal of Biological Sciences, E-ISSN: 2663-2187, ...
Call for Papers - African Journal of Biological Sciences, E-ISSN: 2663-2187, ...Call for Papers - African Journal of Biological Sciences, E-ISSN: 2663-2187, ...
Call for Papers - African Journal of Biological Sciences, E-ISSN: 2663-2187, ...
 
MANUFACTURING PROCESS-II UNIT-1 THEORY OF METAL CUTTING
MANUFACTURING PROCESS-II UNIT-1 THEORY OF METAL CUTTINGMANUFACTURING PROCESS-II UNIT-1 THEORY OF METAL CUTTING
MANUFACTURING PROCESS-II UNIT-1 THEORY OF METAL CUTTING
 
Top Rated Pune Call Girls Budhwar Peth ⟟ 6297143586 ⟟ Call Me For Genuine Se...
Top Rated  Pune Call Girls Budhwar Peth ⟟ 6297143586 ⟟ Call Me For Genuine Se...Top Rated  Pune Call Girls Budhwar Peth ⟟ 6297143586 ⟟ Call Me For Genuine Se...
Top Rated Pune Call Girls Budhwar Peth ⟟ 6297143586 ⟟ Call Me For Genuine Se...
 
The Most Attractive Pune Call Girls Manchar 8250192130 Will You Miss This Cha...
The Most Attractive Pune Call Girls Manchar 8250192130 Will You Miss This Cha...The Most Attractive Pune Call Girls Manchar 8250192130 Will You Miss This Cha...
The Most Attractive Pune Call Girls Manchar 8250192130 Will You Miss This Cha...
 
Call Girls Service Nagpur Tanvi Call 7001035870 Meet With Nagpur Escorts
Call Girls Service Nagpur Tanvi Call 7001035870 Meet With Nagpur EscortsCall Girls Service Nagpur Tanvi Call 7001035870 Meet With Nagpur Escorts
Call Girls Service Nagpur Tanvi Call 7001035870 Meet With Nagpur Escorts
 
UNIT-II FMM-Flow Through Circular Conduits
UNIT-II FMM-Flow Through Circular ConduitsUNIT-II FMM-Flow Through Circular Conduits
UNIT-II FMM-Flow Through Circular Conduits
 
Booking open Available Pune Call Girls Koregaon Park 6297143586 Call Hot Ind...
Booking open Available Pune Call Girls Koregaon Park  6297143586 Call Hot Ind...Booking open Available Pune Call Girls Koregaon Park  6297143586 Call Hot Ind...
Booking open Available Pune Call Girls Koregaon Park 6297143586 Call Hot Ind...
 
AKTU Computer Networks notes --- Unit 3.pdf
AKTU Computer Networks notes ---  Unit 3.pdfAKTU Computer Networks notes ---  Unit 3.pdf
AKTU Computer Networks notes --- Unit 3.pdf
 
Booking open Available Pune Call Girls Pargaon 6297143586 Call Hot Indian Gi...
Booking open Available Pune Call Girls Pargaon  6297143586 Call Hot Indian Gi...Booking open Available Pune Call Girls Pargaon  6297143586 Call Hot Indian Gi...
Booking open Available Pune Call Girls Pargaon 6297143586 Call Hot Indian Gi...
 
Call Girls in Nagpur Suman Call 7001035870 Meet With Nagpur Escorts
Call Girls in Nagpur Suman Call 7001035870 Meet With Nagpur EscortsCall Girls in Nagpur Suman Call 7001035870 Meet With Nagpur Escorts
Call Girls in Nagpur Suman Call 7001035870 Meet With Nagpur Escorts
 
Introduction to IEEE STANDARDS and its different types.pptx
Introduction to IEEE STANDARDS and its different types.pptxIntroduction to IEEE STANDARDS and its different types.pptx
Introduction to IEEE STANDARDS and its different types.pptx
 
Roadmap to Membership of RICS - Pathways and Routes
Roadmap to Membership of RICS - Pathways and RoutesRoadmap to Membership of RICS - Pathways and Routes
Roadmap to Membership of RICS - Pathways and Routes
 
DJARUM4D - SLOT GACOR ONLINE | SLOT DEMO ONLINE
DJARUM4D - SLOT GACOR ONLINE | SLOT DEMO ONLINEDJARUM4D - SLOT GACOR ONLINE | SLOT DEMO ONLINE
DJARUM4D - SLOT GACOR ONLINE | SLOT DEMO ONLINE
 
Coefficient of Thermal Expansion and their Importance.pptx
Coefficient of Thermal Expansion and their Importance.pptxCoefficient of Thermal Expansion and their Importance.pptx
Coefficient of Thermal Expansion and their Importance.pptx
 
KubeKraft presentation @CloudNativeHooghly
KubeKraft presentation @CloudNativeHooghlyKubeKraft presentation @CloudNativeHooghly
KubeKraft presentation @CloudNativeHooghly
 

Sdcs 02-17 rev 01 fainal

  • 1. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 1 of 45 SDCS-02-17 REV.01 SDCS-02-17 Rev.01 CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES This document contains proprietary information developed by and for exclusive use of Saudi Electricity Company (SEC) Distribution Network. Your acceptance of the document is an acknowledgment that it must be used for the identified purpose/application and during the period indicated. It cannot be used or copied for any other purposes nor released to others without prior written authorization of SEC Distribution Sector. SEC shall assume no responsibility for any type of misuse and/or misapplication, and any arm resulting there from. SEC also reserves the right take any necessary actions to protect its interest against unauthorized use.
  • 2. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 2 of 45 SDCS-02-17 REV.01 SDCS-02-17 Rev.01 CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES
  • 3. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 3 of 45 SDCS-02-17 REV.01 Table of Contents 1 INTRODUCTION .............................................................................................................4 2 SERVICE CONDITIONS AND CONSTRUCTION PARAMETERS ............................4 3 REVISION AND ADDITIONS ........................................................................................4 4 DEFINITIONS...................................................................................................................4 5 RIGHT-OF-WAY..............................................................................................................4 6 DIRECT BURIED CABLE INSTALLATION.................................................................5 7 SOIL CLASSIFICATION: ..............................................................................................15 8 SOIL AND ASPHAILT TEST........................................................................................16 9 Specification of Installation of Duct Bank at Road Crossing..........................................21 9.1 General:...................................................................................................................21 9.2 Excavation: .............................................................................................................21 9.3 Duct Bank construction ...................................................................................... 22 9.4 Backfilling and reinstatement............................................................................. 23 9.5 Duct cleaning and inspection .............................................................................. 23 9.6 Concrete Specification ....................................................................................... 24 10 General notes on Medium voltage HDD works...............................................................25
  • 4. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 4 of 45 SDCS-02-17 REV.01 1 INTRODUCTION This standard specifies the design, and installation practices to be applied in the construction of MV and LV cable of underground distribution system. It is intended to assist the engineers and field personnel to achieve standardization in construction and to ensure a satisfactory and economical level of service without operating restrictions so that the operational errors should be minimum for safety and reliability. 2 SERVICE CONDITIONS AND CONSTRUCTION PARAMETERS For construction and operation of underground cable distribution network, the service conditions and system requirements shall be as given in the latest revision of SEC General Specification No.01-SDMS-01. 3 REVISION AND ADDITIONS This standard is subject to revision as new materials and methods of construction are developed. The latest revision of this standard shall be applicable. Revised sheets shall be issued from time to time and should be inserted as soon as these are received. Superseded or obsolete sheets shall be removed immediately upon receipt of revised sheets. The date of the latest issue of each sheet is printed at the top corner under the standard number. 4 DEFINITIONS Ultimate strength is the maximum load which a material will sustain when the load is gradually increased until the rupture or failure takes place. 5 RIGHT-OF-WAY If required by the local authority, the right-of-way (R-O-W) for the proposed route of an underground cable must be obtained from the concerned authority- (e.g. municipality, ministry of communication) during engineering stage of the project. Given below is the procedure to be followed in obtaining R-O-W: a. Prepare R-O-W drawing proposed showing proposed route of the underground cable, cross-section of the trench or duct bank (if required) and location of other utilities (e.g. telephone, water, sewer) lines along proposed route (if known). b. Submit R-O-W drawing to the relations section in the concerned operating area. c. The actual construction work shall not be started until the digging permit from relevant authorities is obtained.
  • 5. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 5 of 45 SDCS-02-17 REV.01 Standard R-O-W locations for underground utilities in streets of new areas have been developed by the Ministry of Municipal and Rural Affairs in coordination with the Ministry of Communications and the ministries having authority over the concerned utilities. 6 DIRECT BURIED CABLE INSTALLATION 1.6‫الطرق‬ ‫في‬ ‫الخدمات‬ ‫تمديد‬ ‫ومواصفات‬ ‫شروط‬: ‫العامة‬ ‫الشروط‬‫المفتوح‬ ‫الخندق‬ ‫(طريقة‬:) 1.‫على‬‫والمواصف‬ ‫بالشروط‬ ‫التقيد‬ ‫المقاولين‬ ‫جميع‬.‫ات‬ 2.‫على‬.‫بالعمل‬ ‫البدء‬ ‫قبل‬ ‫العالقة‬ ‫ذات‬ ‫الجهات‬ ‫قبل‬ ‫من‬ ‫الالزمة‬ ‫التصاريح‬ ‫علي‬ ‫الحصول‬ ‫المقاولين‬ ‫جميع‬ 3.‫على‬‫يجدد‬ ‫لم‬ ‫ما‬ ‫العمل‬ ‫استئناف‬ ‫يجوز‬ ‫وال‬ ‫العالقة‬ ‫ذات‬ ‫الجهات‬ ‫قبل‬ ‫من‬ ‫انتهائه‬ ‫قبل‬ ‫التصريح‬ ‫تجديد‬ ‫المقاول‬ .ً‫ا‬‫نظام‬ ‫الترخيص‬ 4.‫على‬.‫المتبع‬ ‫حسب‬ ‫الفرعية‬ ‫والبلديات‬ ‫المشاريع‬ ‫تنسيق‬ ‫مكتب‬ ‫مع‬ ‫التنسيق‬ ‫المقاول‬ 5.‫على‬‫والصرف‬ ‫والتليفون‬ ‫والمياه‬ ‫الغاز‬ ‫تمديدات‬ ‫مثل‬ ‫األرض‬ ‫تحت‬ ‫الخدمات‬ ‫عن‬ ‫المعلومات‬ ‫تجميع‬ ‫المقاول‬ ... ‫والكهرباء‬‫على‬ ‫والحصول‬ ،‫الخ‬ ...‫والبلديات‬ ‫الحكومية‬ ‫الدوائر‬ ‫من‬ ‫الالزمة‬ ‫التصاريح‬ 6.‫ا‬ ‫المقاول‬ ‫على‬‫على‬ ‫الحصول‬ ‫من‬ ‫لتأكد‬.‫األخرى‬ ‫المرافق‬ ‫والمتنوعة‬ ‫الخاصة‬ ‫بالمواقع‬ ‫الالزمة‬ ‫التصاريح‬ 1.6:‫السالمة‬ ‫شروط‬ ‫و‬ ‫العامة‬ ‫والسالمة‬ ‫الحيطة‬ ‫إجراءات‬ ‫اتخاذ‬ ‫المقاول‬ ‫يراعي‬:‫اآلتي‬ ‫إنفاذ‬ 1.‫و‬ ‫الحفرية‬ ‫أول‬ ‫اللوحات‬ ‫وضع‬‫أ‬‫و‬ ‫خرها‬‫التقاط‬ ‫عند‬‫المؤسسة‬ ‫أو‬ ‫(الشركة‬ ‫المقاول‬ ‫اسم‬ ‫تحمل‬ ‫الرئيسية‬ ‫عات‬‫و‬ )‫الشركة‬ ‫السع‬‫اإلدارة‬ ‫و‬ ‫(القطاع‬ ‫للكهرباء‬ ‫ودية‬‫و‬ ‫لها‬ ‫التابع‬ ).‫العمل‬ ‫تصريح‬ ‫صورة‬ 2.‫و‬ ‫اإلرشادية‬ ‫اللوحات‬ ‫استعمال‬‫و‬ ‫العاكسة‬ ‫الدولية‬ ‫التحذيرية‬‫و‬ ‫كافية‬ ‫بصورة‬ ‫المرورية‬ ‫الحواجز‬‫حسب‬ ‫ظاهرة‬ ‫و‬ ‫المرور‬ ‫تعليمات‬.‫السالمة‬ ‫قسم‬ /‫المدني‬ ‫الدفاع‬ ‫إدارة‬ 3.‫أمام‬ ‫الليل‬ ‫أثناء‬ ‫كافية‬ ‫إضاءة‬ ‫وضع‬‫و‬‫عل‬‫ى‬‫و‬ ‫الحفر‬ ‫جانبي‬‫عل‬‫ى‬‫عن‬ ‫تزيد‬ ‫ال‬ ‫مسافات‬2‫و‬ ‫متر‬‫ملونة‬ ‫اإلضاءة‬ ‫تكون‬ ‫و‬‫عن‬ ‫تقل‬ ‫ال‬ ‫بطاقة‬15،‫وات‬‫بوضع‬ ‫فيكتفي‬ ‫اللحام‬ ‫بخصوص‬ ‫أما‬‫إل‬ ‫باإلضافة‬ ‫ملونة‬ ‫تحذيرية‬ ‫شرائط‬‫ى‬‫عواكس‬ .‫مناسبة‬ ‫إضاءة‬ ‫مع‬ ‫فسفورية‬ 4.‫و‬ ‫للمشاة‬ ‫عبارات‬ ‫وضع‬‫عل‬ ‫السيارات‬‫ى‬‫عل‬ ‫المدن‬ ‫داخل‬ ‫الطولية‬ ‫الحفريات‬‫ى‬‫مسافات‬111‫عل‬ ‫متر‬‫ى‬‫و‬ ‫األكثر‬‫في‬ ‫عل‬ ‫بالسكان‬ ‫اآلهلة‬ ‫غير‬ ‫المناطق‬‫ى‬‫مسافة‬211.‫حد‬ ‫كأقصى‬ ‫متر‬ 5.‫عل‬ ‫صراحة‬ ‫النص‬ ‫حالة‬ ‫في‬ ‫إال‬ ‫الجانبين‬ ‫من‬ ‫أي‬ ‫إغالق‬ ‫يجوز‬ ‫فال‬ ‫جانبين‬ ‫من‬ ‫مكون‬ ‫الشارع‬ ‫كان‬ ‫إذا‬‫ى‬‫في‬ ‫ذلك‬ .‫للمقاول‬ ‫الممنوح‬ ‫التصريح‬ 6.‫عل‬ ‫يجب‬ ‫طريق‬ ‫أي‬ ‫قفل‬ ‫حالة‬ ‫في‬‫ى‬‫ت‬ ‫بعمل‬ ‫القيام‬ ‫المقاول‬‫عل‬ ‫مسفلتة‬ ‫حويلة‬‫ى‬‫و‬ ‫حسابه‬‫تنسيق‬ ‫مكتب‬ ‫مع‬ ‫بالتنسيق‬ ‫و‬ ‫المشاريع‬‫و‬ ‫المرور‬ ‫إدارة‬.‫باألمانة‬ ‫الصيانة‬ ‫إدارة‬ 1.6:‫الفنية‬ ‫العامة‬ ‫الشروط‬ 1.‫و‬ ‫المنفذة‬ ‫األعمال‬ ‫كل‬‫تكون‬ ‫أن‬ ‫ينبغي‬ ‫المستخدمة‬ ‫المواد‬‫متوافقة‬‫والشروط‬ ‫والمقاسات‬ ‫والمقاطع‬ ‫الخطوط‬ ‫مع‬ .‫المواصفات‬ ‫في‬ ‫المذكورة‬ ‫واالحتماالت‬ 2..‫العمل‬ ‫في‬ ‫استخدامها‬ ‫قبل‬ ‫الشركة‬ ‫قبل‬ ‫من‬ ‫تقبل‬ ‫أن‬ ‫ينبغي‬ ‫المستخدمة‬ ‫المواد‬ 3..‫عنها‬ ‫تزيد‬ ‫أو‬ ‫المواصفات‬ ‫مع‬ ‫تتوافق‬ ‫أن‬ ‫ينبغي‬ ‫العمل‬ ‫في‬ ‫المستخدمة‬ ‫المواد‬ ‫جميع‬ 4.‫عل‬‫ى‬‫و‬ ‫تحديد‬ ‫المقاول‬.‫للعمل‬ ‫تنفيذه‬ ‫عند‬ ‫األرض‬ ‫تحت‬ ‫المرافق‬ ‫حماية‬ 5.‫االختب‬‫و‬ ‫(بالموقع‬ ‫الالزمة‬ ‫ارات‬‫المعامل‬‫سال‬ ‫من‬ ‫للتأكد‬ )‫الد‬ ‫مة‬‫حيث‬.‫الحاجة‬ ‫حسب‬ ‫تؤخذ‬ 6.‫على‬‫و‬ ‫لسحب‬ ‫الالزمة‬ ‫المعدات‬ ‫تجهيز‬ ‫المقاول‬‫أو‬ ‫المياه‬ ‫شفط‬‫و‬ ‫الحفريات‬ ‫تدخل‬ ‫التي‬ ‫الجوفية‬ ‫المياه‬.‫العمل‬ ‫مواقع‬
  • 6. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 6 of 45 SDCS-02-17 REV.01 Note: Being the most economical way, direct earth buried cable laying has been standardized except where the cable route intersects road, street and other utility mains. The major activities associated with direct buried cable installation are trench excavation, cable laying, are described in the following sections. through is trench constructions for direct buried cable. 6.4 Trench Excavation Before proceeding with actual work of trench excavation, following preparations should be completed: a. Review the cable route drawings, R-O-W drawings, digging permit, and inspect the cable route from end to end. b. Decide locating where cable drums shall be unloaded at site, keeping in view the actual cable lengths on drums. c. Decide locations of cable joints. Avoid street intersections. Joints should preferably be made no closer than 10 meters from edge of any street intersections. d. Obtain necessary permissions from the traffic police for the work schedule, warning and lights and design of detours. e. Keep ready the necessary number of night warning lamps, stands, wooden/steel bridges for maintaining pedestrian f. Arrange necessary manpower keeping in view the work schedule and expiry date of digging permit. 6.4.1 Trench Specification ‫الحفريات‬ ‫مواصفات‬:- 1.‫ينبغي‬‫أ‬‫بالكابالت‬ ‫الحفريات‬ ‫تكون‬ ‫ن‬‫و‬‫اإل‬ ‫قدر‬ ‫مستقيمة‬ ‫المواسير‬‫أ‬ ‫و‬ ‫مكان‬‫و‬ ‫فقية‬‫و‬ ‫عمودية‬‫تحويل‬ ‫وجود‬ ‫حالة‬ ‫في‬ ‫يجب‬‫أ‬‫بتدرج‬ ‫يكون‬ ‫ن‬‫المواصفات‬ ‫حسب‬‫با‬ ‫الخاصة‬.‫للضرر‬ ‫الكابل‬ ‫لتعرض‬ ‫منعا‬ ‫لكابالت‬ 2.‫يجب‬ ‫الحفريات‬‫أ‬‫تمدد‬ ‫ن‬‫إ‬( ‫لى‬111‫م‬‫لي‬‫م‬‫الكي‬ ‫تحت‬ ‫من‬ ) ‫تر‬‫يقل‬ ‫ما‬ ‫على‬ ‫للسماح‬ ‫الماسورة‬ ‫أو‬ ‫بل‬‫من‬(111‫م‬‫لي‬‫م‬‫تر‬) ‫من‬‫و‬ ‫حول‬ ‫الناعم‬ ‫الرمل‬. ‫الكابل‬ ‫تحت‬ 3.( ‫بعمق‬ ‫تكون‬ ‫ان‬ ‫يجب‬ ‫الحفريات‬651‫م‬‫لي‬‫م‬‫تر‬( ‫و‬ ‫المنخفض‬ ‫الضغط‬ ‫كابالت‬ ‫لحفريات‬ )811‫م‬‫لي‬‫م‬‫تر‬‫لحفريات‬ ) ‫و‬ ‫المتوسط‬ ‫الضغط‬ ‫كابالت‬‫يجب‬ ‫العمق‬ ‫هذا‬ ‫عن‬ ‫زيادة‬ ‫الحفر‬ ‫حالة‬ ‫في‬‫أ‬‫الردم‬ ‫إعادة‬ ‫تتم‬ ‫ن‬‫إ‬‫العمق‬ ‫لى‬‫بمواد‬ ‫المطلوب‬ ‫د‬ ( ‫بنسبة‬ ‫مختارة‬55‫حسب‬ ) %ASDM( ‫على‬ ‫المحتوية‬ ‫للتربة‬15# ( ‫رقم‬ ‫المنخل‬ ‫من‬ ) ‫مار‬ %211(‫أو‬ (85( ‫أقل‬ ‫على‬ ‫المحتوية‬ ‫الصرف‬ ‫لحرية‬ ‫المستخدمة‬ ‫الصقة‬ ‫الغير‬ ‫للتربة‬ ‫نسبية‬ ‫كثافة‬ ) %15‫الغير‬ ‫للمادة‬ ) % ‫الترب‬ ‫بالستيكية‬‫ة‬# ( ‫رقم‬ ‫المنخل‬ ‫من‬ ‫المارة‬211.) 4.‫األ‬‫يجب‬ ‫الحفرية‬ ‫في‬ ‫الضعيفة‬ ‫أو‬ ‫اللينة‬ ‫جزاء‬‫أ‬‫أو‬ ‫سبق‬ ‫ما‬ ‫حسب‬ ‫تد‬ ‫ن‬‫أ‬‫بموا‬ ‫الضعيفة‬ ‫التربة‬ ‫تغيير‬ ‫يتم‬ ‫ن‬‫ردم‬ ‫د‬ ‫مختارة‬‫المواصفات‬ ‫حسب‬ ‫جيدة‬. 5.‫يكون‬ ‫أن‬ ‫يجب‬ ‫الحفرية‬ ‫أسفل‬‫متساوي‬‫و‬‫و‬ ‫الصخور‬ ‫من‬ ‫خال‬‫الحادة‬ ‫المواد‬‫التي‬‫بالكابل‬ ‫تضر‬ ‫أن‬ ‫يمكن‬. 6.‫الحفرية‬ ‫عرض‬‫المتوسط‬ ‫الجهد‬ ‫لكابالت‬ ‫العادية‬(411‫م‬‫لي‬‫م‬‫لكي‬ ) ‫تر‬‫و‬ ‫واحد‬ ‫بل‬‫عرض‬(611‫م‬‫لي‬‫م‬‫تر‬)‫و‬ ‫للكابلين‬( 511‫م‬‫لي‬‫م‬‫تر‬)‫و‬ ‫كابالت‬ ‫لثالث‬‫يتم‬‫إ‬‫ضافة‬(311‫م‬‫لي‬‫م‬‫تر‬)‫كي‬ ‫لكل‬‫إضافي‬ ‫بل‬.
  • 7. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 7 of 45 SDCS-02-17 REV.01 7.‫الحفرية‬ ‫عرض‬‫المنخفض‬ ‫الجهد‬ ‫لكابالت‬ ‫العادية‬(411‫م‬‫لي‬‫م‬‫تر‬‫كابالت‬ ‫لثالث‬ )‫و‬‫يتم‬‫إ‬‫ضافة‬(111‫م‬‫لي‬‫م‬‫تر‬)‫لكل‬ ‫ك‬‫ي‬‫إضافي‬ ‫بل‬. 8.‫الردم‬ ‫يتم‬‫ال‬ ‫حول‬‫منشئ‬‫ا‬‫و‬ ‫التفتيش‬ ‫غرف‬ ‫مثل‬ ‫ت‬‫التجمع‬‫و‬‫الخ‬ .... ‫المحابس‬ ‫غرف‬،‫باستخد‬‫مناسبة‬ ‫ردم‬ ‫مواد‬ ‫ام‬ ‫مع‬ ‫محسنة‬ ‫مواد‬ ‫لها‬ ‫يضاف‬‫و‬ ‫بالماء‬ ‫الرش‬‫و‬ ‫جيدا‬ ‫الخلط‬‫نسبة‬ ‫حتى‬ ‫الد‬55‫مع‬ ‫القصوى‬ ‫الجافة‬ ‫الكثافة‬ ‫من‬ % ‫المدة‬ ‫مراعاه‬‫التي‬‫يجب‬‫أ‬‫و‬ ‫الردم‬ ‫عملية‬ ‫بين‬ ‫تفصل‬ ‫ن‬‫صب‬‫ال‬‫منشئا‬‫ت‬‫الخرسانية‬. ‫الدقيقة‬ ‫الحفريات‬: 1.( ‫الدقيقة‬ ‫الحفرية‬ ‫عرض‬211‫مليمتر‬‫لك‬ )‫ي‬‫سواء‬ ‫واحد‬ ‫بل‬‫المتوسط‬ ‫للجهد‬. 2.‫الدقيقة‬ ‫الحفرية‬ ‫عرض‬‫لك‬‫ي‬‫بل‬( ‫المنخفض‬ ‫الجهد‬211‫م‬‫لي‬‫م‬‫تر‬)‫أو‬ ‫الواحد‬ ‫للكابل‬‫ل‬‫لك‬‫ي‬.‫فقط‬ ‫بلين‬ ‫التنفيذ‬ ‫خطوات‬: 1.‫اإل‬ ‫األعمال‬‫و‬ : ‫دارية‬‫إ‬ ‫تشمل‬‫ص‬‫و‬ ‫فسح‬ ‫دار‬‫الال‬ ‫التصاريح‬ ‫على‬ ‫الحصول‬.‫العمل‬ ‫لتنفيذ‬ ‫زمة‬ 2.‫الطبيعة‬ ‫على‬ ‫الموقع‬ ‫تحديد‬‫و‬ :‫و‬ ‫العمل‬ ‫مكان‬ ‫تحديد‬ ‫ذلك‬ ‫يشمل‬‫و‬ ‫المشروع‬ ‫سير‬ ‫خط‬‫الزمني‬ ‫البرنامج‬ ‫عمل‬‫ل‬‫لتنفيذ‬‫و‬ .‫مرحلة‬ ‫لكل‬ ‫الزمنية‬ ‫المدة‬ 3.‫و‬ ،‫والعاملين‬ ‫العمل‬ ‫موقع‬ ‫تأمين‬:‫يشمل‬ a.‫و‬ ‫بالمشروع‬ ‫الخاصة‬ ‫اللوحة‬ ‫وضع‬‫المشروع‬ ‫اسم‬ ‫المتضمن‬‫و‬‫وال‬ ‫الفسح‬ ‫ورقة‬‫المشروع‬ ‫لها‬ ‫التابعة‬ ‫جهة‬ ‫و‬‫و‬ ‫المقاول‬ ‫اسم‬‫المشروع‬ ‫كروكي‬)‫(خريطة‬‫و‬‫و‬ ‫الزمنية‬ ‫المدة‬‫ما‬‫إ‬.‫ذلك‬ ‫لى‬ b.‫الحما‬ ‫وسائل‬ ‫وضع‬‫و‬ ‫ية‬‫األ‬.‫مان‬ 4.‫ال‬ ‫تخطيط‬.‫المعتمد‬ ‫الزمني‬ ‫والجدول‬ ‫تنفيذها‬ ‫المطلوبة‬ ‫للمرحلة‬ ‫تبعا‬ ‫الحفر‬ ‫مسار‬ ‫تخطيط‬ ‫يتم‬ : ‫موقع‬ 5.‫حيث‬ ‫الحفر‬ ‫أعمال‬:‫التالية‬ ‫للشروط‬ ً‫ا‬‫تبع‬ ‫العمل‬ ‫يتم‬ a.‫الترنشز‬ ‫بواسطة‬ ‫الحفر‬‫و‬‫بعرض‬211‫م‬‫لي‬‫م‬‫تر‬. b.‫نق‬‫الترنشز‬ ‫من‬ ‫مباشرة‬ ‫الحفر‬ ‫مخلفات‬ ‫ل‬‫إ‬‫القالب‬ ‫لى‬. c.‫مر‬‫اعا‬‫ة‬‫الحفر‬ ‫استقامة‬. d.‫حسب‬ ‫الحفر‬ ‫يكون‬‫والمتابعة‬ ‫التنسيقات‬ ‫مكتب‬ ‫بنظام‬ ‫المحدد‬ ‫العمق‬. 6.‫أ‬‫و‬ ‫مناسبة‬ ‫ردم‬ ‫مواد‬ ‫استخدام‬ ‫يتم‬ : ‫الردم‬ ‫عمال‬‫األ‬ ‫من‬ ‫معتمدة‬‫و‬ ‫مانة‬. ‫الحفر‬ ‫عمق‬ ‫بكامل‬ ( ‫العادية‬ ‫الخرسانية‬ ‫الخلطة‬ ‫استخدام‬ ‫يمكن‬ ‫كما‬1.8‫م‬3 ‫بحص‬‫ى‬, ‫متدرج‬1.4‫م‬3 , ‫نظيف‬ ‫رمل‬251)‫اسمنت‬ ‫كجم‬. ‫التدرج‬ ‫المنخل‬ ‫رقم‬16#31#51#111#211# ‫نسبة‬‫المار‬ ‫المادة‬ ‫من‬% 111-5555-5455-5515-163-1 ‫جدول‬1.‫المعتمدة‬ ‫المناخل‬ : ‫ب‬‫اإلضافة‬‫إ‬‫الشك‬ ‫معالج‬ ‫لى‬Accelerator(2‫لتر/م‬3 ‫كحد‬‫أ‬)‫دنى‬،‫بشكل‬ ‫ميكانيكية‬ ‫بطريقة‬ ‫المكونات‬ ‫خلط‬ ‫يجب‬ ‫كما‬ ‫الخلط‬ ‫تجانس‬ ‫يضمن‬: 7.‫الالصقة‬ ‫المادة‬‫المادة‬ ‫يستخدم‬ :RC2‫بمعدل‬1.5‫كجم/م‬2 ‫و‬‫مادة‬MC1( ‫بمعدل‬65,1-75,1‫لتر/م‬ )2 ‫و‬‫ترش‬ ‫و‬ ‫الميكانيكية‬ ‫باألجهزة‬‫الردم‬ ‫طبقات‬ ‫شك‬ ‫منتظمة‬ ‫بطريقة‬‫و‬‫المقصوص‬ ‫االسفلت‬ ‫جوانب‬ ‫تنظيف‬ ‫بعد‬. 8.‫أ‬‫االسفلت‬ ‫عمال‬‫بعرض‬ ‫لإلسفلت‬ ‫الكشط‬ ‫يتم‬ :1‫بعد‬ ‫متر‬‫إ‬‫عن‬ ‫يقل‬ ‫ال‬ ‫بسمك‬ ‫الردم‬ ‫تمام‬6‫و‬ ‫الفرعية‬ ‫للشوارع‬ ‫سم‬8 ‫الرئيس‬ ‫للشوارع‬ ‫سم‬‫إ‬ ‫و‬ ‫ة‬‫السفلت‬ ‫عادة‬‫ه‬‫على‬ ‫المكشوطة‬ ‫الطبقات‬ ‫لكامل‬‫أ‬‫الح‬ ‫موقع‬ ‫يكون‬ ‫ن‬‫و‬ ‫الكشط‬ ‫منتصف‬ ‫في‬ ‫فر‬ ‫اآل‬ ‫يراعى‬ ‫أن‬:‫تي‬
  • 8. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 8 of 45 SDCS-02-17 REV.01 a.‫مادة‬ ‫ورش‬ ‫الجوانب‬ ‫تنظيف‬RC2. b.‫للمواصفات‬ ‫ومطابقة‬ ‫معتمدة‬ ‫االسفلتية‬ ‫الخلطة‬ ‫تكون‬. c.‫اال‬‫و‬ ‫بالمنسوب‬ ‫لتزام‬‫الطريق‬ ‫ميول‬. d.‫األ‬ ‫للقطوعات‬ ‫الفرادة‬ ‫استخدام‬ ‫يتم‬‫من‬ ‫طول‬311‫متر‬. 5.‫إ‬‫الطريق‬ ‫مكونات‬ ‫عادة‬‫يجب‬ :‫إ‬‫من‬ ‫الطريق‬ ‫مكونات‬ ‫عادة‬‫أ‬‫و‬ ‫رصفة‬‫علي‬ ‫كانت‬ ‫ما‬ ‫على‬ ‫مرورية‬ ‫عالمات‬‫ه‬‫بد‬ ‫قبل‬‫ء‬ .‫العمل‬ 11.‫أ‬‫و‬ ‫الردم‬ ‫طبقات‬ ‫من‬ ‫عينات‬ ‫خذ‬:‫اختبارها‬ a.‫الردم‬ ‫مواد‬:‫يتم‬‫أ‬‫كل‬ ‫عينة‬ ‫خذ‬411‫ف‬ ‫طولي‬ ‫متر‬‫أ‬‫يوم‬ ‫لكل‬ ‫قل‬. b.‫ال‬‫البصري‬ ‫تقييم‬‫الالصقة‬ ‫المواد‬ ‫تقييم‬ ‫يتم‬ :. 11.‫االسفلت‬ ‫اختبار‬:‫حيث‬‫بنسبة‬ ‫االسفلت‬ ‫د‬ ‫يتم‬53-55%‫و‬‫عمل‬ ‫يتم‬‫اال‬‫خت‬‫بار‬‫الخاصة‬ ‫ات‬‫بال‬‫خلطة‬‫اال‬‫لكل‬ ‫سفلتية‬ ‫إ‬‫نتاج‬‫أ‬‫من‬ ‫قل‬511‫و‬ ‫طن‬‫عينة‬‫إ‬‫ضافية‬‫إ‬‫بالمواد‬ ‫شك‬ ‫هنا‬ ‫كان‬ ‫ذا‬. :‫االسفلت‬ ‫قطع‬ 1.( ‫عن‬ ‫يقل‬ ‫ال‬ ‫وباتساع‬ ‫بالمنشار‬ ‫القطع‬ ‫يكون‬151( ‫أو‬ ‫والقروية‬ ‫البلدية‬ ‫الشئون‬ ‫وزارة‬ ‫مواصفات‬ ‫حسب‬ ) ‫مم‬211 ‫مليمتر‬( ‫بعمق‬ ‫جانب‬ ‫كل‬ ‫من‬ ‫الحفرية‬ ‫عرض‬ ‫عن‬ ‫زيادة‬ ‫المواصالت‬ ‫وزارة‬ ‫مواصفات‬ ‫حسب‬ )411‫مليمتر‬‫في‬ ) ‫و‬ ‫األساس‬ ‫تحت‬ ‫ما‬ ‫طبقة‬ ‫وجود‬ ‫حالة‬‫وجودها‬ ‫عدم‬ ‫حالة‬ ‫في‬‫ال‬ ‫بعمق‬ ‫يكون‬‫اال‬ ‫طبقة‬ ‫عمق‬ ‫عن‬ ‫يقل‬‫في‬ ‫الموجودة‬ ‫سفلت‬ .‫الطريق‬ 2.‫بزيادة‬ ‫االسفلت‬ ‫قطع‬ ‫يكون‬ ‫متر‬ ‫عن‬ ‫عرضها‬ ‫يزيد‬ ‫التي‬ ‫الحفريات‬ ‫حالة‬ ‫في‬ ‫أما‬( ‫بمقدار‬ ‫الحفرية‬ ‫عرض‬ ‫عن‬151 ‫مليمتر‬‫كال‬ ‫في‬ ).‫الحالتين‬ 3.‫من‬ ‫أقل‬ ‫الرصيف‬ ‫عن‬ ‫الحفرية‬ ‫بعد‬ ‫كان‬ ‫وإذا‬ ‫اللجنة‬ ‫قبل‬ ‫من‬ ‫والمحددة‬ ‫فقط‬ ‫الفرعية‬ ‫الشوارع‬ ‫حالة‬ ‫في‬‫من‬ ‫أقل‬ ‫أو‬ ‫متر‬ ‫حافة‬ ‫عن‬ ‫مترين‬‫رصيف‬ ‫وجود‬ ‫عدم‬ ‫حالة‬ ‫(في‬ ‫المبني‬.‫المشروع‬ ‫صاحب‬ ‫مواصفات‬ ‫حسب‬ ‫الحفرية‬ ‫عرض‬ ‫يكون‬ ،) 6.4.2 Excavation In deciding at what depth the trench should be excavated, it is necessary to take intoconsideration the changes being made in the existing grade level by any earth cut or fillwork to be carried out later. Such information should be gathered from the Ministry ofcommunications or municipality so that ultimately the standard depth of cable can beachieved.Trenches may be dug by hand or, if site conditions permit, a mechanical excavator canbe used. Asphalt shall be cut by a motor driven saw. Manual digging shall be used atlocations where existing underground facilities are encountered. Existing facilitiesuncovered during excavation shall be protected, shored, braced and supported, asnecessary. All protective covers, warning tapes, position markers, etc., pertaining toexisting underground utilities shall be preserved during excavation and restored inposition during backfilling. ‫أعمال‬:‫الحفر‬ 1.‫تتم‬‫وتحت‬ ‫االسفلت‬ ‫طبقات‬ ‫علي‬ ‫مطاطية‬ ‫أو‬ ‫خشبية‬ ‫ألواح‬ ‫بوضع‬ ‫االلتزام‬ ‫مع‬ ‫المناسبة‬ ‫بالمعدات‬ ‫الحفر‬ ‫عملية‬ ‫و‬ ،‫بخوازيق‬ ‫المنتهية‬ ‫األرجل‬ ‫ذات‬ ‫اآلالت‬ ‫استخدام‬ ً‫ا‬‫بات‬ ً‫ا‬‫منع‬ ‫ويمنع‬ ‫المعدات‬‫إعادة‬ ‫يمكن‬ ‫ال‬ ‫التي‬ ‫الحفر‬ ‫نواتج‬ ‫تحمل‬
  • 9. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 9 of 45 SDCS-02-17 REV.01 ‫ب‬ ‫العمل‬ ‫موقع‬ ‫تنظيف‬ ‫ويتم‬ ‫العمل‬ ‫موقع‬ ‫خارج‬ ‫مباشرة‬ ‫استخدامها‬‫الخاصة‬ ‫الحفر‬ ‫مخلفات‬ ‫حمل‬ ‫ويتم‬ ‫دائمة‬ ‫صفة‬ .‫الغرض‬ ‫لذلك‬ ‫المخصصة‬ ‫األماكن‬ ‫في‬ ‫ليرمي‬ ‫المدينة‬ ‫خارج‬ ‫إلي‬ ‫الكبيرة‬ ‫بالمشاريع‬ 2.‫خ‬ ‫الخدمة‬ ‫بتمديد‬ ‫الخاصة‬ ‫الخنادق‬ ‫تكون‬ ‫أن‬ ‫يجب‬‫و‬ ‫الجوفية‬ ‫المياه‬ ‫من‬ ً‫ا‬‫تمام‬ ‫الية‬‫عمل‬ ‫قبل‬ ‫غيرها‬‫يجب‬ ‫كما‬ ‫التمديد‬ ‫ية‬ ‫ل‬ ‫جانبي‬ ‫تدعيم‬‫األتربة‬ ‫انهيار‬ ‫لمنع‬ ‫لخندق‬‫في‬ ‫بأول‬ ً‫ال‬‫أو‬ ‫الزائدة‬ ‫الحفريات‬ ‫من‬ ‫التخلص‬ ‫مع‬ ‫ذلك‬ ‫طبيعتها‬ ‫استلزمت‬ ‫إذا‬ .‫المشرف‬ ‫المهندس‬ ‫يحددها‬ ‫أماكن‬ 3.‫على‬ ‫المحافظة‬ ‫يجب‬.‫العمل‬ ‫أثناء‬ ‫األخرى‬ ‫الخدمات‬ ‫خطوط‬ 4.:‫الصمت‬ ‫فائق‬ ‫الصخور‬ ‫تفتيت‬ ‫عامل‬ ‫استخدام‬ a.‫الصخور‬ ‫مواقع‬ ‫في‬ ‫الحفر‬ ‫عند‬ ‫الصمت‬ ‫فائق‬ ‫الصخور‬ ‫تفتيت‬ ‫عامل‬ ‫واستخدام‬ ‫توريد‬‫و‬ ‫الرخامية‬‫شديدة‬ ‫الجيرية‬ .‫الصالبة‬ b.‫المادة‬ ‫اسم‬‫الكيميائية‬‫الكالسيوم‬ ‫هيدروكسيد‬ (Calcium Hydroxide.) c.( ‫الكمية‬03‫م‬ / ‫كجم‬2 .) d.‫بعمق‬ ‫بالسطح‬ ‫ثقوب‬ ‫عمل‬ :‫االستخدام‬ ‫طريقة‬033‫واالخر‬ ‫ثقب‬ ‫كل‬ ‫بين‬ ‫والمسافة‬ ‫مم‬233‫مليمتر‬‫عدد‬ ‫(أي‬ 03‫م‬ ‫لكل‬ ‫ثقب‬2 ). e.‫الثقب‬ ‫قطر‬02‫مليمتر‬. f.‫يتم‬‫الكيميائية‬ ‫بالمادة‬ ‫الثقوب‬ ‫تعبئة‬‫بالفقرة‬ ‫اسمها‬ ‫الموضح‬b‫أعاله‬. ‫الحفرية‬ ‫جوانب‬ ‫تدعيم‬ 1.‫المشبعة‬ ‫أو‬ ‫لالنهيار‬ ‫القابلة‬ ‫التربة‬ ‫أو‬ ‫والرملية‬ ‫المفككة‬ ‫الطينية‬ ‫التربة‬ ‫في‬ ‫الحفرية‬ ‫جوانب‬ ‫تدعيم‬ ‫المقاول‬ ‫على‬ ‫يجب‬ .‫غيرها‬ ‫أو‬ ‫األمطار‬ ‫من‬ ‫سطحية‬ ‫لمياه‬ ‫تسرب‬ ‫وجود‬ ‫حالة‬ ‫في‬ ‫أو‬ ‫بالمياه‬‫توريد‬ ‫المقاول‬ ‫على‬ ‫يجب‬ ‫الحاالت‬ ‫هذه‬ ‫ففي‬ ‫لمنع‬ ،‫الحفرية‬ ‫جوانب‬ ‫لتدعيم‬ ‫الالزمة‬ ‫الهيدروليكية‬ ‫الدعامات‬ ‫وأجهزة‬ ‫اللوحية‬ ‫الخوازيق‬ ‫أو‬ ‫الصفائح‬ ‫كافة‬ ‫وتركيب‬ ‫ب‬ ‫الحفرية‬ ‫عرض‬ ‫على‬ ‫للمحافظة‬ ‫وذلك‬ ‫التربة‬ ‫تحر‬ ‫أو‬ ‫الموضعية‬ ‫االنهيارات‬‫المنشئ‬ ‫على‬ ‫يؤثر‬ ‫وأال‬ ‫االمكان‬ ‫قدر‬‫ات‬ ‫كما‬ ‫المجاورة‬‫ففي‬ ،‫الجدارية‬ ‫والدعائم‬ ‫الرأسية‬ ‫الدعائم‬ :‫الهيدروليكية‬ ‫للدعامات‬ ‫نوعان‬ ‫وهنا‬ .‫الشكل‬ ‫في‬ ‫مبين‬ ‫هو‬ ‫الزيت‬ ‫تفريغ‬ ‫يتم‬ ‫الدعامات‬ ‫فك‬ ‫وعند‬ ‫الزيت‬ ‫ضخ‬ ‫عند‬ ‫الحفرية‬ ‫جوانب‬ ‫على‬ ‫ضغط‬ ‫بقوة‬ ‫الدعامات‬ ‫تؤثر‬ ‫األول‬ ‫النوع‬ ‫ا‬ ‫الحاالت‬ ‫في‬ ‫المتباعدة‬ ‫الرأسية‬ ‫الدعامات‬ ‫وتستخدم‬ ،‫الضغط‬ ‫قوة‬ ‫وتنخفض‬‫الواحدة‬ ‫وتركب‬ ‫الحفر‬ ‫عمليات‬ ‫من‬ ‫لعادية‬ ‫األخرى‬ ‫تلوى‬. 2.‫حالة‬ ‫حسب‬ ‫متباعدة‬ ‫أو‬ ‫متصلة‬ ‫تكون‬ ‫الرأسية‬ ‫األلواح‬ ‫من‬ ‫عدد‬ ‫لتدعيم‬ ً‫ا‬‫أفقي‬ ‫تركيبها‬ ‫فيتم‬ ‫الجدارية‬ ‫الدعامات‬ ‫أما‬ ‫أمتار‬ ‫خمسة‬ ‫إلى‬ ‫الجدارية‬ ‫الدعامات‬ ‫طول‬ ‫يصل‬ ‫وقد‬ ،‫التربة‬. 3.‫الم‬ ‫على‬ ‫يجب‬ ‫أمتار‬ ‫ثالثة‬ ‫الحفرية‬ ‫عمق‬ ‫تجاوز‬ ‫حال‬ ‫وفي‬‫يسمح‬ ‫وال‬ ‫التدعيم‬ ‫طريقة‬ ‫بين‬ُ‫ت‬ ‫إنشائية‬ ‫مخططات‬ ‫تقديم‬ ‫قاول‬ ‫المخططات‬ ‫هذه‬ ‫على‬ ‫المهندس‬ ‫موافقة‬ ‫بعد‬ ‫إال‬ ‫الجوانب‬ ‫تدعيم‬ ‫أعمال‬ ‫في‬ ‫بالبدء‬. 4.‫و‬ ‫الردم‬ ‫أعمال‬ ‫مع‬ ‫وبالتوافق‬ ‫تدريجي‬ ‫بشكل‬ ‫التدعيم‬ ‫وسائل‬ ‫نزع‬ ‫يتم‬‫الد‬. ‫الخندق‬ ‫حفر‬ ‫متطلبات‬ 1.‫يجب‬‫تدعيم‬‫جوانب‬‫الخنادق‬‫التي‬‫يزيد‬‫عمقها‬‫على‬1.5‫أو‬ ‫متر‬‫تحدر‬‫إلى‬‫زاوية‬‫االستقرار‬‫الشكل‬ ‫في‬ ‫كما‬. 2.‫يجب‬‫توفير‬‫حماية‬‫فعالة‬‫للخنادق‬‫التي‬‫يقل‬‫عمقها‬‫عن‬1.5‫في‬ ‫متر‬‫األماكن‬‫التي‬‫يتوقع‬‫حدوث‬‫تفكك‬‫لتربة‬‫فيها‬‫و‬ ‫انهيار‬‫جوانب‬‫الخندق‬. 3.‫أن‬‫تكون‬‫المواد‬‫الالزمة‬‫لتدعيم‬‫الجوانب‬‫والتغطية‬‫باأللواح‬‫قوية‬‫وتمتد‬‫إلى‬‫قاع‬‫الحفرة‬. 4.‫ل‬ ‫إضافي‬ ‫تدعيم‬ ‫يستخدم‬‫ل‬‫جوانب‬‫في‬‫الخنادق‬‫التي‬‫تقع‬‫بجوار‬‫المناطق‬‫المردومة‬‫أو‬‫لالهتزازات‬ ‫المعرضة‬. 5.‫يجب‬‫حماية‬‫العمال‬‫الذين‬‫يدخلون‬‫إلى‬‫حفر‬‫القواعد‬‫أو‬‫األعمدة‬‫بتركيب‬‫إطار‬‫قوي‬‫قابل‬‫للنزع‬‫على‬‫مدى‬‫عمق‬ ‫الحفرة‬‫لمقاومة‬‫تحر‬‫التربة‬‫(باستثناء‬ ‫المحيطة‬‫الحفر‬)‫الشكل‬ ‫مخروطية‬‫انقاذ‬ ‫حبل‬ ‫استخدام‬ ‫العاملين‬ ‫على‬ ‫ويجب‬ .‫الحفرة‬ ‫من‬ ‫العامل‬ ‫إلخراج‬ ‫يكفي‬ ‫بما‬ ً‫ا‬‫قوي‬ 6.‫الحد‬‫األدنى‬‫لمتطلبات‬‫تدعيم‬‫الخندق‬‫ب‬‫األ‬‫مبينة‬ ‫خشاب‬‫ب‬:‫التالي‬ ‫الجدول‬
  • 10. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 10 of 45 SDCS-02-17 REV.01 ‫جدول‬2:.‫الحفريات‬ ‫لتدعيم‬ ‫القياسات‬ 7.‫يجب‬‫أ‬( ‫عمقها‬ ‫يبلغ‬ ‫التي‬ ‫الخنادق‬ ‫في‬ ‫تستعمل‬ ‫ن‬1.2)‫متر‬‫أ‬( ‫األقل‬ ‫على‬ ‫تمتد‬ ‫ساللم‬ ‫أكثر‬ ‫و‬1.51‫سطح‬ ‫فوق‬ )‫متر‬ ‫في‬ ‫الساللم‬ ‫هذه‬ ‫توضع‬ ‫ان‬ ‫ويجب‬ .‫الخندق‬‫أ‬‫يزي‬ ‫ال‬ ‫بحيث‬ ‫ماكن‬‫د‬( ‫االخر‬ ‫عن‬ ‫السلم‬ ‫بعد‬7.6)‫متر‬. 8.‫المستعرضة‬ ‫الركائز‬‫أ‬:‫يجب‬ ‫الخندق‬ ‫رافعات‬ ‫و‬ a.‫أ‬‫وضعية‬ ‫في‬ ‫توضع‬ ‫ن‬‫أ‬.‫صحيحة‬ ‫فقية‬ b.‫أ‬‫عمودية‬ ‫فراغات‬ ‫بينها‬ ‫تتر‬ ‫ن‬ c.‫أ‬‫بربطا‬ ‫(تربط‬ ‫بإحكام‬ ‫تثبت‬ ‫ن‬‫تنزلق‬ ‫ال‬ ‫بحيث‬ )‫ت‬‫أ‬.‫تسقط‬ ‫و‬ 5.‫صناديق‬ ‫استخدام‬ ‫يمكن‬‫الخنادق‬‫المتنقلة‬‫أو‬‫أغطية‬‫الخنادق‬‫االن‬‫زالقية‬‫بدال‬‫من‬‫تدعيم‬‫الجوانب‬‫وعند‬ ،‫إمالتها‬ ‫أو‬ ‫و‬ ‫تصمم‬ ‫ان‬ ‫يجب‬ ‫استعمالها‬‫و‬ ‫تنشا‬‫تصان‬‫بحيث‬‫توفر‬‫من‬‫الحماية‬‫الالزمة‬‫لذلك‬‫الخندق‬‫ما‬‫هو‬‫أو‬ ‫معادل‬‫أ‬‫مما‬ ‫فضل‬ ‫أ‬ ‫باأللواح‬ ‫التغطية‬ ‫توفره‬‫و‬‫الجوانب‬ ‫تدعيم‬. 11.‫يجب‬‫أ‬‫الردم‬ ‫يسير‬ ‫ن‬‫و‬‫إزالة‬‫دعامات‬‫الخندق‬‫مع‬‫بعضهما‬‫و‬‫يتم‬‫العمل‬‫من‬‫قاع‬‫الخندق‬‫إلى‬‫أعلى‬‫و‬‫الرافعات‬ ‫تحرر‬ ‫و‬‫األ‬.‫ببطء‬ ‫كتاف‬ ‫مالحظة‬: ‫الصلبة‬ ‫الصخور‬ ‫من‬ ‫الجوانب‬ ‫تدعيم‬ ‫يلزم‬ ‫ال‬‫أ‬‫البركانية‬ ‫الصخور‬ ‫و‬‫أ‬‫الصلصال‬ ‫من‬ ‫المشكلة‬ ‫الصخور‬ ‫و‬‫أ‬‫استبدال‬ ‫يمكن‬ ‫و‬ ‫الخشب‬‫بالركائز‬‫الفوال‬‫المستعرضة‬ ‫ذية‬‫والركائز‬‫ذات‬‫المقاومة‬‫حسب‬ ‫المعادلة‬‫الرغبة‬. 6.4.3 Sand Bedding/Cover and Cable Tiles A bedding of Clean, fine sand shall be placed at the bottom of the trench. After laying the cable, all stone and rubble that have fallen in to the trench during the cable laying shall be removed. A cover of clean, fine sand shall be placed over the cable. The thickness of sand bedding/cover shall be as per the relevant trench construction drawing. The sand bedding and cover shall be spread by hand tools to maintain an even thickness.
  • 11. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 11 of 45 SDCS-02-17 REV.01 ‫الناع‬ ‫الرمل‬‫م‬: ‫يتم‬( ‫بسمك‬ ‫الكابل‬ ‫وحول‬ ‫أسفل‬ ‫ناعم‬ ‫رمل‬ ‫وضع‬111‫م‬‫لي‬‫م‬‫تر‬‫للمواصفات‬ ‫مطابقا‬ ‫الرمل‬ ‫ويكون‬ ‫الكابل‬ ‫وأعلى‬ ‫أسفل‬ )‫اآلتية‬: ‫مقاس‬‫حجم‬:‫المنخل‬ ‫جدول‬3.‫المنخل‬ ‫مقاسات‬ : ‫بلك‬‫الحماية‬: ‫يجب‬‫حماية‬‫الكابالت‬‫المطمورة‬‫للجهود‬٣٣‫.ف‬‫و‬‫ذلك‬‫الرئيسة‬ ‫المحطات‬ ‫بين‬ ‫الربط‬ ‫عند‬‫فقط‬‫بواسطة‬‫بلك‬‫الحماية‬‫مق‬‫اس‬ 51* ‫مم‬211* ‫مم‬411‫يتم‬ ‫و‬ ‫مم‬‫وضع‬‫ه‬‫فوق‬‫رمل‬‫الحماية‬. 6.4.4 Backfilling and Reinstatement Backfilling and reinstatement of the trench shall be in accordance with the requirements of the authority (e.g. municipality. MOC, etc.) under whose jurisdiction the area falls. Warning tapes shall be laid in the backfill. ‫والدك‬ ‫الردم‬: 1.‫يتم‬‫وزارة‬ ‫أو‬ ‫والقروية‬ ‫البلدية‬ ‫الشئون‬ ‫وزارة‬ ‫مواصفات‬ ‫حسب‬ ‫مختارة‬ ‫بمواد‬ ‫ردمها‬ ‫المطلوب‬ ‫األماكن‬ ‫في‬ ‫الردم‬ ‫و‬ ‫المواصالت‬‫اإلخالل‬ ‫عدم‬ ‫مع‬‫ه‬ ‫في‬ ‫ورد‬ ‫بما‬‫ذ‬.‫المواصفات‬ ‫ه‬ 2.( ‫من‬ ‫أكثر‬ ‫بعمق‬ ‫الطبقات‬ ‫في‬611‫مليمتر‬‫سمكها‬ ‫يزيد‬ ‫ال‬ ‫بحيث‬ ‫طبقات‬ ‫علي‬ ‫الردم‬ ‫يتم‬ ،‫األساس‬ ‫تحت‬ ‫ما‬ ‫طبقة‬ ‫من‬ ) ‫عن‬(311‫مليمتر‬‫أقصى‬ ‫كحد‬ )‫و‬‫و‬ ‫بالماء‬ ‫ترش‬ ‫أن‬ ‫يجب‬‫النسب‬ ‫حسب‬ ‫الحفرية‬ ‫في‬ ‫توضع‬ ‫أن‬ ‫قبل‬ ً‫ا‬‫جيد‬ ‫تخلط‬ ‫للوصول‬ ‫المقررة‬‫إلى‬‫بموجب‬ ‫كثافة‬ ‫أحسن‬‫و‬ ‫المعدلة‬ ‫برمتو‬ ‫تجربة‬‫للوصول‬ ‫تهرس‬‫إلى‬( ‫نسبة‬51‫الكثافة‬ ‫من‬ ) % ‫ال‬ ‫العظمى‬ ‫الجافة‬‫المعدلة‬ ‫بركتو‬ ‫تجربة‬ ‫بموجب‬ ‫مقررة‬. 3.‫الط‬ ‫في‬‫على‬ ‫أعاله‬ ‫الطبقات‬ ‫تلي‬ ‫التي‬ ‫بقات‬( ‫من‬ ‫أقل‬ ‫عمق‬611‫مليمتر‬‫على‬ ‫فتردم‬ ‫األساس‬ ‫تحت‬ ‫من‬ )،ً‫ا‬‫أيض‬ ‫طبقات‬ ‫و‬( ‫عن‬ ‫يزيد‬ ‫ال‬ ‫طبقة‬ ‫كل‬ ‫سمك‬211‫مليمتر‬‫و‬ )‫يجب‬‫و‬ ‫بالماء‬ ‫ترش‬ ‫أن‬‫حتى‬ ‫تهرس‬‫إلى‬ ‫الوصول‬(55‫من‬ ) % ‫و‬ ، ‫العظمى‬ ‫الجافة‬ ‫الكثافة‬.‫للمواصفات‬ ً‫ا‬‫طبق‬ ‫المواد‬ ‫تكون‬ ‫أن‬ ‫يجب‬ 4.‫و‬ ‫الصخور‬ ‫قطع‬ ‫أو‬ ‫المكسرة‬ ‫الحصمة‬ ‫من‬ ‫متجانس‬ ‫مخلوط‬ ‫من‬ ‫تتكون‬ ‫المتدرج‬ ‫الحجري‬ ‫األساس‬ ‫تحت‬ ‫ما‬ ‫طبقة‬ ‫و‬ ‫الرمل‬‫و‬ ،‫الطمي‬:‫اآلتي‬ ‫حسب‬ ‫الطبقة‬ ‫هذه‬ ‫مواد‬ ‫تدرج‬ ‫أن‬ ‫يجب‬
  • 12. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 12 of 45 SDCS-02-17 REV.01 ‫جدول‬4.‫المناخل‬ ‫قياسات‬ : 5.‫لوح‬ ‫توضع‬‫بأبعاد‬ ‫ات‬1111‫م‬‫يل‬‫م‬‫تر‬*611‫ميلمتر‬‫عليها‬ ‫ويكتب‬ ‫الرئيسية‬ ‫التقاطعات‬ ‫عند‬ ‫ونهايته‬ ‫الحفر‬ ‫بداية‬ ‫عند‬ ‫الكت‬ ‫وتكون‬ ‫المشروع‬ ‫ورقم‬ ‫واالستشاري‬ ‫لها‬ ‫التابعة‬ ‫والجهة‬ ‫هاتفها‬ ‫ورقم‬ ‫المؤسسة‬ ‫أو‬ ‫الشركة‬ ‫اسم‬‫العربية‬ ‫باللغتين‬ ‫ابة‬ .‫واالنجليزية‬ 6.‫التحكم‬ ‫أجهزة‬ ‫بدليل‬ ‫حسبما‬ ‫والحواجز‬ ‫والتحذيرية‬ ‫االرشادية‬ ‫باللوحات‬ ‫وتزويدها‬ ‫المرورية‬ ‫التحويالت‬ ‫عمل‬ ‫يجب‬ .‫المواصالت‬ ‫وزارة‬ ‫قبل‬ ‫من‬ ‫الصادر‬ ‫العمل‬ ‫بمناطق‬ ‫المرور‬ ‫في‬ ‫النظامية‬ 7.‫من‬ ‫تتكون‬ ‫المتدرج‬ ‫الحصوي‬ ‫واألساس‬ ‫الحصوي‬ ‫األساس‬ ‫تحت‬ ‫ما‬ ً‫ا‬‫طبق‬‫أو‬ ‫المكسرة‬ ‫الحصمة‬ ‫من‬ ‫متجانس‬ ‫مخلوط‬ ‫ت‬ ‫أن‬ ‫ينبغي‬ ‫كذلك‬ ‫والطمي‬ ‫والرمل‬ ‫الصخور‬ ‫قطع‬‫كاليفورنيا‬ ‫تحمل‬ ‫نسبة‬ ‫كون‬61‫على‬ %‫و‬ ‫األقل‬‫إ‬‫ذلك‬ ‫تحقيق‬ ‫تعذر‬ ‫ذا‬ ‫ي‬ ‫بما‬ ‫للتوجيه‬ ‫المواصالت‬ ‫وزارة‬ ‫مع‬ ‫ينسق‬‫بالما‬ ‫المواد‬ ‫هذه‬ ‫ترش‬ ‫أن‬ ‫ويجب‬ ‫لزم‬‫و‬ ‫ء‬‫و‬ ً‫ا‬‫جيد‬ ‫تخلط‬‫و‬ ‫تفرش‬‫إل‬ ‫تهرس‬‫ى‬ ‫درجة‬111‫ا‬ ‫من‬ %‫لكثافة‬‫قاع‬ ‫مستوى‬ ‫من‬ ‫أقل‬ ‫مستوى‬ ‫على‬ ‫منها‬ ‫مقطع‬ ‫أعلى‬ ‫سطح‬ ‫مستوى‬ ‫يكون‬ ‫و‬ ‫القصوى‬ ‫الجافة‬ ‫اال‬‫و‬ ‫القديم‬ ‫سفلت‬‫على‬ ‫تفرد‬( ‫عن‬ ‫منها‬ ‫كل‬ ‫سمك‬ ‫يزيد‬ ‫ال‬ ‫طبقات‬151‫ميلمتر‬.) 8.‫الخاصة‬ ‫والمواصفات‬ ‫المواصالت‬ ‫وزارة‬ ‫مواصفات‬ ‫تطلبها‬ ‫التي‬ ‫االختبارات‬ ‫كافة‬ ‫اجراء‬ ‫المنفذ‬ ‫المقاول‬ ‫علي‬ ‫ينبغي‬ ‫بالمشروع‬.‫المشرف‬ ‫المهندس‬ ‫بتعليمات‬ ‫التقيد‬ ‫وكذلك‬ 5.:‫المنشآت‬ ‫حول‬ ‫الردم‬ a.‫و‬ ‫التجمع‬ ‫غرف‬ ،‫األساسات‬ ‫بها‬ ‫المقصود‬‫غ‬ ،‫الصمامات‬ ‫غرف‬ ،‫التفتيش‬‫إ‬ ... ‫الغسيل‬ ‫رف‬، ‫لخ‬‫و‬‫أن‬ ‫يجب‬ ‫يكون‬‫على‬ ‫للمواصفات‬ ‫مطابق‬ ‫بمواد‬ ‫الردم‬‫الطبقة‬ ‫سمك‬ ‫يتعدى‬ ‫ال‬ ‫طبقات‬151‫مليمتر‬‫و‬‫بالماء‬ ‫ترش‬ ‫أن‬ ‫يجب‬ ‫و‬ً‫ا‬‫جيد‬ ‫تخلط‬‫وت‬‫إ‬ ‫الوصول‬ ‫حتى‬ ‫هرس‬‫ل‬‫ى‬‫نسبة‬55‫النهائيتين‬ ‫الطبقتين‬ ‫وتعامل‬ ‫المقررة‬ ‫الجافة‬ ‫الكثافة‬ ‫من‬ % ‫العظمى‬ ‫الكثافة‬ ‫نسبة‬ ‫تصل‬ ‫بحيث‬ ‫الحجري‬ ‫األساس‬ ‫تحت‬ ‫ما‬ ‫طبقة‬ ‫بمثل‬‫إ‬‫ل‬‫ى‬111.% b.‫كاليفورنيا‬ ‫تحميل‬ ‫نسبة‬ ‫تكون‬ ‫أن‬ ‫يجب‬ ‫كذلك‬61‫عل‬ %‫ى‬‫و‬ ‫األقل‬ً‫ا‬‫جيد‬ ‫وتخلط‬ ‫بالماء‬ ‫المواد‬ ‫هذه‬ ‫ترش‬ ‫أن‬ ‫يجب‬ ‫و‬ ‫تفرش‬ ‫ثم‬‫تهرس‬‫إ‬‫ل‬‫ى‬‫كثافة‬ ‫درجة‬111‫المقرر‬ ‫الجافة‬ ‫الكثافة‬ ‫من‬ %‫المعدلة‬ ‫بروكتور‬ ‫تجربة‬ ‫بواسطة‬ ‫ة‬‫و‬ ‫عل‬ ‫الطبقة‬ ‫هذه‬ ‫سمك‬ ‫يكون‬‫ى‬‫منها‬ ‫كل‬ ‫طبقتين‬151‫ميليمتر‬‫و‬‫حت‬ ‫وتهرس‬ ‫بالماء‬ ‫ترش‬ ‫أن‬ ‫يجب‬‫ى‬‫الوصول‬‫إلى‬ ‫و‬ ‫المطلوبة‬ ‫الد‬ ‫درجة‬‫عن‬ ‫يزيد‬ ‫ال‬ ‫اللدونة‬ ‫معامل‬ ‫يكون‬ ‫أن‬ ‫يجب‬61.%
  • 13. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 13 of 45 SDCS-02-17 REV.01 11.‫إ‬:‫السفلتة‬ ‫عادة‬ a.‫المتدرج‬ ‫الحجري‬ ‫األساس‬ ‫تحت‬ ‫ما‬ ‫طبقة‬ ‫جفاف‬ ‫بعد‬‫اال‬ ‫من‬ ‫بطبقة‬ ‫ترش‬ ً‫ا‬‫تمام‬ ‫الماء‬ ‫من‬‫التجمد‬ ‫المتوسط‬ ‫سفلت‬ (DCI)‫بمعدل‬(1.5‫كج‬‫م‬‫و‬ ) ‫م‬ /‫ضبطها‬ ‫بعد‬ ‫المعتمدة‬ ‫الميكانيكية‬ ‫بالرشاشات‬ ‫المادة‬ ‫هذه‬ ‫ترش‬ ‫أن‬ ‫يجب‬ ‫المراد‬ ‫المنطقة‬ ‫أجزاء‬ ‫جميع‬ ‫في‬ ‫متجانس‬ ‫بشكل‬ ‫المقررة‬ ‫الكمية‬ ‫لترش‬.‫البراميل‬ ‫باستخدام‬ ‫أو‬ ‫سفلتتها‬ b.‫و‬ ‫هذا‬‫لمدة‬ ‫الطبقة‬ ‫هذه‬ ‫تتر‬24‫و‬ ‫األسفلتي‬ ‫األساس‬ ‫وضع‬ ‫عملية‬ ‫أو‬ ‫السفلتة‬ ‫عملية‬ ‫تتم‬ ‫ثم‬ ‫ساعة‬‫وضع‬ ‫قبل‬ ‫عليه‬ ‫يجب‬ ‫ثم‬ ً‫ا‬‫عمودي‬ ‫بالمنشار‬ ‫القديم‬ ‫األسفلت‬ ‫لحام‬ ‫منطقة‬ ‫بقص‬ ‫المقاول‬ ‫يقوم‬ ‫أن‬ ‫يجب‬ ‫األسفلتي‬ ‫األساس‬ ‫أتربة‬ ‫أو‬ ‫شوائب‬ ‫أية‬ ‫من‬ ‫الموقع‬ ‫تنظيف‬‫عل‬ ‫مترسبة‬‫ى‬‫ده‬ ‫يتم‬ ‫كذلك‬ ‫سفلتته‬ ‫المراد‬ ‫السطح‬‫األسفلت‬ ‫حواف‬ ‫ان‬ ‫اال‬ ‫بمادة‬ ‫القديم‬‫سفلت‬( ‫التجمد‬ ‫سريع‬RC2‫من‬ ً‫ا‬‫جيد‬ ‫تنظيفها‬ ‫بعد‬ ‫وكذلك‬ )‫األساس‬ ‫طبقة‬ ‫فرد‬ ‫يتم‬ ‫األتربة‬ ‫اال‬‫الوصول‬ ‫ليتم‬ ‫المناسب‬ ‫بالسمك‬ ‫سفلتي‬‫إ‬‫ل‬‫ى‬‫و‬ ‫الهرس‬ ‫بعد‬ ‫المطلوبة‬ ‫الطبقة‬ ‫سمك‬‫هذه‬ ‫مواد‬ ‫تخضع‬ ‫أن‬ ‫يجب‬ ‫للتد‬ ‫الطبقة‬:‫التالي‬ ‫رج‬ ‫جدول‬5.‫التدرج‬ : 11.‫اال‬ ‫نسبة‬ ‫تكون‬( ‫سفلت‬4-7‫عل‬ ‫وتكون‬ ‫الترنشات‬ ‫لحفريات‬ ‫بالنسبة‬ )%‫ى‬‫طبقتين‬‫و‬‫عل‬ ‫طبقة‬ ‫كل‬ ‫تفرد‬‫ى‬‫و‬ ‫حدة‬‫يجب‬ ‫رش‬‫اال‬ ‫الطبقة‬( ‫التجمد‬ ‫سريع‬ ‫الربط‬ ‫بمادة‬ ‫سفلتية‬RC2‫بمع‬ ‫وذلك‬ )( ‫دل‬2:1‫حتى‬ ‫الهرس‬ ‫ويجب‬ ) ‫م‬ /‫كجم‬‫الوصول‬ ‫إلى‬55‫عند‬ ‫المستخدم‬ ‫بواسطة‬ ‫العظمى‬ ‫الكثافة‬ ‫من‬ %135‫مئوية‬ ‫درجة‬‫على‬‫عن‬ ‫تزيد‬ ‫أال‬162‫أثناء‬ ‫مئوية‬ ‫درجة‬ .‫الفرد‬ 12.‫عن‬ ‫تقل‬ ‫ال‬ ‫لمدة‬ ‫الطريق‬ ‫يغلق‬24ً‫ا‬‫بات‬ ً‫ا‬‫منع‬ ‫يمنع‬ ،‫ذلك‬ ‫قبل‬ ‫عليه‬ ‫بالمرور‬ ‫يسمح‬ ‫وال‬ ‫النهائية‬ ‫الطبقة‬ ‫وضع‬ ‫بعد‬ ‫ساعة‬ ‫أحجام‬ ‫ذات‬ ‫فرادات‬ ‫األسفلت‬ ‫فرد‬ ‫في‬ ‫العمال‬ ‫استعمال‬‫الترنشات‬ ‫لسفلتة‬ ‫صغيرة‬‫األسواق‬ ‫في‬ ‫توفرت‬ ‫حيث‬‫عرض‬ ‫من‬ 411‫ميليمتر‬‫بطريقة‬ ‫الحديث‬ ‫مع‬ ‫القديم‬ ‫األسفلت‬ ‫مع‬ ‫واحد‬ ‫منسوب‬ ‫ذو‬ ‫متجانس‬ ‫سطح‬ ‫علي‬ ‫للحصول‬ ‫وذلك‬ ‫فوق‬ ‫فما‬ ‫حت‬ ‫عمودي‬ ‫وبشكل‬ ‫الحفر‬ ‫جوانب‬ ‫بقص‬ ‫األسفلت‬ ‫وضع‬ ‫قبل‬ ً‫ا‬‫تام‬ ً‫ا‬‫التزام‬ ‫المقاول‬ ‫يلتزم‬ ‫للتواصل‬ ‫بالنسبة‬ ‫أما‬ ، ‫سليمة‬‫ى‬ ‫ينكش‬‫أي‬ ‫من‬ ‫الجوانب‬ ‫وتنظيف‬ ‫السفلتة‬ ‫من‬ ‫متتابعين‬ ‫يومين‬ ‫عمل‬ ‫بين‬ ‫الحفر‬ ‫جوانب‬ ‫قص‬ ً‫ا‬‫أيض‬ ‫وكذلك‬ ‫جديد‬ ‫سطح‬ ‫ف‬ ‫عل‬ ‫يجب‬ ‫وكذلك‬ ‫الميكانيكية‬ ‫المعدات‬ ‫استعمال‬ ‫مع‬ ‫سائبة‬ ‫مواد‬‫ى‬‫أن‬ ً‫ا‬‫أيض‬ ‫المقاول‬‫بمادة‬ ‫الفواصل‬ ‫هذه‬ ‫بدهان‬ ‫يقوم‬ ‫اال‬( ‫التجمد‬ ‫السريع‬ ‫سفلت‬RC2‫و‬ )‫حت‬ ‫ذلك‬‫اال‬ ‫بين‬ ‫الترابط‬ ‫يتم‬ ‫ى‬‫سفلت‬.‫والجديد‬ ‫القديم‬ 13.‫إ‬:‫األرصفة‬ ‫عادة‬‫حيث‬‫في‬ ‫أو‬ ‫البالط‬ ‫في‬ ‫كان‬ ‫سواء‬ ‫ينتج‬ ‫األرصفة‬ ‫في‬ ‫خلل‬ ‫أي‬ ‫بإصالح‬ ‫يقوم‬ ‫بأن‬ ‫المقاول‬ ‫يلتزم‬ ‫و‬ ‫التالية‬ ‫األجزاء‬ ‫ازالة‬ ‫يتم‬ ‫حيث‬ ‫البردورات‬‫إلى‬ ‫وضعها‬ ‫إعادة‬‫االلتزام‬ ‫وكذلك‬ ‫عليها‬ ‫كانت‬ ‫التي‬ ‫الطبيعية‬ ‫حالتها‬ ‫ف‬ ‫خاصة‬ ‫بمواد‬ ‫المرصوفة‬ ‫المناطق‬ ‫بإعادة‬‫الطبيعة‬ ‫علي‬ ‫الموجودة‬ ‫المواد‬ ‫نوعية‬ ‫بنفس‬ ‫غيرها‬ ‫أو‬ ‫البلد‬ ‫وسط‬ ‫منطقة‬ ‫ي‬ ‫وعل‬‫ى‬.‫تنتج‬ ‫أضرار‬ ‫أي‬ ‫ويتحمل‬ ‫الزرع‬ ‫وأحواض‬ ‫والمزروعات‬ ‫األشجار‬ ‫علي‬ ‫المحافظة‬ ً‫ا‬‫أيض‬ ‫المقاول‬ 14.‫إ‬‫الموق‬ ‫عادة‬‫إلى‬ ‫ع‬‫الطبيعي‬ ‫حالته‬:‫ة‬ ‫عل‬‫ى‬‫القطط‬ ‫وعيون‬ ‫الدهانات‬ ‫ذلك‬ ‫في‬ ‫بما‬ ‫العمل‬ ‫بدء‬ ‫قبل‬ ‫عليها‬ ‫كان‬ ‫التي‬ ‫الطبيعية‬ ‫حالته‬ ‫الي‬ ‫الطريق‬ ‫اعادة‬ ‫المقاول‬ ‫الميكانيكية‬ ‫المعدات‬ ‫باستخدام‬ ‫وذلك‬ ‫والمخلفات‬ ‫األتربة‬ ‫جميع‬ ‫من‬ ً‫ا‬‫جيد‬ ‫الموقع‬ ‫بتنظيف‬ ‫المقاول‬ ‫ويلتزم‬ ‫وخالفه‬ ‫ال‬ ‫التصريح‬ ‫مدة‬ ‫خالل‬ ً‫ا‬‫نظيف‬ ‫الشارع‬ ‫يكون‬ ‫بحيث‬ ‫المعتمدة‬.‫له‬ ‫ممنوح‬
  • 14. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 14 of 45 SDCS-02-17 REV.01 6.4.5 Concrete: :‫كاآلتي‬ ‫الواحد‬ ‫المكعب‬ ‫للمتر‬ ‫الخرسانة‬ ‫خلطات‬ ‫تتكون‬ 1.( ‫العادية‬ ‫الخرسانة‬811‫م‬‫ليمتر‬2 ‫بحص‬‫ى‬،‫متدرج‬411‫م‬‫ليمتر‬2 ،‫نظيف‬ ‫رمل‬251‫أسمنت‬ ‫كجم‬.) 2.( ‫المسلحة‬ ‫الخرسانة‬811‫م‬‫ليمتر‬2 ‫بحصى‬،‫متدرج‬411‫م‬‫ليمتر‬2 ،‫نظيف‬ ‫رمل‬351‫أسمنت‬ ‫كجم‬.) 3.‫الحص‬ ‫من‬ ‫عينات‬ ‫تقديم‬‫ى‬‫و‬.‫المشرف‬ ‫المهندس‬ ‫قبل‬ ‫من‬ ‫لالعتماد‬ ‫الرمل‬ 1. All concrete surfaces in contact with ground shall be provided with two (2) layers of polyethylene vapor barrier / Each layer shall be six (6) Mil Thickness and in Accordance with ASTM-2103. 2. Concreting shall not be allowed without vibration at any time. 3. Curing of concrete shall be done by gunny bags for curing compound. 4. Cement shall be type 1 and in areas having water logging and salinity, Sulphate resistant cement type 5 may be used. SEC Engineer shall direct to the type of cement to be used. 5. Water shall be free from silt, organic matter, alkalies or other impurities. 6. The average grain size of sand is 0.35mm and the mud content shall not be more than 5%. 7. Forms to be used, these shall be sufficiently tight to prevent loss of mortar from concrete and shall be maintained rigidly in position until concrete has hardened enough to prevent damage by the removal. 8. If required by SEC Engineer, the concrete foundation sample test of Pole and anchor shall be carried out. The concrete sample to be crushed after seven days. 9. All lean concrete under reinforced base to be premixed from factory with 250 kg cement/m2 of concrete minimum strength 14 N/mm2 . 10. Lean concrete 15 cm thick shall be used all around the 15 Cm Dia P.V.C Pipes running underground. 11. All R.C.C to be premixed from factory with 350 kg cement/m2 of concrete minimum strength 21 N/mm2 (3000 P.S.I). 12. Sand should be coarse grained, clean and free from all foreign matter. 13. Aggregate should be well graded (19mm Max size), clean and free from all foreign matter. 14. All steel reinforcing bar to be high yield deformed type conforming to metric BS 444.9 Min yield strength 410 N/mm2 . 15. Reinforcement covers with in concrete to be as follows: Roof Slab 20 mm, Footing 60mm, others 40 mm.
  • 15. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 15 of 45 SDCS-02-17 REV.01 7 SOIL CLASSIFICATION: The soils are classified according to the A. B. Chance test probe method. The chance test probe is a mechanical tool to identify soil in a simple and quick way from the earth surface without core samples. To find out the soil bearing capacity the soil test probe is screwed into the soil. As it displaces the soil, probe torque readings are measured in inch-pounds on a torque gauge. The torque values obtained are translated into soil classification using the chance Soil Classification Data chart. The table below shows the soil classification as per A. B. Chance method and the relevant SEC soil classification to be followed. Class Description of Soil Type Probe Values Ibs (N-m) SEC Soil Type Classification 0 Sound hard rock, un-weathered N. A. Rock / Dense Soil 1 Very dense and / or cemented sands coarse gravel and cobbles 750-1600 (90-208) 2 Dense fine sand, very hard silts and clays (may be preloaded) 600-750 (78-98) 3 Dense clays, sands and gravel, hard silts and clays 500-600 (65-78) 4 Medium dense coarse sandy gravel, very stiff to had silts and clays 400-500 (52-65) Medium Soil 5 Medium dense coarse sand & sandy gravels, stiff to very stiff silts and clays 300-400 (39-52) 6 Loose to medium dense fine to coarse sand, firm to stiff clays & silt 200-300 (26-39) Loose Soil 7 Loose fine sand, alluvium, loess, soft firm clays, varied clays, fill 100-200 (13-26) Table 6: BREAKING CAPACITY OF SOIL IS 1.5 KG/CM2
  • 16. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 16 of 45 SDCS-02-17 REV.01 8 SOIL AND ASPHAILT TEST 1.6‫االسفلت‬ ‫قص‬ ‫و‬ ‫بالمنشار‬ ‫القص‬ ‫يكون‬ ‫أن‬ ‫يجب‬‫و‬ ‫تامة‬ ‫باستقامة‬‫عن‬ ‫يقل‬ ‫ال‬ ‫بعرض‬1‫و‬ ‫القطعيات‬ ‫في‬ ‫متر‬‫و‬ ‫الرئيسية‬ ‫الشوارع‬‫يتم‬ ‫بطول‬ ‫اإلسفلت‬ ‫من‬ ‫المتهتكة‬ ‫األجزاء‬ ‫قص‬5‫و‬ ‫متر‬‫قطعتين‬ ‫بين‬ ‫المسافة‬ ‫كانت‬ ‫إذا‬‫أ‬‫من‬ ‫قل‬5‫ف‬ ‫متر‬‫إ‬‫الجزء‬ ‫إزالة‬ ‫يتم‬ ‫نه‬ ‫الفاصل‬.‫بينهما‬ ‫و‬‫يستثن‬‫ى‬‫يكون‬ ‫أو‬ ‫مترين‬ ‫عن‬ ‫فيها‬ ‫الجدار‬ ‫عن‬ ‫الحفر‬ ‫بعد‬ ‫يقل‬ ‫التي‬ ‫الفرعية‬ ‫الشوارع‬ ‫في‬ ‫للعمل‬ ‫متر‬ ‫بعرض‬ ‫القص‬ ‫من‬ ‫ال‬ ‫بعد‬‫المواطن‬ ‫رصيف‬ ‫عن‬ ‫حفر‬‫أ‬.‫متر‬ ‫من‬ ‫قل‬ 1.6‫الترابية‬ ‫األعمال‬ 8.2.1‫الترابية‬ ‫المواقع‬ ‫جاهزية‬ ‫التي‬ ‫المواد‬ ‫جودة‬ ‫من‬ ‫التأكد‬ ‫خالل‬ ‫من‬ ‫الموقع‬ ‫جاهزية‬ ‫تحديد‬ ‫يمكن‬‫من‬ ‫خلوها‬ ‫من‬ ‫بالتأكد‬ ‫العمل‬ ‫لتنفيذ‬ ‫المقاول‬ ‫يستخدمها‬ ‫عن‬ ‫قطرها‬ ‫يزيد‬ ‫التي‬ ‫الكبيرة‬ ‫واألحجار‬ ‫الصخور‬5‫و‬ ‫سم‬‫و‬ ‫المخلفات‬ ‫من‬ ‫خلوها‬‫و‬ ‫العضوية‬ ‫المواد‬‫و‬ ‫األعشاب‬‫و‬ ‫الجذور‬ ‫و‬ ‫األشجار‬ ‫مخلفات‬‫و‬ ‫التدرج‬ ‫حيث‬ ‫من‬ ‫المطلوبة‬ ‫األمانة‬ ‫لمواصفات‬ ‫مطابقتها‬ ‫من‬ ‫بالتأكد‬ ‫كذلك‬‫و‬ ‫التصنيف‬‫الجودة‬‫و‬‫قابلية‬ ‫التماسك‬‫لالختب‬ ً‫ا‬‫جاهز‬ ‫الموقع‬ ‫ويعتبر‬‫التالي‬ ‫من‬ ‫التأكد‬ ‫بعد‬ ‫ار‬: a..‫المستخدمة‬ ‫المواد‬ ‫جودة‬ b..‫دكها‬ ‫المراد‬ ‫للطبقة‬ ‫الرصاصة‬ ‫وصول‬ ‫تمنع‬ ‫تكهفات‬ ‫وجود‬ ‫عدم‬ c.( ‫الطبقة‬ ‫سماكة‬‫إنه‬‫المواصفات‬ ‫حسب‬ ‫للسماكات‬ ‫مطابقة‬ ‫ا‬.) d..‫الطبقة‬ ‫استواء‬ e..‫الترابية‬ ‫الطبقة‬ ‫سماكة‬ ‫من‬ ‫التأكد‬ f.‫وجود‬ ‫عدم‬.‫مفككة‬ ‫تربة‬ g.‫وجود‬ ‫عدم‬.‫حبيبي‬ ‫انفصال‬ h..‫المخلفات‬ ‫من‬ ‫الموقع‬ ‫نظافة‬ i..‫الحفرية‬ ‫أجزاء‬ ‫جميع‬ ‫د‬ 8.2.2‫المواد‬ ‫جودة‬ ‫اختبارات‬ ‫تكرار‬ ‫معدل‬‫الترابية‬ ‫ع‬ ‫يقل‬ ‫ال‬ ‫أن‬ ‫يجب‬‫ا‬ ‫لى‬‫لمواد‬)‫(تشوين‬ ‫تخزين‬ ‫وجود‬ ‫أو‬ ‫للمواد‬ ‫واحد‬ ‫مصدر‬ ‫استخدام‬ ‫عند‬ ‫أسبوعين‬ ‫لكل‬ ‫واحدة‬ ‫عينة‬ ‫عن‬ ‫ف‬ ‫للتآكل‬ ‫انجلوس‬ ‫لوس‬ ‫واختبار‬ ‫التحمل‬ ‫لنسبة‬ ‫كاليفورنيا‬ ‫حالة‬ ‫في‬ ‫أما‬ ,‫المواد‬ ‫وتصنيف‬ ‫التدرج‬ ‫اختبار‬ ‫حالة‬ ‫في‬ ‫كافي‬‫إ‬‫يتم‬ ‫نه‬ ‫ع‬‫األكثر‬ ‫(على‬ ‫شهر‬ ‫كل‬ ‫االختبار‬ ‫مل‬‫و‬ )‫أخ‬ ‫يتم‬‫الحاالت‬ ‫في‬ ‫واحدة‬ ‫عينة‬ ‫ذ‬‫التالية‬: a.. ‫المواد‬ ‫مصدر‬ ‫تغير‬ ‫كلما‬ b.‫أو‬ ‫الخواص‬ ‫أو‬ ‫اللون‬ ‫كتغير‬ ‫المواد‬ ‫مصدر‬ ‫تغير‬ ‫على‬ ‫دالئل‬ ‫ظهرت‬ ‫كلما‬.‫النسيج‬ c.( ‫خمسمائة‬ ‫عن‬ ‫العمل‬ ‫كمية‬ ‫زادت‬ ‫كلما‬511.‫المستمرة‬ ‫األعمال‬ ‫من‬ ‫مكعب‬ ‫متر‬ ) 8.2.3‫لألعمال‬ ) ‫الدك‬ ( ‫التنفيذ‬ ‫جودة‬ ‫تكرار‬ ‫معدل‬‫الترابية‬ ‫للكثافة‬ ‫االختبارات‬ ‫عدد‬ ‫تحديد‬ ‫يمكن‬: ‫التالية‬ ‫للقواعد‬ ‫وفقا‬ ‫إجراؤها‬ ‫الواجب‬ ‫الحلقية‬ a.‫إ‬‫لكل‬ ‫واحد‬ ‫اختبار‬ ‫جراء‬151‫وجود‬ ‫عند‬ ‫أو‬ ‫الحفر‬ ‫اتجاهات‬ ‫من‬ ‫اتجاه‬ ‫لكل‬ ‫المتصلة‬ ‫األعمال‬ ‫من‬ ‫طبقة‬ ‫لكل‬ ‫متر‬ ‫تغير‬‫الحفر‬ ‫اتجاه‬ ‫(تغير‬ ‫بالحفر‬ ‫واحد‬.) b.‫العمل‬ ‫كان‬ ‫إذا‬‫أ‬‫من‬ ‫طوال‬ ‫قل‬151‫االتجاه‬ ‫في‬ ‫واحد‬ ‫تغير‬ ‫من‬ ‫أكثر‬ ‫هنا‬ ‫كان‬ ‫أو‬ ‫متر‬‫ف‬‫إن‬‫واحد‬ ‫اختبار‬ ‫عمل‬ ‫يتم‬ ‫ه‬ .‫اتجاه‬ ‫لكل‬ ‫طبقة‬ ‫لكل‬ ‫موقع‬ ‫لكل‬
  • 17. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 17 of 45 SDCS-02-17 REV.01 8.2.4( ‫الردم‬ ‫طبقات‬ ‫الجودة‬ ‫متطلبات‬Back Filling) ‫الخاصية‬‫المتطلبات‬‫المواصفة‬ ‫التربة‬ ‫تصنيف‬A-1-a or A-1-b or A-2-4(AASHTO–M145) ‫نسبة‬‫الد‬-( ‫العظمى‬ ‫الجافة‬ ‫الكثافة‬‫ادنى‬ ‫حد‬))%(55(AASHTO–T180-74) ‫تحمل‬ ‫نسبة‬‫كاليفورنيا‬(‫ادنى‬ ‫حد‬))%(51(AASHTO–D1883) ( ‫الرملي‬ ‫المكافئ‬‫حد‬‫أ‬‫دنى‬)25(AASHTO–176-73) ( ‫اللدونة‬ ‫دليل‬‫حد‬‫أ‬‫قصى‬)6(AASHTO–T90-80) )‫انجلوس‬ ‫(لوس‬ ‫التأكل‬ ‫بسبب‬ ‫النقص‬‫حد‬‫أ‬)%( ‫قصى‬51(AASHTO–D1883) ‫جدول‬7Back Filling: 8.2.5‫الركامية‬ ‫األساس‬ ‫تحت‬ ‫ما‬ ‫لطبقة‬ ‫الجودة‬ ‫متطلبات‬(Sub Base) ‫الخاصية‬‫المتطلبات‬‫المواصفة‬ ( ‫الطبقة‬ ‫سماكة‬‫حد‬)‫أدنى‬15+ ‫سم‬15‫سم‬ ‫التربة‬ ‫تصنيف‬A-1-a or A-1-b ( ‫السيولة‬ ‫حد‬‫حد‬)‫أقصى‬25(ASTM –D4318) ‫اللدونة‬ ‫دليل‬)‫أقصى‬ ‫(حد‬6(AASHTO –T90-80) ‫التأكل‬ ‫نسبة‬)‫أقصى‬ ‫(حد‬51(AASHTO –T96-77) ‫الرملي‬ ‫المكافئ‬)‫أدنى‬ ‫(حد‬25(AASHTO –176-73) ‫تحمل‬ ‫نسبة‬‫كاليفورنيا‬)‫أدنى‬ ‫(حد‬)%(65(AASHTO –D1883) ‫ال‬ ‫نسبة‬)%( ‫المثالية‬ ‫الرطوبة‬ ‫نسبة‬ ‫من‬ ‫رطوبة‬±2 )%( ‫المعدلة‬ ‫بروكتر‬ ‫بموجد‬ ‫القصوى‬ ‫الجافة‬ ‫الكثافة‬ ‫من‬ ‫الد‬ ‫نسبة‬111(AASHTO –T180-74) ‫جدول‬8:Sub Base 8.2.6) ‫السريعة‬ ‫(الطرق‬ ‫الركامي‬ ‫األساس‬ ‫لطبقة‬ ‫الجودة‬ ‫متطلبات‬Aggregate Base Course ‫الخاصية‬‫المتطلبات‬‫المواصفة‬ ‫تحمل‬ ‫نسبة‬‫كاليفورنيا‬)%( ‫ادنى‬ ‫حد‬ ,81(AASHTO –D1883) ‫اقصى‬ ‫حد‬ )‫(االصالة‬ , ‫والنقص‬ ‫الصوديوم‬ ‫كبريتات‬ ‫سالمة‬12 ‫التأكل‬ ‫بسبب‬ ‫النقص‬(‫حد‬‫أ‬‫قصى‬)45(AASHTO –T96-77) ‫السيولة‬ ‫حد‬(‫حد‬‫أ‬‫قصى‬)25(AASHTO –T89-80) ‫اللدونة‬ ‫دليل‬(‫حد‬‫أ‬‫قصى‬)6(AASHTO –T90-80) )%( ‫المعدلة‬ ‫بروكتر‬ ‫بموجد‬ ‫القصوى‬ ‫الجافة‬ ‫الكثافة‬ ‫من‬ ‫الد‬ ‫نسبة‬111(AASHTO–T180-74) ‫جدول‬5:Aggregate Base Course
  • 18. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 18 of 45 SDCS-02-17 REV.01 1.6‫اال‬ ‫األعمال‬‫سفلتية‬ 8.3.1‫جاهزية‬ ‫تحديد‬‫لالختبارات‬ ‫اإلسفلتية‬ ‫األعمال‬ :‫التالية‬ ‫النقاط‬ ‫لجميع‬ ‫لإلسفلت‬ ‫البصري‬ ‫الفحص‬ ‫خالل‬ ‫من‬ ‫التحقق‬ ‫بعد‬ ‫اإلسفلت‬ ‫الختبارات‬ ‫الموقع‬ ‫جاهزية‬ ‫تحديد‬ ‫يمكن‬ a..‫اختبارها‬ ‫المراد‬ ‫للطبقة‬ ‫السفلتة‬ ‫عمل‬ ‫من‬ ‫واالنتهاء‬ ‫اإلسفلت‬ ‫قص‬ ‫استقامة‬ b..‫تماما‬ ‫بالجديد‬ ‫القديم‬ ‫اإلسفلت‬ ‫منسوب‬ ‫تساوي‬ c.‫اإل‬ ‫ربط‬ ‫جودة‬.‫بالجديد‬ ‫القديم‬ ‫سفلت‬ d..) ‫حصوي‬ ‫تجمع‬ ( ‫اإلسفلت‬ ‫في‬ ‫خشونة‬ ‫وجود‬ ‫عدم‬ e..‫باإلسفلت‬ ‫نعومة‬ ‫وجود‬ ‫عدم‬ f..‫والمظهر‬ ‫الشكل‬ ‫حيث‬ ‫من‬ ‫العام‬ ‫اإلسفلت‬ ‫مستوى‬ ‫جودة‬ g..‫المعدات‬ ‫بسبب‬ ‫اإلسفلت‬ ‫في‬ ‫انكسارات‬ ‫أو‬ ‫خدوش‬ ‫وجود‬ ‫عدم‬ h.‫هبوط‬ ‫وجود‬ ‫عدم‬.‫التنفيذ‬ ‫بسبب‬ ‫اإلسفلت‬ ‫بجانب‬ ‫قص‬ ‫أو‬ i.‫حيث‬ :‫كالتالي‬ ‫اإلسفلت‬ ‫سماكة‬ ‫من‬ ‫التأكد‬‫القديم‬ ‫اإلسفلت‬ ‫يكون‬ ‫أن‬ ‫حالة‬ ‫وفي‬ ‫القديم‬ ‫اإلسفلت‬ ‫لسماكة‬ ‫مساوي‬ ‫يكون‬ ‫من‬ ‫اقل‬6‫أو‬ ‫الفرعية‬ ‫للشوارع‬ ‫سم‬8‫بـ‬ ‫يكتفي‬ ‫فانه‬ ‫الرئيسية‬ ‫للشوارع‬ ‫سم‬6‫و‬ ‫الفرعية‬ ‫للشوارع‬ ‫سم‬8‫سم‬ ‫من‬ ‫أكثر‬ ‫القديم‬ ‫اإلسفلت‬ ‫سماكة‬ ‫كانت‬ ‫إذا‬ ‫أما‬ ،‫الرئيسية‬ ‫للشوارع‬15‫بسماكة‬ ‫إسفلت‬ ‫طبقة‬ ‫بوضع‬ ‫فيكتفى‬ ‫سم‬15‫سم‬ ‫عن‬ ‫تزيد‬ ‫ال‬ ‫بسماكة‬ ‫طبقات‬ ‫على‬ ‫اإلسفلت‬ ‫وضع‬ ‫ويتم‬ ،‫فقط‬6‫بنفس‬ ‫السفلتة‬ ‫عملية‬ ‫تتم‬ ‫أن‬ ‫ويجب‬ ،‫طبقة‬ ‫لكل‬ ‫سم‬ ‫الـ‬ ‫من‬ ‫الصقة‬ ‫بطبقة‬ ‫السطح‬ ‫رش‬ ‫فيجب‬ ‫اليوم‬ ‫بنفس‬ ‫الطبقات‬ ‫تنفذ‬ ‫لم‬ ‫إذا‬ ‫أما‬ ،‫اليوم‬RC2. 8.3.2‫اإلسفلتية‬ ‫المواد‬ ‫جودة‬ ‫اختبار‬ ‫معدل‬ ‫اخ‬ ‫يجب‬‫الخلطة‬ ‫حرارة‬ ‫درجة‬ ‫من‬ ‫والتأكد‬ ‫الخلطات‬ ‫أنواع‬ ‫من‬ ‫نوع‬ ‫لكل‬ ‫خالطة‬ ‫لكل‬ ‫مقاول‬ ‫لكل‬ ‫عمل‬ ‫يوم‬ ‫لكل‬ ‫عينة‬ ‫ذ‬ ( ‫الحرارة‬ ‫درجة‬ ‫تكون‬ ‫بحيث‬ ‫الموقع‬ ‫في‬ ‫االسفلتية‬135-163.‫مئوية‬ ‫درجة‬ ) 8.3.3‫اإلسفلت‬ ‫دك‬ ‫نسبة‬ ‫اختبار‬ ‫تكرار‬ ‫ي‬‫كالتالي‬ ‫الد‬ ‫نسبة‬ ‫اختبار‬ ‫عمل‬ ‫تم‬: a.‫في‬ ‫الحفرية‬ ‫كانت‬ ‫إذا‬‫اتجاه‬‫لكل‬ ‫واحد‬ ‫اختبار‬ ‫عمل‬ ‫يتم‬ ‫واحد‬311‫طبقة‬ ‫لكل‬ ‫اليومي‬ ‫العمل‬ ‫من‬ ‫أقل‬ ‫أو‬ ‫طولي‬ ‫متر‬ .‫متصلة‬ b.‫طبقة‬ ‫لكل‬ ‫واحد‬ ‫اختبار‬ ‫اجراء‬ ‫فيجب‬ ) ‫االتجاهات‬ ‫في‬ ‫واحد‬ ‫تغير‬ ‫من‬ ‫أكثر‬ ( ‫االتجاهات‬ ‫متغيرة‬ ‫الحفرية‬ ‫كانت‬ ‫إذا‬ ‫لكل‬ ‫الحفرية‬ ‫مسار‬ ‫اتجاهات‬ ‫من‬ ‫اتجاه‬ ‫كل‬ ‫في‬311‫نفس‬ ‫في‬ ‫متصل‬ ‫عمل‬ ‫لكل‬ ‫فأقل‬ ‫متر‬‫اختبار‬ ‫عمل‬ ‫أو‬ ‫اليوم‬ .‫التصريح‬ ‫نطاق‬ ‫ضمن‬ ‫منفصل‬ ‫جزء‬ ‫لكل‬ ‫واحد‬ c.‫الحي‬ ‫ولنفس‬ ‫اليوم‬ ‫نفس‬ ‫في‬ ‫تعمل‬ ‫والتي‬ ‫المشتركين‬ ‫وصالت‬ ‫من‬ ‫مواقع‬ ‫خمس‬ ‫عدد‬ ‫لكل‬ ‫واحد‬ ‫اختبار‬ ‫عمل‬ ‫يتم‬ .‫واحدة‬ ‫خالطة‬ ‫ومن‬ ‫الخلطة‬ ‫نوع‬ ‫ومن‬
  • 19. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 19 of 45 SDCS-02-17 REV.01 8.3.4‫االختبارات‬ ‫تكرار‬ ‫معدل‬ ‫جود‬ ‫متطلبات‬‫ة‬‫االسفلت‬: ‫الخاصية‬‫تدرج‬3‫تدرج‬2‫تدرج‬1 )‫(كجم‬ ‫أدنى‬ ‫حد‬ ‫الثبات‬111111111111 ( ‫االنسياب‬‫مليمتر‬)2-42-42-4 ‫ال‬‫أنجلوس‬ ‫(لوس‬ ‫للركام‬ ‫بالتأكل‬ ‫نقص‬)(%)‫عن‬ ‫يزيد‬ ‫ال‬35‫شتو‬ً‫ا‬ ‫مواصفة‬ (T-96-77) )%( ‫الخلطة‬ ‫في‬ ‫الفراغات‬ ‫نسبة‬3-54-64-6 )%( ‫باإلسفلت‬ ‫المملوءة‬ ‫الفراغات‬ ‫نسبة‬‫الحجم‬ ‫حسب‬ ‫على‬ ‫تختلف‬‫للركام‬ ‫االسمي‬ ‫األقصى‬ ( ‫االسفلت‬ ‫نسبة‬71/61‫بالوزن‬ )(%)4-64-64-6 ‫حرارة‬ ‫بدرجة‬ ‫الثبات‬ ‫فقدان‬ ‫نسبة‬61)%( ‫مئوية‬ ‫درجة‬‫عن‬ ‫تزيد‬ ‫ال‬25 )%( ‫الد‬ ‫نسبة‬53–56‫العظمى‬ ‫الكثافة‬ ‫من‬Gmm )%( ‫الركامية‬ ‫للمواد‬ ‫الرملي‬ ‫المكافئ‬‫عن‬ ‫يقل‬ ‫ال‬61‫شتو‬ً‫ا‬ ‫(مواصفة‬T-176) ‫جدول‬11‫السطحية‬ ‫االسفلت‬ ‫لطبقة‬ ‫الجودة‬ ‫متطلبات‬ :. ‫و‬ ‫قطر‬‫المنخل‬ ‫رقم‬ % ‫المارة‬ ‫المئوية‬ ‫النسبة‬ ‫ج‬ ‫صنف‬ ‫التدرج‬(53,12‫مل‬‫ي‬‫م‬)‫تر‬‫الحد‬ ‫األ‬‫اإل‬ ‫قصى‬‫سمي‬ ‫ب‬ ‫صنف‬ ‫التدرج‬2(15‫مل‬‫ي‬‫م‬)‫تر‬‫الحد‬ ‫األ‬‫اإل‬ ‫قصى‬‫سمي‬ ‫ج‬ ‫صنف‬ ‫التدرج‬1(15‫مل‬‫ي‬‫م‬)‫تر‬ ‫األ‬ ‫الحد‬‫اإل‬ ‫قصى‬‫سمي‬ 15‫مليمتر‬(3/4)‫انش‬-111111 12.5‫مليمتر‬(1/2)‫انش‬11151-11175–51 5.5‫مليمتر‬(3/8)‫انش‬51-11178-8364–75 4.75‫مليمتر‬‫(رقم‬4)54-6846–6141–56 2‫مليمتر‬‫(رقم‬11)32–4631–4223–37 1.425‫مليمتر‬‫(رقم‬41)14–2514–257–21 1.18‫مليمتر‬‫(رقم‬81)8–168–165–13 1.175‫مليمتر‬‫(رقم‬211)3-73-73–8 ‫جدول‬11.‫السطحية‬ ‫االسفلت‬ ‫لطبقة‬ ‫التدرجة‬ ‫متطلبات‬ : ‫الخاصية‬‫تدرج‬3‫تدرج‬2‫تدرج‬1 )‫(كجم‬ ‫أدنى‬ ‫حد‬ ‫الثبات‬111111111111 )‫(مم‬ ‫االنسياب‬2-42-4 ) ‫أنجلوس‬ ‫لوس‬ ( ‫للركام‬ ‫بالتأكل‬ ‫النقص‬(%)‫عن‬ ‫يزيد‬ ‫ال‬35‫شتو‬ً‫ا‬ ‫مواصفة‬ (T-96-77) )%( ‫الخلطة‬ ‫في‬ ‫الفراغات‬ ‫نسبة‬5-75-75-7 )%( ‫باألسفلت‬ ‫المملوءة‬ ‫الفراغات‬ ‫نسبة‬‫وتتراوح‬ ‫للركام‬ ‫االسمي‬ ‫األقصى‬ ‫الحجم‬ ‫حسب‬ ‫على‬ ‫تختلف‬ ( ‫بين‬61-75)% ( ‫االسفلت‬ ‫نسبة‬71/61‫بالوزن‬ )(%)3-63-63-6
  • 20. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 20 of 45 SDCS-02-17 REV.01 ‫الثبات‬ ‫فقدان‬ ‫نسبة‬‫حرارة‬ ‫بدرجة‬61)%( ‫مئوية‬ ‫درجة‬‫عن‬ ‫تزيد‬ ‫ال‬25 )%( ‫الد‬ ‫نسبة‬52–55‫العظمى‬ ‫الكثافة‬ ‫من‬Gmm )%( ‫الركامية‬ ‫للمواد‬ ‫الرملي‬ ‫المكافئ‬‫عن‬ ‫يقل‬ ‫ال‬61‫شتو‬ً‫ا‬ ‫(مواصفة‬T-176) ‫جدول‬12‫االسفلتي‬ ‫االساس‬ ‫لطبقة‬ ‫الجودة‬ ‫متطلبات‬ :. ‫و‬ ‫قطر‬‫المنخل‬ ‫رقم‬ % ‫المارة‬ ‫المئوية‬ ‫النسبة‬ ( ‫التدرج‬3)25‫مم‬ ‫األ‬ ‫الحد‬‫قصى‬ ‫اإل‬‫سمي‬ ( ‫التدرج‬2)25‫مم‬ ‫األ‬ ‫الحد‬‫قصى‬ ‫اإل‬‫سمي‬ ‫ج‬ ‫صنف‬ ( ‫التدرج‬1)37.5‫مم‬ ‫األ‬ ‫الحد‬‫اإل‬ ‫قصى‬‫سمي‬ 37.5‫مليمتر‬(1.5)‫انش‬--111 25‫مليمتر‬(1)‫انش‬11111175–51 15‫مليمتر‬(3/4)‫انش‬51-11175-5165-81 12.5‫مليمتر‬(1/2)‫انش‬78–5375–8151–71 5.5‫مليمتر‬(3/8)‫انش‬57–7255–6545–62 4.75‫مليمتر‬‫(رقم‬4)43–5835–6131–46 2‫مليمتر‬‫(رقم‬11)28–4321–3518–33 1.425‫مليمتر‬‫(رقم‬41)13–287–215–18 1.18‫مليمتر‬‫(رقم‬81)-5-253–13 1.175‫مليمتر‬‫(رقم‬211)3-73-72-5 ‫جدول‬13:‫االسفلتي‬ ‫االساس‬ ‫لطبقة‬ ‫التدرج‬ ‫متطلبات‬. ‫واألرصفة‬ ‫للبالط‬ ‫البصري‬ ‫الفحص‬ ‫تنفيذها‬ ‫جودة‬ ‫مراعاة‬ ‫ويجب‬ ‫والمنسوب‬ ‫والمستوى‬ ‫الجودة‬ ‫وبنفس‬ ‫السابق‬ ‫البالط‬ ‫نوعية‬ ‫نفس‬ ‫من‬ ‫البالط‬ ‫نوعية‬ ‫تكون‬ ‫أن‬ ‫يجب‬ ‫قصه‬ ‫تم‬ ‫قد‬ ‫البالط‬ ‫لواحق‬ ‫أن‬ ‫من‬ ‫التأكد‬ ‫ويتم‬.‫الحفرية‬ ‫أجزاء‬ ‫لجميع‬ ‫المنشار‬ ‫بواسطة‬ ‫االسفلتي‬ ‫السائل‬ ‫رش‬ ‫تقييم‬MC1‫و‬‫بـ‬ ‫القديم‬ ‫اإلسفلت‬ ‫أطراف‬ ‫دهن‬RC2 ‫و‬ ‫منتظم‬ ‫بشكل‬ ‫تم‬ ‫سطحها‬ ‫جفاف‬ ‫بعد‬ ‫الترابية‬ ‫الطبقة‬ ‫على‬ ‫االسفلتي‬ ‫السائل‬ ‫رش‬ ‫أن‬ ‫من‬ ‫التأكد‬ ‫يجب‬( ‫بمعدل‬65,1-75,1) ‫لتر/م‬2‫لمادة‬MC1‫و‬ ،‫القص‬ ‫استقامة‬ ‫من‬ ‫التأكد‬ ‫كذلك‬‫و‬ ‫االسفلتي‬‫و‬ ‫نظافته‬‫قص‬15‫ا‬ ‫جانبي‬ ‫كال‬ ‫من‬ ‫سم‬‫الحفرية‬ ‫سفلت‬ ‫و‬ ‫الرئيسية‬ ‫للشوارع‬11‫و‬ ‫الفرعية‬ ‫للشوارع‬ ‫سم‬‫أ‬‫دهن‬ ‫تم‬ ‫نه‬RC2‫ال‬ ‫األطراف‬ ‫على‬‫ل‬ ‫داخلية‬‫و‬ ‫اإلسفلت‬ ‫قص‬‫و‬ ‫منتظم‬ ‫بشكل‬ ( ‫عن‬ ‫يزيد‬ ‫ال‬ ‫بمعدل‬25,1‫لتر/م‬ )2‫لمادة‬RC2. ‫للشوارع‬ ‫القطعيات‬ ‫القطعيات‬ ‫اختبار‬ ‫عمل‬ ‫يتم‬‫على‬‫الترابية‬ ‫الطبقات‬ ‫من‬ ‫طبقة‬ ‫لكل‬ ‫اختبار‬ ‫عمل‬ ‫يتم‬ ‫بحيث‬ ‫الحفر‬ ‫بقية‬ ‫عن‬ ‫منفصل‬ ‫بشكل‬ ‫طبقات‬ ‫و‬‫اال‬‫الحركة‬ ‫ذات‬ ‫الشوارع‬ ‫تعتبر‬ ‫أن‬ ‫على‬ ‫سفلتية‬‫الدائبة‬.‫الطوارئ‬ ‫أعمال‬ ‫ضمن‬
  • 21. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 21 of 45 SDCS-02-17 REV.01 9 Specification of Installation of Duct Bank at Road Crossing 9.1 General: This specification gives requirements for installation of underground duct banks at road crossings The. duct bank consists of PVC conduits direct buried in compacted sand or encased in concrete. 9.2 Excavation: The excavation for a duct bank shall be completed to its full length at crossing before any conduit is laid. Possible obstructions might be encountered which would make it difficult to maintain proper grading or drainage of the duct run. ‫الحفر‬ ‫مسار‬ ‫شارع‬ ‫شارع‬ ‫الحالة‬ ‫هذه‬ ‫في‬ ‫اختبارات‬ ‫ثالثة‬ ‫احتساب‬ ‫يتم‬ ‫شارع‬ ‫إلى‬ ‫شارع‬ ‫من‬ ‫الحفر‬ ‫اتجاه‬ ‫تغير‬ :) 6 ( ‫رقم‬ ‫مسار‬ .) ‫فرعي‬ ‫أو‬ ‫رئيس‬ ( ‫الشارع‬ ‫ونوعية‬ ‫العمق‬ ‫حسب‬ ‫دك‬ ‫طبقة‬ ‫لكل‬ ‫شارع‬ ‫ثالثة‬ ‫احتساب‬ ‫يتم‬ ‫الحالة‬ ‫هذه‬ ‫في‬ ‫جانب‬ ‫إلى‬ ‫جانب‬ ‫من‬ ‫الواحد‬ ‫الشارع‬ ‫في‬ ‫الحفر‬ ‫تغير‬ : ) 6 ( ‫رقم‬ ‫مسار‬ ‫طبق‬ ‫لكل‬ ‫اختبارات‬.‫الشارع‬ ‫ونوعية‬ ‫العمق‬ ‫حسب‬ ‫دك‬ ‫ة‬ ‫الحفر‬ ‫مسار‬ ‫شارع‬‫واحد‬
  • 22. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 22 of 45 SDCS-02-17 REV.01 Asphalt shall be cut by a motor driven saw. Excavated materials shall be immediately removed from site and hauled to an approved municipal dumping yard. Manual digging shall be used at locations where existing underground facilities (e.g. water pipes, sewage lines, cables etc.) are encountered. Existing facilities uncovered during excavation shall be protected, shored, braced, and supported, as necessary. All protective covers, warning tapes, position markers, etc. pertaining to existing underground utilities shall be preserved during excavation and restored in position during backfilling. The excavation shall be properly sheeted and braced, as necessary, to prevent the sides from caving in due to soft or sandy soil, traffic vibration, etc. All excavations exceeding 1.5 meter depth shall be properly sheeted and braced. The depth of the duct bank shall be in accordance with the requirement of the municipality or ministry of communication ( as applicable ) and it shall provide a minimum cover of 500 mm. The excavation for the duct banks shall provide a minimum grade or slope of 250 mm per 100 m. The bottom of the excavation shall be carefully finished to the exact grade required for the duct bank and shall have a minimum bearing capacity of 140 kpa. The width of the duct bank shall be as per the figures Multiple layer duct banks shall be constructed if there is any difficulty to temporarily cover with steel plate the very wide ( greater than 1300 mm ) open duct banks. Where the earth walls of the excavation are firm enough to sustain themselves, they may be used to serve as the forms for a concrete encased duct bank. 9.3 Duct Bank construction General: Direct buried concrete encased duct banks shall be constructed with Type DB PVC conduit. In laying PVC conduit, each piece of conduit shall be inspected for breakage. Where jointing conduits, the conduit end without socked only shall be coated with solvent cement and the conduits joined with a twisting motion to spread the cement. As far as possible, conduits shall be so installed that the cable will enter and leave through the socket ends of the conduits. In case of difficulty in arranging this, a straight coupling shall be installed on the plain end of the conduit and cable shall be pulled through this coupling. Direct buried duct bank: Constructing a direct buried duct bank shall consist of installing conduits with compacted sand around the conduits. The sand shall be clean, fine, free from organic matter, and
  • 23. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 23 of 45 SDCS-02-17 REV.01 compacted in 150 mm layers to 85%. Relative density ( ASTM-D-2049 ) at a moisture content not less than 80%. Reinforced concrete bulkheads ( precast or cast at site ) shall be installed at each end of the duct bank. Bulkheads shall be as per the figures concrete shall conform to the specification of section 6 of this clause and shall be colored or painted red on the top of the surface. Concrete encased duct bank: Construction of a concrete encased duct bank consists of installing the conduits on spacers or fixing them to the reinforcing steel bars driven inside the ground along the trench length and pouring the concrete encasement. Spacers or bars for supporting the conduit are installed at intervals or approximately 2.5 meters. If the concrete mix is sloppy it may be necessary to weight or brace the duct assembly to prevent it from floating. Sandbag or other weights can be placed over the conduit spacers. This is not required if conduits are already fixed to the reinforcing steel bars. If it is necessary to interrupt the concrete pouring for any appreciable time, as from one work day until the next, the joint between the pouring shall be made as near vertical as possible and shall be reinforced with 12 mm dia. Concrete reinforcing bars which extend in to the concrete at least 600 mm on each side of the joint. Bars shall be placed at each corner of the duct bank and they shall have a minimum cover of 80 mm of concrete. Concrete for duct bank construction shall conform to the specification given on section 6 and shall be colored or painted red on the top surface. 9.4 Backfilling and reinstatement: Backfilling of the duct back excavation shall be in accordance of the requirements of the municipality or ministry of communications (as applicable). If not specified, backfill shall be clean, fine sand, free from organic matter, compacted in 250 mm layers to 95% maximum dry density ( modified Proctor ). Warning tape shall be laid in the backfill between the duct bank and the base layer of the roadway. The spacing between the duct bank and the warning tape shall be as large as site conditions permit up to 500 mm. Reinstatement of sidewalks, streets, and roads shall be in accordance with the specification of municipality or ministry of communications ( as applicable ). 9.5 Duct cleaning and inspection: On completion of a duct bank, a test mandrel and wire brush cleaner shall be pulled through each conduit. The test mandrel shall be 6mm less in diameter than the nominal inside diameter of the conduit while the wire brush shall be slightly larger than the conduit. The testing and cleaning of a concrete encased duct bank shall be done the day after the concrete has been poured to eliminate any concrete which may have seeped in to the ducts.
  • 24. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 24 of 45 SDCS-02-17 REV.01 A nylon pull line shall be installed in each conduit after cleaning. All conduits shall remain plugged until cables are installed through them. 9.6 Concrete Specification: Portland Cement: Type V ( Sulphate resistant ) conforming to ASTM specification C-150 Aggregates: All Aggregates shall conform to ASTM specification C-33 and the following: a. Coarse aggregate – round maximum sized 20 mm. b. Fine Aggregate – percent of total, 40% to 55%; fineness modulus, 2.6 to 2.9. Water: Must be potable, clean and free from deleterious amounts of acids, alkalis or organic materials . salt water or sea water shall not be used. Strength: Minimum strength, 21.0 MPA ( 3,000 psi ) in 28 days. Slump: Shall not exceed 150 mm ( based on standard 150 mm dia. test cylinder ). Ready mixed concrete: Ready mixed concrete shall be mixed in an approved plant, using approved materials as specified. Water shall be added at the mixing plant except where haul is greater than one hour from mixing plant, in which case water shall be added at the jobsite. Job mixed concrete: Job mixed concrete shall be mixed in an approved manner, using approved materials as specified. Each batch must be mixed not less than one minute after all materials are in mixer. Reservations: SEC reserves the right to inspect and/or test all materials and equipment concerned with the concrete covered by this specification.
  • 25. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 25 of 45 SDCS-02-17 REV.01 10 General notes on Medium voltage HDD works: 10.1 All dimensions are in millimeters unless indicated otherwise noted. 10.2 The contractor shall submit a directional drilling package containing the justification for the proposed cable formation/ spacing, PVC conduit , fill compound ( if any ) and pipe size that will attain the required cable MVA rating for technical review and approval of SEC. 10.3 Site condition shall be investigated by the contractor. The contractor shall take full responsibility for maintaining and protecting all existing site utilities, soil condition and stability. 10.4 It is contractor’s responsibility to provide and install a de- watering system if found necessary due to high ground water table. The de watering system shall be reviewed and approved by SEC. contractor shall be also responsible for disposing off the ground water using water tankers. 10.5 PVC conduit shall be terminated with end bells. 10.6 A minimum of one circuit run of spare ducts shall be provided in every directional drilling installation. All spare ducts shall have a 13 mm (112’’1 Nylon ) rope installed inside all cable ducts shall be sealed with the use of duct sealing units. 10.7 Test mandrel ( 6mm less in diameter than the normal inside diameter of the duct ) and wire brush cleaner ( 6mm larger than the duct ) shall be pulled thru to each duct. A nylon pull line ( 13 mm diameter ) should be installed in each duct line ( power and communication ) after cleaning, construction drawings which indicate duct line, length and routing shall be verified and field noted in conjunction with duct testing operation. 10.8 The two ends of every directional drilling installation shall be marked by a sign post , warning sign applicable arrow sign, another log, a voltage rating plate shall also be provided, the material, size, paint and color of the voltage rating plate shall be identical to that of the arrow signs. 10.9 Upon completion of duct bank installation, the contractor shall provide As- built drawings, showing duct bank location and details to include in the duct bank location mark. Location shall be referenced from permanent ( existing ) objects. 10.10 End cups shall be provided for all spare ducts. 10.11 Directional drilling shall be used only if other alternative means of crossing are not possible. 10.12 Ampacity adequacy shall be verified where directional drilling is required. 10.13 backfilling _and reinstatement shall be in accordance of the requirements of appropriate authority. 10.14 The process of directional drilling shall be as per contractor’s methods of construction procedures and requirements.
  • 26. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 26 of 45 SDCS-02-17 REV.01 10.15 The number of directional drilling conduits shall also depend on required number of cable circuits and available right of wa 10.16 The details of the directional drilling method tone with description of the machinery that will. Be used shall be submitted for company review and approval. the contractor shall explain in details how the required clearance between each circuit, other circuit and other utilities will be maintained. 10.17 Prior to commencement of any directional drilling work, the contractor shall get approval and permission from the concerned row approving agencies. 10.18 All the above requirements shall be submitted for company review and approval. 10.19 The joints of the pipes shall be flexible. the pull applied on_ the curved pipes shall be prescribed by the manufacturer and contractor has to work within these limits. 10.20 The drilling angle from the horizontal shall be with respect to property of site material. 10.21 The contractor ‘s responsible for damaging any existing underground facility / relocating & reinstating any existing underground facility for his work. The typical dimensions for spacing & depth are shown in the section drawing below.
  • 27. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 27 of 45 SDCS-02-17 REV.01 Cable Trenches Figures 1. Normal trench single LV cable --- Fig. 1 2. Normal trench double LV cable --- Fig. 2 3. Normal trench 3 LV cables --- Fig. 3 4. Micro trench LV cable --- Fig. 4 5. Micro trench MV cable --- Fig. 5 6. Normal trench MV single cable --- Fig. 6 7. Normal trench MV double cable --- Fig. 7 8. Normal trench MV 3 cables --- Fig. 8 9. Normal trench single MV cable 33KV for interconnection between 2 primary substations --- Fig. 9 10.Normal trench double MV cable 33KV for interconnection between 2 primary substations --- Fig. 10 11.Normal trench MV 3 cables 33 KV for interconnection between 2 primary substations --- Fig. 11
  • 28. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 28 of 45 SDCS-02-17 REV.01 1-Normal trench single LV cable ---- Fig. 1 2-Normal trench double LV cable ---- Fig. 2
  • 29. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 29 of 45 SDCS-02-17 REV.01 3-Normal trench 3 LV cables ---- Fig. 3 4-Micro trench LV cable ---- Fig. 4
  • 30. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 30 of 45 SDCS-02-17 REV.01 5-Micro trench MV cable ---- Fig. 5 6-Normal trench MV single cable ---- Fig. 6
  • 31. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 31 of 45 SDCS-02-17 REV.01 7- Normal trench MV double cable ---- Fig. 7 8- Normal trench MV 3 cables ---- Fig. 8
  • 32. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 32 of 45 SDCS-02-17 REV.01 9-Normal trench single MV cable 33KV for interconnection between 2 primary substations ---- Fig. 9 10- Normal trench double MV cable 33KV for interconnection between 2 primary substations --- Fig. 11
  • 33. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 33 of 45 SDCS-02-17 REV.01 11- Normal trench MV 3 cables 33 KV for interconnection between 2 primary substations ---- Fig. 11
  • 34. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 34 of 45 SDCS-02-17 REV.01 TYPICAL DETAILS OF DIRECT BURIED CABLE AT CROSSOVER /Figures 1. PVC Conduit ---- Fig. 12 2. PVC Conduit Accessories ---- Fig. 13 3. Typical Cannal Crossing ---- Fig. 14 4. Direct Buried Cable at Crossover ---- Fig. 15 5. Direct Buried Duct Bank 1 of 2 ---- Fig. 16 6. Direct Buried Duct Bank 2 of 2 ---- Fig. 17 7. Concrete Encased Duct bank 1 of 2 ---- 18 8. Concrete Encased Duct bank 2 of 2 ---- 19 9. Service Cable Post ---- Fig. 20 10.Sign Post ---- Fig. 21 11.Medium voltage horizontal directional drilling (HDD) and installation of Hope (high density polyethylene on road crossing) -- -- Fig. 22
  • 35. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 35 of 45 SDCS-02-17 REV.01 1- PVC Conduit ---- Fig. 12
  • 36. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 36 of 45 SDCS-02-17 REV.01 2- PVC Conduit Accessories ---- Fig. 13
  • 37. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 37 of 45 SDCS-02-17 REV.01 3- Typical Cannal Crossing ---- Fig. 14
  • 38. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 38 of 45 SDCS-02-17 REV.01 4- Direct Buried Cable at Crossover ---- Fig. 15
  • 39. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 39 of 45 SDCS-02-17 REV.01 5- Direct Buried Duct Bank 1 of 2 ---- Fig. 16
  • 40. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 40 of 45 SDCS-02-17 REV.01 6- Direct Buried Duct Bank 2 of 2 ---- Fig. 17
  • 41. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 41 of 45 SDCS-02-17 REV.01 7- Concrete Encased Duct bank 1 of 2 ---- Fig.18
  • 42. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 42 of 45 SDCS-02-17 REV.01 8- Concrete Encased Duct bank 2 of 2 ----Fig. 19
  • 43. Saudi Electricity Company Distribution Services Sector CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK PART 17: CABLE TRENCHES Issue Date: 8/2019 Page: 43 of 45 SDCS-02-17 REV.01 9- Service Cable Post ---- Fig. 20