PART1

‫اﻟﺸﺮآﺔ اﻟﺴﻌﻮدﻳﺔ ﻟﻠﻜﻬﺮﺑﺎء‬

Saudi Electricity Company SEC DISTRIBUTION CONSTRUCTION STANDARD

SDCS-02 DATE: MAY 2005G

SDCS-02

CONSTRUCTION STANDARD FOR UNDERGROUND DISTRIBUTION NETWORK

This specification is property of SEC and subject to change or modification without any notice




PART 1

CABLE TRENCHES AND CONCRETE FOUNDATIONS

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TABLE OF CONTENTS CLAUSE

PAGE NO.

DESCRIPTION

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

TRENCH EXCAVATION

6

6.1.1

TRENCH SPECIFICATIONS

7

6.1.2

EXCAVATION

14

6.1.3

SAND AND BEDDING/COVER AND CABLE TILES

15

6.1.4

BACKFILLING AND REINSTATEMENT

15

7

CONCRETE

18

8

SOIL CLASSIFICATION

19

9

UNIT SUBSTATION, PACKAGE SUBSTATION AND R.M.U.

20

6.1

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Saudi Electricity Company SEC DISTRIBUTION CONSTRUCTION STANDARD 1

‫اﻟﺸﺮآﺔ اﻟﺴﻌﻮدﻳﺔ ﻟﻠﻜﻬﺮﺑﺎء‬ SDCS-02 DATE: MAY 2005G

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

3

No.01-SDMS-01.

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 Superseded or obsolete sheets shall be removed immediately upon receipt of revised sheets.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,

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ministry of communication) during engineering stage of the project. Given below is the procedure to be followed in obtaining R-O-W: ¾

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).

¾

Submit R-O-W drawing to the relations section in the concerned operating area.

¾

The actual construction work shall not be started until the digging permit from relevant authorities is obtained.

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 ‫ﺵﺮوط وﻣﻮاﺻﻔﺎت ﺗﻤﺪﻳﺪ اﻟﺨﺪﻣﺎت ﻓﻲ اﻟﻄﺮق‬ ( ‫) ﻃﺮﻳﻘﺔ اﻟﺨﻨﺪق اﻟﻤﻔﺘﻮح‬ :‫اﻟﺸﺮوط اﻟﻌﺎﻣﺔ‬ .‫ ﻋﻠﻰ ﺟﻤﻴﻊ اﻟﻤﻘﺎوﻟﻴﻦ اﻟﺘﻘﻴﺪ ﺑﺎﻟﺸﺮوط واﻟﻤﻮاﺻﻔﺎت‬- ١ .‫ ﻋﻠﻰ اﻟﻤﻘﺎوﻟﻴﻦ اﻟﺤﺼﻮل ﻋﻠﻰ اﻟﺘﺼﺎرﻳﺢ اﻟﻼزﻣﺔ ﻣﻦ ﻗﺒﻞ اﻟﺠﻬﺎت ذات اﻟﻌﻼﻗﺔ ﻗﺒﻞ اﻟﺒﺪء ﺑﺎﻟﻌﻤﻞ‬- ٢ ‫ ﻋﻠﻰ اﻟﻤﻘﺎول ﺗﺠﺪﻳﺪ اﻟﺘﺼﺮﻳﺢ ﻗﺒﻞ اﻥﺘﻬﺎﺋﻪ ﻣﻦ ﻗﺒﻞ اﻟﺠﻬﺎت ذات اﻟﻌﻼﻗﺔ وﻻ ﻳﺠﻮز اﺱﺘﺌﻨﺎف اﻟﻌﻤﻞ ﻣﺎ ﻟﻢ ﻳﻤﺪد اﻟﺘﺮﺥﻴﺺ‬- ٣ .‫ﻥﻈﺎﻣﺎ‬ .‫ ﻋﻠﻰ اﻟﻤﻘﺎول اﻟﺘﻨﺴﻴﻖ ﻣﻊ ﻣﻜﺘﺐ ﺗﻨﺴﻴﻖ اﻟﻤﺸﺎرﻳﻊ و اﻟﺒﻠﺪﻳﺎت اﻟﻔﺮﻋﻴﺔ ﺡﺴﺐ اﻟﻤﺘﺒﻊ‬- ٤ ‫ ﻋﻠﻰ اﻟﻤﻘ ﺎول ﺗﺠﻤﻴ ﻊ اﻟﻤﻌﻠﻮﻣ ﺎت ﻋ ﻦ اﻟﺨﺪﻣ ﺔ ﺗﺤ ﺖ اﻷرض ﻣﺜ ﻞ اﻟﻐ ﺎز واﻟﻤ ﺎء واﻟﺘﻠﻔ ﻮن وﺗﺼ ﺮﻳﻒ اﻟﻤﻴ ﺎﻩ واﻟﻜﻬﺮﺑ ﺎء‬- ٥ .‫واﻟﺤﺼﻮل ﻋﻠﻰ اﻟﺘﺼﺎرﻳﺢ اﻟﻼزﻣﺔ ﻣﻦ اﻟﺪواﺋﺮ اﻟﺤﻜﻮﻣﻴﺔ واﻟﺒﻠﺪﻳﺎت‬ .‫ ﻋﻠﻰ اﻟﻤﻘﺎول اﻟﺘﺄآﺪ ﻣﻦ اﻟﺘﺤﺼﻴﻞ ﻋﻠﻰ اﻟﺘﺼﺎرﻳﺢ اﻟﻼزﻣﺔ ﺑﺎﻟﻤﻮاﻗﻊ اﻟﺨﺎﺻﺔ واﻟﻤﻨﻮﻋﺔ اﻟﻤﺮاﻓﻖ اﻷﺥﺮى‬- ٦ :‫ﺵﺮوط اﻟﺴﻼﻣﺔ‬ :‫ﻳﺮاﻋﻲ اﻟﻤﻘﺎول اﺗﺨﺎذ إﺟﺮاءات اﻟﺤﻴﻄﺔ و اﻟﺴﻼﻣﺔ اﻟﻌﺎﻣﺔ وإﻥﻔﺎذ ﺁﻻﺗﻲ‬

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‫اﻟﺸﺮآﺔ اﻟﺴﻌﻮدﻳﺔ ﻟﻠﻜﻬﺮﺑﺎء‬ ‫‪SDCS-02‬‬ ‫‪DATE: MAY 2005G‬‬

‫‪Saudi Electricity Company‬‬ ‫‪SEC DISTRIBUTION CONSTRUCTION STANDARD‬‬

‫‪ - ١‬وﺿ ﻊ اﻟﻠﻮﺡ ﺎت أول اﻟﺤﻔﺮﻳ ﺔ وأﺥﺮه ﺎ وﻋﻨ ﺪ اﻟﺘﻘﺎﻃﻌ ﺎت اﻟﺮﺋﻴﺴ ﻴﺔ ﺗﺤﻤ ﻞ اﺱ ﻢ اﻟﻤﻘ ﺎول ) اﻟﺸ ﺮآﺔ أو اﻟﻤﺆﺱﺴ ﺔ (‬ ‫واﻟـﺸﺮآﺔ اﻟﺴﻌﻮدﻳـﺔ ﻟﻠﻜﻬﺮﺑﺎء ﺑﺎﻟﻤﻨﻄﻘﺔ اﻟﻐﺮﺑﻴﺔ ) إدارة آﻬﺮﺑﺎء ﺟﺪة ( اﻟﺘﺎﺑﻊ ﻟﻬﺎ وﺻﻮرة ﺗﺼﺮﻳﺢ اﻟﻌﻤﻞ‪.‬‬ ‫‪ - ٢‬اﺱﺘﻌﻤﺎل اﻟﻠﻮﺡﺎت اﻹرﺵﺎدﻳﺔ واﻟﺘﺤﺬﻳﺮﻳﺔ اﻟﺪوﻟﻴﺔ اﻟﻌﺎآﺴﺔ واﻟﺤﻮاﺟﺰ اﻟﻤﺮورﻳﺔ ﺑﺼﻮرة آﺎﻓﻴﺔ وﻇ ﺎهﺮة ﺡﺴ ﺐ ﺗﻌﻠﻴﻤ ﺎت‬ ‫ﻣﺮور ﺟﺪة وإدارة اﻟﺪﻓﺎع اﻟﻤﺪﻥﻲ ‪ /‬ﻗﺴﻢ اﻟﺴﻼﻣﺔ‪.‬‬ ‫‪ - ٣‬وﺿﻊ أﺿﺎءﻩ آﺎﻓﻴﺔ أﺙﻨﺎء اﻟﻠﻴﻞ أﻣﺎم و ﻋﻠﻰ ﺟﺎﻥﺒﻲ اﻟﺤﻔﺮ وﻋﻠﻰ ﻣﺴﺎﻓﺎت ﻻ ﺗﺰﻳﺪ ﻋﻦ ) ‪ ( ٢‬ﻣﺘﺮ وﺗﻜﻮن اﻹﺿﺎءة ﻣﻠﻮﻥﺔ‬ ‫و ﺑﻄﺎﻗﺔ ﻻ ﺗﻘﻞ ﻋ ﻦ ) ‪ ( ١٥‬وات‪ ،‬أﻣ ﺎ ﺑﺎﻟﻨﺴ ﺒﺔ اﻟﻠﺤ ﺎم ﻓﻴﻜﺘﻔ ﻲ ﺑﻮﺿ ﻊ ﺵ ﺮاﺋﻂ ﺗﺤﺬﻳﺮﻳ ﺔ ﻣﻠﻮﻥ ﺔ ﺑﺎﻹﺿ ﺎﻓﺔ إﻟ ﻰ ﻋ ﻮاآﺲ‬ ‫ﻓﺴﻔﻮرﻳﺔ ﻣﻊ إﺿﺎءة ﻣﻨﺎﺱﺒﺔ‪.‬‬ ‫‪ - ٤‬وﺿﻊ ﻋﺒﺎرات ﻟﻠﻤﺸﺎة واﻟﺴﻴﺎرات ﻋﻠﻰ اﻟﺤﻔﺮﻳﺎت اﻟﻄﻮﻟﻴﺔ داﺥﻞ اﻟﻤﺪن ﻋﻠﻰ ﻣﺴﺎﻓﺎت ) ‪ ( ١٠٠‬ﻣﺘ ﺮ ﻋﻠ ـﻰ اﻷآﺜ ﺮ وﻓ ﻲ‬ ‫اﻟﻤﻨﺎﻃﻖ ﻏﻴﺮ اﻵهﻠﺔ ﺑﺎﻟﺴﻜﺎن ﻋﻠﻰ ﻣﺴﺎﻓﺔ ) ‪ ( ٢٠٠‬ﻣﺘﺮ آﺄﻗﺼﻰ ﺡﺪ‪.‬‬ ‫‪ - ٥‬إذا آ ﺎن اﻟﺸ ﺎرع ﻣﻜ ﻮن ﻣ ﻦ ﺟ ﺎﻥﺒﻴﻦ ﻓ ﻼ ﻳﺠ ﻮز إﻏ ﻼق أي ﻣ ﻦ اﻟﺠ ﺎﻥﺒﻴﻦ إﻻ ﻓ ﻲ ﺡﺎﻟ ﺔ اﻟ ﻨﺺ ﺻ ﺮاﺡﺔ ﻋﻠ ﻰ ذﻟ ﻚ ﻓ ﻲ‬ ‫اﻟﺘﺼﺮﻳﺢ اﻟﻤﻤﻨﻮح ﻟﻠﻤﻘﺎول‪.‬‬ ‫‪ – ٦‬ﻓﻲ ﺡﺎﻟﺔ ﻗﻔﻞ أي ﻃﺮﻳﻖ ﻳﺠﺐ ﻋﻠﻰ اﻟﻤﻘﺎول اﻟﻘﻴ ﺎم ﺑﻌﻤ ﻞ ﺗﺤﻮﻳﻠ ﻪ ﻣﺴ ﻔﻠﺘﺔ ﻋﻠ ﻰ ﺡﺴ ﺎﺑﻪ و ﺑﺎﻟﺘﻨﺴ ﻴﻖ ﻣ ﻊ ﻣﻜﺘ ﺐ ﺗﻨﺴ ﻴﻖ‬ ‫اﻟﻤﺸﺎرﻳﻊ و إدارة ﻣﺮور ﺟﺪة وإدارة اﻟﺼﻴﺎﻥﺔ ﺑﺎﻷﻣﺎﻥﺔ‪.‬‬ ‫اﻟﺸﺮوط اﻟﻌﺎﻣﺔ اﻟﻔﻨﻴﺔ‪:‬‬ ‫‪ - ١‬آـﻞ اﻷﻋﻤﺎل اﻟﻤﻨﻔﺬة و اﻟﻤﻮاد اﻟﻤﺴﺘﺨﺪﻣﺔ ﻳﻨﺒﻐﻲ أن ﺗﻜﻮن ﻣﻮاﻓﻘـﺔ ﻟﻠﺨﻄﻮط واﻟﻤﻘﺎﻃﻊ و اﻟﻤﻘﺎﺱﺎت و اﻟﺸﺮوط و‬ ‫اﻻﺡﺘﻤﺎﻻت اﻟﻤﺬآﻮرة ﻓﻲ اﻟﻤﻮاﺻﻔﺎت‪.‬‬ ‫‪ - ٢‬اﻟﻤﻮاد اﻟﻤﺴﺘﺨﺪﻣﺔ ﻳﻨﺒﻐﻲ أن ﺗﻘﺒﻞ ﻣﻦ ﻗﺒﻞ اﻟﺸﺮآﺔ ﻗﺒﻞ اﺱﺘﺨﺪاﻣﻬﺎ ﻓﻲ اﻟﻌﻤﻞ‪.‬‬ ‫‪ - ٣‬ﺟﻤﻴﻊ اﻟﻤﻮاد اﻟﻤﺴﺘﺨﺪﻣﺔ ﻓﻲ اﻟﻌﻤﻞ ﻳﻨﺒﻐﻲ أن ﺗﻮاﻓﻖ اﻟﻤﻮاﺻﻔﺎت أوﺗﺰﻳﺪ ﻋﻨﻬﺎ‪.‬‬ ‫‪ - ٤‬ﻋﻠﻰ اﻟﻤﻘﺎول ﺗﺤﺪﻳﺪ وﺡﻤﺎﻳﺔ اﻟﻤﺮاﻓﻖ ﺗﺤﺖ اﻷرض ﻋﻨﺪ ﺗﻨﻔﻴﺬﻩ ﻟﻠﻌﻤﻞ‪.‬‬ ‫‪ - ٥‬اﻻﺥﺘﺒﺎرات اﻟﻼزﻣﺔ ) ﺑﺎﻟﻤﻮﻗﻊ و اﻟﻤﻌﺎﻣﻞ ( ﻟﻠﺘﺄآﺪ ﻣﻦ ﺱﻼﻣﺔ اﻟﺪك ﺗﺆﺥﺬ ﺡﺴﺐ اﻟﺤﺎﺟﺔ‪.‬‬ ‫‪ - ٦‬ﻋﻠﻰ اﻟﻤﻘﺎول ﺗﺠﻬﻴﺰ اﻟﻤﻌﺪات اﻟﻼزﻣﺔ ﻟﺴﺤﺐ وﺵﻔﻂ اﻟﻤﻴﺎﻩ واﻟﻤﻴﺎﻩ اﻟﺠﻮﻓﻴﺔ اﻟﺘﻲ ﺗﺪﺥﻞ اﻟﺤﻔﺮﻳﺎت وﻣﻮاﻗﻊ اﻟﻌﻤﻞ‪.‬‬ ‫‪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. Fig. 1 through 6 is trench constructions for direct‬‬ ‫‪buried cable.‬‬ ‫‪Trench Excavation‬‬ ‫‪Before proceeding with actual work of trench excavation, following preparations‬‬ ‫‪should be completed:‬‬ ‫‪Review the cable route drawings, R-O-W drawings, digging permit, and inspect the‬‬ ‫‪cable route from end to end.‬‬

‫‪Page 6 of 52‬‬

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‫‪6.1‬‬



‫‪Decide locating where cable drums shall be unloaded at site, keeping in view the‬‬

‫•‬

‫‪actual cable lengths on drums.‬‬ ‫‪Decide locations of cable joints. Avoid street intersections. Joints should preferably‬‬

‫•‬

‫‪be made not closer than 10 meters from edge of any street intersections.‬‬ ‫‪Obtain necessary permissions from the traffic police for the work schedule,‬‬

‫•‬

‫‪warning and lights and design of detours.‬‬ ‫‪Keep ready the necessary number of night warning lamps, stands, wooden/steel‬‬

‫•‬

‫‪bridges for maintaining pedestrian‬‬ ‫‪Arrange necessary manpower keeping in view the work schedule and expiry date of‬‬

‫•‬

‫‪digging permit.‬‬ ‫‪6.1.1 Trench Specifications‬‬ ‫ﻣﻮاﺻﻔﺎت اﻟﺤﻔﺮﻳﺎت‪:‬‬ ‫‪ - ١‬ﻳﻨﺒﻐﻲ أن ﺗﻜﻮن اﻟﺤﻔﺮﻳﺎت ﺑﺎﻟﻜﺎﺑﻼت و اﻟﻤﻮاﺱﻴﺮ ﻣﺴﺘﻘﻴﻤﺔ ﻗ ﺪر اﻹﻣﻜ ﺎن و أﻓﻘﻴ ﻪ وﻋﻤﻮدﻳ ﺔ و ﻓ ﻲ ﺡﺎﻟ ﺔ و ﺟ ﻮد ﺗﺤﻮﻳ ﻞ‬ ‫ﻳﺠﺐ أن ﻳﻜﻮن ﺑﺘﺪرج و ﺡﺴﺐ اﻟﻤﻮاﺻﻔﺎت اﻟﺨﺎﺻﺔ ﺑﺎﻟﻜﺎﺑﻼت ﻣﻨﻌﺎ ﻟﺘﻌﺮض اﻟﻜﺎﺑﻞ ﻟﻠﻀﺮر‪.‬‬ ‫‪ - ٢‬اﻟﺤﻔﺮﻳﺎت ﻳﺠﺐ أن ﺗﻤﺘﺪ إﻟـﻰ ) ‪ ١٠٠‬ﻣﻢ ( ﻣﻦ ﺗﺤﺖ اﻟﻜﺎﺑﻞ أو اﻟﻤﺎﺱﻮرة ﻟﻠﺴﻤﺎح ﻋﻠـﻰ ﻣﺎ ﻳﻘﻞ ) ‪ ١٠٠‬ﻣ ﻢ ( ﻣ ﻦ اﻟﺮﻣ ﻞ‬ ‫اﻟﻨﺎﻋﻢ ﺡﻮل وﺗﺤﺖ اﻟﻜﺎﺑﻞ‪.‬‬ ‫‪ - ٣‬اﻟﺤﻔﺮﻳ ﺎت ﻳﺠ ﺐ أن ﺗﻜ ﻮن ﺑﻌﻤ ﻖ ) ‪ ٦٥٠‬ﻣ ﻢ ( ﻟﺤﻔﺮﻳ ﺎت آ ﺎﺑﻼت اﻟﻀ ﻐﻂ اﻟﻤ ﻨﺨﻔﺾ و) ‪ ٨٠٠‬ﻣ ﻢ ( ﻟﺤﻔﺮﻳ ﺎت آ ﺎﺑﻼت‬ ‫اﻟﻀﻐﻂ اﻟﻤﺘﻮﺱﻂ وﻓﻲ ﺡﺎﻟﺔ اﻟﺤﻔﺮ زﻳﺎدة ﻋﻦ هﺬا اﻟﻌﻤﻖ ﻳﺠﺐ أن ﺗﺘﻢ إﻋﺎدة اﻟﺮدم إﻟ ـﻰ اﻟﻌﻤ ﻖ اﻟﻤﻄﻠ ﻮب ﺑﻤ ﻮاد ﻣﺨﺘ ﺎرة‬ ‫ﺑﻨﺴﺒﺔ ) د ك ‪ ( % ٩٥‬ﺡـﺴﺐ ‪ ASTM‬ﻟﻠﺘﺮﺑـﺔ اﻟﻤﺤﺘﻮﻳﺔ ﻋﻠﻰ ) ‪ % ١٥‬ﻣﺎر ( ﻣﻦ اﻟﻤﻨﺨﻞ رﻗﻢ ) ‪ ( # ٢٠٠‬أو ) ‪٨٥‬‬ ‫‪ ( %‬آﺜﺎﻓﺔ ﻥﺴﺒﻴﺔ ﻟﻠﺘﺮﺑﺔ اﻟﻐﻴﺮ ﻻﺻ ﻘﺔ اﻟﻤﺴ ﺘﺨﺪﻣﺔ ﻟﺤﺮﻳ ﺔ اﻟﺼ ﺮف اﻟﻤﺤﺘﻮﻳ ﺔ ﻋﻠ ﻰ اﻗ ﻞ ﻣ ﻦ ) ‪ ( % ١٥‬ﻟﻠﻤ ﺎدة اﻟﻐﻴ ﺮ‬ ‫ﺑﻼﺱﺘﻴﻜﻴﺔ اﻟﺘﺮب اﻟﻤﺎرة ﻣﻦ اﻟﻤﻨﺨﻞ رﻗﻢ ) ‪.( # ٢٠٠‬‬ ‫‪ - ٤‬اﻷﺟ ﺰاء اﻟﻠﻴﻨ ﺔ أو اﻟﻀ ﻌﻴﻔﺔ ﻓ ﻲ اﻟﺤﻔﺮﻳ ﺔ ﻳﺠ ﺐ أن ﺗ ﺪك ﺡﺴ ﺐ ﻣ ﺎ ﺱ ﺒﻖ أو أن ﻳ ﺘﻢ ﺗﻐﻴﻴ ﺮ اﻟﺘﺮﺑ ﺔ اﻟﻀ ﻌﻴﻔﺔ ﺑﻤ ﻮاد ردم‬ ‫ﻣﺨﺘﺎرة ﺟﻴﺪة ﺡﺴﺐ اﻟﻤﻮاﺻﻔﺎت‪.‬‬ ‫‪ - ٥‬أﺱﻔﻞ اﻟﺤﻔﺮﻳﺔ ﻳﺠﺐ أن ﻳﻜﻮن ﻣﺘﺴﺎوي و ﺥﺎل ﻣﻦ اﻟﺼﺨﻮر و اﻟﻤﻮاد اﻟﺤﺎدة اﻟﺘﻲ ﻳﻤﻜﻦ أن ﺗﻀﺮ ﺑﺎﻟﻜﺎﺑﻞ‪.‬‬ ‫‪ - ٦‬ﻋﺮض اﻟﺤﻔﺮﻳﺔ ) ‪ ٤٠‬ﺱﻢ ( ﻟﻜﺎﺑﻞ واﺡﺪ وﻳﻀﺎف )‪ ٢٠‬ﺱﻢ ( ﻟﻜﻞ آﺎﺑﻞ ﻣﻀﺎف‪.‬‬ ‫‪ - ٧‬ﻳﺘﻢ اﻟﺮدم ﺡﻮل اﻟﻤﻨﺸﺂت ﻣﺜﻞ ﻏﺮف اﻟﺘﻔﺘﻴﺶ واﻟﺘﺠﻤﻊ وﻏﺮف اﻟﻤﺤﺎﺑﺲ ‪ ..‬اﻟﺦ ﺑﺎﺱﺘﺨﺪام ﻣﻮاد ردم ﻣﻨﺎﺱﺒﺔ ﻳﻀ ﺎف ﻟﻬ ﺎ‬ ‫ﻣﻮاد ﻣﺤﺴﻨﺔ ﻣﻊ اﻟﺮش ﺑﺎﻟﻤﺎء واﻟﺨﻠﻂ ﺟﻴﺪًا واﻟﺪك ﺡﺘﻰ ﻥﺴ ﺒﺔ ‪ % ٩٥‬ﻣ ﻦ اﻟﻜﺜﺎﻓ ﺔ اﻟﺠﺎﻓ ﺔ اﻟﻘﺼ ﻮى ﻣ ﻊ ﻣﺮاﻋ ﺎة اﻟﻤ ﺪة‬ ‫اﻟﺘﻲ ﻳﺠﺐ أن ﺗﻔﺼﻞ ﺑﻴﻦ ﻋﻤﻠﻴﺔ اﻟﺮدم وﺻﺐ اﻟﻤﻨﺸﺂت اﻟﺨﺮﺱﺎﻥﻴﺔ‪.‬‬ ‫‪Page 7 of 52‬‬




DEPTH & WIDTH OF TRENCH:

Finished Road/Sidewalk Surface or Final Ground Level

300

800mm

Warning Tape

Backfill 200

100

Cable

100 100 400

Fine Sand

MV TRENCH CONFIGURATION FIG. 1

Page 8 of 52




Finished Road/Sidewalk Surface or Final Ground

300

800mm

Warning Tape

Backfill

200

100

Cable

100 100

Fine Sand 150

300

150

MV TRENCH CONFIGURATION FIG. 2

Page 9 of 52




Sidewalk Surface or Final Ground Level

300

800mm

Warning Tape

200

Backfill

100 100

Cable

100

150

Fine Sand 300

300

150

MV TRENCH CONFIGURATION FIG. 3 NOTE: The construction of lying three cables or more is the same as lying one or two cables, but in three or more we required cement to obtain 5% concentration.

Page 10 of 52

Saudi Electricity Company


SEC DISTRIBUTION CONSTRUCTION STANDARD



200

650mm

Warning Tape

Backfill 200

100 80

Cable

70

Fine Sand

LV TRENCH CONFIGURATION FIG. 4

Page 11 of 52






200

650mm

Warning Tape

Backfill

200

100

Cable

80 70

Fine Sand

LV TRENCH CONFIGURATION FIG. 5

Page 12 of 52






200

650mm

Warning Tape

200

Backfill

100 80

Cable

70

Fine Sand

LV TRENCH CONFIGURATION FIG. 6 NOTE: The construction of lying three cables or more is the same as lying one or two cables, but in three or more we required cement to obtain 5% concentration.

Page 13 of 52



‫ﻗﻄﻊ اﻹﺱﻔﻠﺖ‬ ‫ﻳﻜ ﻮن اﻟﻘﻄ ﻊ ﺑﺎﻟﻤﻨﺸ ﺎر وﺑﺎﺗﺴ ﺎع ﻻ ﻳﻘ ﻞ ﻋ ﻦ ) ‪١٥‬ﺱ ﻢ ( ﺡﺴ ﺐ ﻣﻮاﺻ ﻔﺎت وزارة اﻟﺸ ﺌﻮن اﻟﺒﻠﺪﻳ ﺔ واﻟﻘﺮوﻳ ﺔ أو)‪ ٢٠‬ﺱ ﻢ (‬ ‫ﺡﺴﺐ ﻣﻮاﺻﻔﺎت وزارة اﻟﻤﻮاﺻﻼت زﻳـﺎدة ﻋﻦ ﻋﺮض اﻟﺤﻔﺮﻳﺔ ﻣﻦ آـﻞ ﺟﺎﻥﺐ ﺑﻌﻤﻖ ) ‪ ٤٠‬ﺱ ﻢ ( ﻓ ﻲ ﺡﺎﻟ ﺔ وﺟ ﻮد ﻃﺒﻘ ﺔ ﻣ ﺎ‬ ‫ﺗﺤﺖ اﻷﺱﺎس وﻓﻲ ﺡﺎﻟﺔ ﻋﺪم وﺟﻮدهﺎ ﻳﻜﻮن ﺑﻌﻤﻖ ﻻ ﻳﻘﻞ ﻋﻦ ﻋﻤﻖ ﻃﺒﻘﺔ اﻹﺱﻔﻠﺖ اﻟﻤﻮﺟﻮدة ﻓﻲ اﻟﻄﺮﻳﻖ‪.‬‬ ‫أﻣﺎ ﻓﻲ ﺡﺎﻟﺔ اﻟﺤﻔﺮﻳﺎت اﻟﺘﻲ ﻳﺰﻳﺪ ﻋﺮﺿﻬﺎ ﻋ ﻦ ﻣﺘ ﺮ واﺡ ﺪ ﻳﻜ ﻮن ﻗﻄ ﻊ اﻹﺱ ﻔﻠﺖ ﺑﺰﻳ ﺎدة ﻋ ﻦ ﻋ ﺮض اﻟﺤﻔﺮﻳ ﺔ ﺑﻤﻘ ﺪار ﺥﻤﺴ ﺔ‬ ‫ﻋﺸﺮ ﺱﻨﺘﻴﻤﺘﺮات ﻣﻦ آﻼ اﻟﺤﺎﻟﺘﻴﻦ‪.‬‬ ‫وﻓﻲ ﺡﺎﻟﺔ اﻟﺸﻮارع اﻟﻔﺮﻋﻴﺔ ﻓﻘﻂ و اﻟﻤﺤﺪد ﻣﻦ ﻗﺒﻞ اﻟﻠﺠﻨﺔ وإذا آﺎن ﺑﻌﺪ اﻟﺤﻔﺮﻳﺔ ﻋﻦ اﻟﺮﺻﻴﻒ اﻗﻞ ﻣﻦ ﻣﺘﺮ واﺡﺪ أو اﻗﻞ ﻣﻦ‬ ‫ﻣﺘﺮﻳﻦ ﻋﻦ ﺡﺎﻓﺔ اﻟﻤﺒﻨﻰ ) ﻓﻲ ﺡﺎﻟﺔ وﺟﻮد رﺻﻴﻒ ( ﻳﻜﻮن ﻋﺮض اﻟﺤﻔﺮﻳﺔ ﺡﺴﺐ ﻣﻮاﺻﻔﺎت ﺻﺎﺡﺐ اﻟﻤﺸﺮوع‪.‬‬ ‫‪6.1.2 Excavation‬‬ ‫‪In deciding at what depth the trench should be excavated, it is necessary to take into‬‬ ‫‪consideration the changes being made in the existing grade level by any earth cut or fill‬‬ ‫‪work to be carried out later. Such information should be gathered from the Ministry of‬‬ ‫‪communications or municipality so that ultimately the standard depth of cable can be‬‬ ‫‪achieved.‬‬ ‫‪Trenches may be dug by hand or, if site conditions permit, a mechanical excavator can‬‬ ‫‪be used. Asphalt shall be cut by a motor driven saw. Manual digging shall be used at‬‬ ‫‪locations where existing underground facilities 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.‬‬ ‫أﻋﻤﺎل اﻟﺤﻔﺮ‬ ‫ﺗﺘﻢ ﻋﻤﻠﻴﺔ اﻟﺤﻔﺮ ﺑﺎﻟﻤﻌﺪات اﻟﻤﻨﺎﺱﺒﺔ ﻣﻊ اﻻﻟﺘﺰام ﺑﻮﺿﻊ أﻟﻮاح ﺥﺸ ﺒﻴﺔ أو ﻣﻄﺎﻃﻴ ﺔ ﻋﻠ ﻰ ﻃﺒﻘ ﺎت اﻹﺱ ﻔﻠﺖ وﺗﺤ ﺖ اﻟﻤﻌ ﺪات‬ ‫وﻳﻤﻨﻊ ﻣﻨﻌ ًﺎ ﺑﺎﺗ ًﺎ اﺱ ﺘﺨﺪام اﻵﻻت ذات اﻷرﺟ ﻞ اﻟﻤﻨﺘﻬﻴ ﺔ ﺑﺨﻮازﻳ ﻖ و ﺗﺤﻤ ﻞ ﻥ ﻮاﺗﺞ اﻟﺤﻔ ﺮ اﻟﺘ ﻲ ﻻ ﻳﻤﻜ ﻦ إﻋ ﺎدة اﺱ ﺘﺨﺪاﻣﻬﺎ‬ ‫ﻣﺒﺎﺵﺮة ﺥﺎرج ﻣﻮﻗﻊ اﻟﻌﻤﻞ وﻳﺘﻢ ﺗﻨﻈﻴﻒ ﻣﻮﻗﻊ اﻟﻌﻤﻞ ﺑﺼﻔﺔ داﺋﻤﺔ وﻳﺘﻢ ﺡﻤ ﻞ ﻣﺨﻠﻔ ﺎت اﻟﺤﻔ ﺮ اﻟﺨﺎﺻ ﺔ ﺑﺎﻟﻤﺸ ﺎرﻳﻊ اﻟﻜﺒﻴ ﺮة‬ ‫إﻟﻰ ﺥﺎرج اﻟﻤﺪﻳﻨﺔ ﻟﻴﺮﻣﻰ ﻓﻲ أﻻﻣﺎآﻦ اﻟﻤﺨﺼﺼﺔ ﻟﺬﻟﻚ اﻟﻐﺮض ‪.‬‬ ‫ﻳﺠﺐ أن ﻳﻜﻮن اﻟﺨﻨﺎدق اﻟﺨﺎﺻ ﺔ ﺑﺘﻤﺪﻳ ﺪ اﻟﺨﺪﻣ ﺔ ﺥﺎﻟﻴ ﺔ ﺗﻤﺎﻣ ًﺎ ﻣ ﻦ اﻟﻤﻴ ﺎﻩ اﻟﺠﻮﻓﻴ ﺔ وﻏﻴﺮه ﺎ ﻗﺒ ﻞ ﻋﻤﻠﻴ ﺔ اﻟﺘﻤﺪﻳ ﺪ آﻤ ﺎ ﻳﺠ ﺐ‬ ‫ﺗﺪﻋﻴﻢ ﺟﺎﻥﺒﻲ اﻟﺨﻨ ﺪق ﻟﻤﻨ ﻊ اﻥﻬﻴ ﺎر اﻟﺘﺮﺑ ﺔ إذا اﺱ ﺘﻠﺰﻣﺖ ﻃﺒﻴﻌﺘﻬ ﺎ ذﻟ ﻚ ﻣ ﻊ اﻟ ﺘﺨﻠﺺ ﻣ ﻦ اﻟﺤﻔﺮﻳ ﺎت اﻟﺰاﺋ ﺪة أوﻻ ﺑ ﺄول ﻓ ﻲ‬ ‫أﻣﺎآﻦ ﻳﺤﺪدهﺎ اﻟﻤﻬﻨﺪس اﻟﻤﺸﺮف‪.‬‬ ‫ﻳﺠﺐ اﻟﻤﺤﺎﻓﻈﺔ ﻋﻠﻰ ﺥﻄﻮط اﻟﺨﺪﻣﺎت اﻷﺥﺮى أﺙﻨﺎء اﻟﻌﻤﻞ‪.‬‬

‫‪Page 14 of 52‬‬



6.1.3 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. : ‫اﻟﺮﻣﻞ اﻟﻨﺎﻋﻢ‬ : ‫ ﺱﻢ ( أﺱﻔﻞ وأﻋﻠﻰ اﻟﻜﺎﺑﻞ وﻳﻜﻮن اﻟﺮﻣﻞ ﻣﻄﺎﺑﻘﺎ ﻟﻠﻤﻮاﺻﻔﺎت اﻵﺗﻴﺔ‬١٠ ) ‫ﻳﺘﻢ وﺿﻊ رﻣﻞ ﻥﺎﻋﻢ أﺱﻔﻞ وﺡﻮل اﻟﻜﺎﺑﻞ ﺑﺴﻤﻚ‬ ‫ﻣﻨﺨﻞ ﻣﻘﺎس اﻟﺤﺠﻢ‬ ‫ﺍﻟﻨﺴﺒﺔ ﺍﳌﺌﻮﻳﺔ ﻟﻠﻤﺎﺭ ﺑﺎﻟﻮﺯﻥ‬

‫ﲟﻮﺟﺐ ﻣﻮﺍﺻﻔﺎﺕ ﺍﳉﻤﻌﻴﺔ ﺍﻷﻣﺮﻳﻜﻴﺔ‬ % ١٠٠

‫ ﻣﻢ‬٤,٧٥ ٤ ‫ﺭﻗﻢ‬

% ٥٩ - ٨٠

‫ ﻣﻢ‬٢,٠٠ ١٠ ‫ﺭﻗﻢ‬

% ٨٠ - ٤٠

‫ ﻣﻢ‬٠,٤٢٥ ٤٠ ‫ﺭﻗﻢ‬

% ٦٠ - ٢٠

‫ ﻣﻢ‬٠,٢٥٠ ٦٠ ‫ﺭﻗﻢ‬

% ‫ ﺍﻗﻞ‬- ١٠

‫ ﻣﻢ‬٠,٠٧٥ ٢٠٠ ‫ﺭﻗﻢ‬ : ‫ ﺑﻠﻚ اﻟﺤﻤﺎﻳﺔ‬- ٨

،‫ ﻣ ﻢ‬٤٠٠× ‫ﻣ ﻢ‬٢٠٠ × ‫ ﻣ ﻢ‬٥٠ ‫ك ف وﻣﺎ ﻓﻮق ﺑﻮاﺱﻄﺔ ﺑﻠﻚ اﻟﺤﻤﺎﻳﺔ ﻣﻘ ﺎس‬٣٣ ‫ﻳﺠﺐ ﺡﻤﺎﻳﺔ اﻟﻜﺎﺑﻼت اﻟﻤﻄﻤﻮرة ﻟﻠﺠﻬﻮد‬ .‫وﻳﻮﺿﻊ ﻓﻮق رﻣﻞ اﻟﺤﻤﺎﻳﺔ‬ 6.1.4

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. ‫اﻟﺮدم واﻟﺪك‬ ‫ ﻳﺘﻢ اﻟ ﺮدم ﻓ ﻲ أﻻﻣ ﺎآﻦ اﻟﻤﻄﻠ ﻮب ردﻣﻬ ﺎ ﺑﻤ ﻮاد ﻣﺨﺘ ﺎرة ﺡﺴ ﺐ ﻣﻮاﺻ ﻔﺎت وزارة اﻟﺸ ﺌﻮن اﻟﺒﻠﺪﻳ ﺔ واﻟﻘﺮوﻳ ﺔ أو وزارة‬-١ . ‫اﻟﻤﻮاﺻﻼت وﻣﻊ ﻋﺪم اﻹﺥﻼل ﺑﻤﺎ ورد ﻓﻲ هﺬﻩ اﻟﻤﻮاﺻﻔﺎت‬

Page 15 of 52



‫‪ - ٢‬ﻓﻲ اﻟﻄﺒﻘﺎت اﻟﺘﻲ ﺑﻌﻤﻖ أآﺜﺮ ﻣﻦ ) ‪ ٦٠‬ﺱﻢ ( ﻣﻦ ﻃﺒﻘﺔ ﻣﺎ ﺗﺤﺖ اﻷﺱﺎس ﻳﺘﻢ اﻟﺮدم ﻋﻠﻰ ﻃﺒﻘﺎت ﺑﺤﻴﺚ ﻻ ﻳﺰﻳﺪ ﺱﻤﻜﻬﺎ‬ ‫ﻋﻦ ) ‪ ٣٠‬ﺱﻢ ( آﺤﺪ أﻗﺼﻰ وﻳﺠﺐ أن ﺗﺮش ﺑﺎﻟﻤﺎء و ﺗﺨﻠﻂ ﺟﻴﺪًا ﻗﺒﻞ أن ﺗﻮﺿﻊ ﻓﻲ اﻟﺤﻔﺮﻳﺔ ﺡﺴﺐ اﻟﻨﺴﺐ اﻟﻤﻘ ﺮرة‬ ‫ﻟﻠﻮﺻ ﻮل إﻟ ﻰ أﺡﺴ ﻦ آﺜﺎﻓ ﺔ ﺑﻤﻮﺟ ﺐ ﺗﺠﺮﺑ ﺔ ﺑﺮﻣﺘ ﻮ اﻟﻤﻌﺪﻟ ﺔ و ﺗﻬ ﺮس ﻟﻠﻮﺻ ﻮل إﻟ ﻰ ﻥﺴ ﺒﺔ ) ‪ ( % ٩٠‬ﻣ ﻦ اﻟﻜﺜﺎﻓ ﺔ‬ ‫اﻟﺠﺎﻓﺔ اﻟﻌﻈﻤﻰ اﻟﻤﻘﺮرة ﺑﻤﻮﺟﺐ ﺗﺠﺮﺑﺔ ﺑﺮآﺘﻮ اﻟﻤﻌﺪﻟﺔ ‪.‬‬ ‫‪ - ٣‬ﻓـﻲ اﻟﻄﺒﻘﺎت اﻟﺘﻲ ﺗﻠﻲ اﻟﻄﺒﻘﺎت أﻋﻼﻩ ﻋﻠﻰ ﻋﻤﻖ اﻗﻞ ﻣ ﻦ ) ‪ ٦٠‬ﺱ ﻢ ( ﻣ ﻦ ﺗﺤ ﺖ اﻷﺱ ﺎس ﻓﺘ ﺮدم ﻋﻠ ﻰ ﻃﺒﻘ ﺎت أﻳﻀ ﺎ‬ ‫وﺱﻤﻚ آـﻞ ﻃﺒﻘﺔ ﻻ ﻳﺰﻳﺪ ﻋﻦ ) ‪ ٢٠‬ﺱﻢ ( وﻳﺠﺐ أن ﺗﺮش ﺑﺎﻟﻤﺎء وﺗﻬﺮس ﺡﺘﻰ اﻟﻮﺻﻞ إﻟﻰ ﻥﺴ ﺒﺔ ﻻ ﺗﻘ ﻞ ﻋ ﻦ ) ‪٩٥‬‬ ‫‪ ( %‬ﻣﻦ اﻟﻜﺜﺎﻓﺔ اﻟﺠﺎﻓﺔ اﻟﻌﻈﻤﻰ و ﻳﺠﺐ أن ﺗﻜﻮن اﻟﻤﻮاد ﻃﺒﻘًﺎ ﻟﻠﻤﻮاﺻﻔﺎت ‪.‬‬ ‫‪ - ٤‬ﻃﺒﻘﺔ ﻣﺎ ﺗﺤﺖ اﻷﺱﺎس اﻟﺤﺠﺮي اﻟﻤﺘ ﺪرج ﺗﺘﻜ ﻮن ﻣ ﻦ ﻣﺨﻠ ﻮط ﻣﺘﺠ ﺎﻥﺲ ﻣ ﻦ اﻟﺤﺼ ﻤﻪ اﻟﻤﻜﺴ ﺮة أو ﻗﻄ ﻊ اﻟﺼ ﺨﻮر و‬ ‫اﻟﺮﻣﻞ واﻟﻄﻤﻲ وﻳﺠﺐ أن ﺗﺪرج ﻣﻮاد هﺬﻩ اﻟﻄﺒﻘﺔ ﺡﺴﺐ اﻵﺗﻲ‪:‬‬

‫ﲟﻮﺟﺐ ﻣﻮﺍﺻﻔﺎﺕ ﺍﳉﻤﻌﻴﺔ‬

‫ﺍﻟﻨﺴﺒﺔ ﺍﳌﺌﻮﻳﺔ ﳌﺎﳝﺮ ﺑﺎﻟﻮﺯﻥ ﻟﻔﺤﺺ‬

‫ﺍﻷﻣﺮﻳﻜﻴﺔ‬

‫ﺍﳌﻮﺍﺩ‬

‫ﻣﻨﺨﻞ ﻗﻴﺎﺱ ﺍﳊﺠﻢ‬ ‫‪ ٢,٠٠‬ﺑﻮﺻﺔ‬

‫‪% ١٠٠‬‬

‫‪ ١,٥٠‬ﺑﻮﺻﺔ‬

‫‪% ١٠٠ - ٧٠‬‬

‫‪ ١,٠٠‬ﺑﻮﺻﺔ‬

‫‪% ٨٥ - ٥٥‬‬

‫‪ ٣ / ٤‬ﺑﻮﺻﺔ‬

‫‪% ٨٠ - ٥٠‬‬

‫‪ ٣ / ٨‬ﺑﻮﺻﺔ‬

‫‪% ٧٠ - ٤٠‬‬

‫ﺭﻗﻢ ‪٤‬‬

‫‪% ٧٠ - ٤٤‬‬

‫ﺭﻗﻢ ‪١٠‬‬

‫‪% ٥٠ - ٢٠‬‬

‫ﺭﻗﻢ ‪٤٠‬‬

‫‪% ٢٠ - ١٠‬‬

‫ﺭﻗﻢ ‪٢٠٠‬‬

‫‪% ١٥ - ٥‬‬

‫‪ - ١‬ﺗﻮﺿ ﻊ ﻟﻮﺡ ﺎت ﺑﺄﺑﻌ ﺎد ‪ ٠٫٦٠ × ١٫٠٠‬ﻣﺘ ﺮ ﻋﻠ ﻰ أول اﻟﺤﻔ ﺮ وأﺥﺮه ﺎ وﻋﻨ ﺪ اﻟﺘﻘﺎﻃﻌ ﺎت اﻟﺮﺋﻴﺴ ﻴﺔ ﻳﻜﺘ ﺐ ﻋﻠﻴﻬ ﺎ اﺱ ﻢ‬ ‫اﻟﺸﺮآﺔ أو اﻟﻤﺆﺱﺴﺔ ورﻗﻢ هﺎﺗﻔﻬﺎ واﻟﺠﻬﺔ اﻟﺘﺎﺑﻌﺔ ﻟﻬﺎ واﻻﺱﺘﺸﺎري ورﻗﻢ اﻟﻤﺸﺮوع وﺗﻜﻮن اﻟﻜﺘﺎﺑﺔ ﺑ ﺎﻟﻠﻐﺘﻴﻦ اﻟﻌﺮﺑﻴ ﺔ‬ ‫واﻹﻥﺠﻠﻴﺰﻳﺔ ‪.‬‬ ‫‪ - ٢‬ﻳﺠ ﺐ ﻋﻤ ﻞ اﻟﺘﺤ ﻮﻳﻼت اﻟﻤﺮورﻳ ﺔ وﺗﺰوﻳ ﺪهﺎ ﺑﺎﻟﻠﻮﺡ ﺎت اﻹرﺵ ﺎدﻳﺔ واﻟﺘﺤﺬﻳﺮﻳ ﺔ واﻟﺤ ﻮاﺟﺰ ﺡﺴ ﺒﻤﺎ ورد ﺑ ﺪﻟﻴﻞ أﺟﻬ ﺰة‬ ‫اﻟﺘﺤﻜﻢ اﻟﻨﻈﺎﻣﻴﺔ ﻓﻲ اﻟﻤﺮور ﺑﻤﻨﺎﻃﻖ اﻟﻌﻤﻞ اﻟﺼﺎدر ﻣﻦ ﻗﺒﻞ وزارة اﻟﻤﻮاﺻﻼت ‪.‬‬ ‫‪ - ٣‬ﻃﺒﻘﺎ ﻣﺎ ﺗﺤﺖ اﻷﺱﺎس اﻟﺤﺼﻮي واﻷﺱﺎس اﻟﺤﺼﻮي اﻟﻤﺘﺪرج ﺗﺘﻜﻮن ﻣﻦ ﻣﺨﻠﻮط ﻣﺘﺠﺎﻥﺲ ﻣﻦ اﻟﺤﺼ ﻤﻪ اﻟﻤﻜﺴ ﺮة أو‬ ‫ﻗﻄﻊ اﻟﺼﺨﻮر واﻟﺮﻣـﻞ واﻟﻄﻤﻲ آﺬﻟﻚ ﻳﺠﺐ أن ﺗﻜﻮن ﻥﺴﺒﺔ ﺗﺤﻤﻞ آﺎﻟﻴﻔﻮرﻥﻴﺎ ‪ % ٦٠‬ﻋﻠﻰ اﻷﻗﻞ وإذا ﺗﻌﺬر ﺗﺤﻘﻴﻖ ذﻟﻚ‬ ‫ﻳﻨﺴﻖ ﻣﻊ وزارة اﻟﻤﻮاﺻﻼت ﻟﻠﺘﻮﺟﻴﻪ ﺑﻤﺎ ﻳﻠﺰم وﻳﺠﺐ أن ﺗﺮش هﺬﻩ اﻟﻤﻮاد ﺑﺎﻟﻤﻞء وﺗﺨﻠﻂ ﺟﻴﺪًا وﺗﻔﺮش وﺗﻬﺮس إﻟﻰ‬ ‫درﺟﺔ ‪ % ١٠٠‬ﻣﻦ اﻟﻜﺜﺎﻓﺔ اﻟﺠﺎﻓﺔ اﻟﻘﺼﻮى وﻳﻜﻮن ﻣﺴﺘﻮى ﺱﻄﺢ أﻋﻠﻰ ﻣﻘﻄﻊ ﻣﻨﻬﺎ ﻋﻠﻰ ﻣﺴﺘﻮى اﻗ ﻞ ﻣ ﻦ ﻣﺴ ﺘﻮى‬ ‫ﻗﺎع اﻹﺱﻔﻠﺖ اﻟﻘﺪﻳﻢ وﺗﻔﺮد ﻋﻠﻰ ﻃﺒﻘﺎت ﻻ ﻳﺰﻳﺪ ﺱﻤﻜﻬﺎ آﻞ ﻣﻨﻬﺎ ﻋﻦ ) ‪ ١٥‬ﺱﻢ ( ‪.‬‬ ‫‪ - ٤‬ﻳﻨﺒﻐ ﻲ ﻋﻠ ﻰ اﻟﻤﻘ ﺎول اﻟﻤﻨﻔ ﺬ إﺟ ﺮاء آﺎﻓ ﺔ اﻻﺥﺘﺒ ﺎرات اﻟﺘ ﻲ ﺗﺘﻄﻠﺒﻬ ﺎ ﻣﻮاﺻ ﻔﺎت وزارة اﻟﻤﻮاﺻ ﻼت و اﻟﻤﻮاﺻ ﻔﺎت‬ ‫اﻟﺨﺎﺻﺔ ﺑﺎﻟﻤﺸﺮوع وآﺬﻟﻚ اﻟﺘﻘﻴﺪ ﺑﺘﻌﻠﻴﻤﺎت اﻟﻤﻬﻨﺪس اﻟﻤﺸﺮف ‪.‬‬ ‫‪Page 16 of 52‬‬



‫‪ - ٥‬اﻟﺮدم ﺡﻮل اﻟﻤﻨﺸﺎت ‪:‬‬ ‫اﻟﻤﻘﺼﻮد ﺑﻬﺎ اﻷﺱﺎﺱﺎت ‪ ،‬ﻏ ﺮف اﻟﺘﺠﻤ ﻊ واﻟﺘﻔﺘ ﻴﺶ ‪ ،‬ﻏ ﺮف اﻟﺼ ﻤﺎﻣﺎت ‪ ،‬ﻏ ﺮف اﻟﻐﺴ ﻴﻞ ‪ ...‬اﻟ ـﺦ وﻳﺠ ﺐ أن ﻳﻜ ﻮن اﻟ ﺮدم‬ ‫ﺑﻤﻮاد ﻣﻄـﺎﺑﻘﺔ ﻟﻠﻤﻮاﺻﻔﺎت ﻋﻠﻰ ﻃﺒﻘﺎت ﻻ ﺗﺘﻌﺪى ﺱﻤـﻚ اﻟﻄﺒﻘﺔ ‪ ١٥‬ﺱﻢ وﻳﺠﺐ أن ﺗﺮش ﺑﺎﻟﻤﺎء وﺗﺨﻠﻂ ﺟﻴﺪًا وﺗﻬﺮس ﺡﺘﻰ‬ ‫اﻟﻮﺻﻮل إﻟﻰ ﻥﺴﺒﺔ ‪ % ٩٥‬ﻣﻦ اﻟﻜﺜﺎﻓﺔ اﻟﺠﺎﻓﺔ اﻟﻤﻘﺮرة وﺗﻌﺎﻣﻞ اﻟﻄﺒﻘﺘﻴﻦ اﻟﻨﻬﺎﺋﻴﺘﻴﻦ ﺑﻤﺜﻞ ﻃﺒﻘﺔ ﻣﺎ ﺗﺤﺖ اﻷﺱ ﺎس اﻟﺤﺠ ﺮي‬ ‫ﺑﺤﻴﺚ ﺗﺼﻞ اﻟﻜﺜﺎﻓﺔ اﻟﻌﻈﻤﻰ إﻟﻰ ﻥﺴﺒﺔ ‪. % ١٠٠‬‬ ‫آﺬﻟﻚ ﻳﺠﺐ أن ﺗﻜﻮن ﻥﺴﺒﺔ ﺗﺤﻤﻴﻞ آﺎﻟﻔﻴﻮرﻥﻴﺎ ) ‪ ( % ٦٠‬ﻋﻠﻰ اﻷﻗ ﻞ وﻳﺠ ﺐ أن ﺗ ﺮش ه ﺬﻩ اﻟﻤ ﻮاد ﺑﺎﻟﻤ ﺎء وﺗﺨﻠ ﻂ ﺟﻴ ﺪًا ﺙ ﻢ‬ ‫ﺗﻔﺮش وﺗﻬﺮس إﻟﻰ درﺟﺔ آﺜﺎﻓﺔ ) ‪ ( % ١٠٠‬ﻣﻦ اﻟﻜﺜﺎﻓﺔ اﻟﺠﺎﻓﺔ اﻟﻤﻘﺮرة ﺑﻮاﺱﻄﺔ ﺗﺠﺮﺑﺔ ﺑﺮآﺘﻮر اﻟﻤﻌﺪﻟ ﺔ و ﻳﻜ ﻮن ﺱ ﻤﻚ‬ ‫هﺬﻩ اﻟﻄﺒﻘﺔ ﻋﻠﻰ ﻃﺒﻘﺘﻴﻦ آﻞ ﻣﻨﻬﺎ ) ‪ ١٥‬ﺱﻢ ( وﻳﺠﺐ أن ﺗﺮش ﺑﺎﻟﻤﺎء و ﺗﻬﺮس ﺡﺘ ﻰ اﻟﻮﺻ ﻮل إﻟ ﻰ درﺟ ﺔ اﻟ ﺪك اﻟﻤﻄﻠﻮﺑ ﺔ‬ ‫وﻳﺠﺐ أن ﻳﻜﻮن ﻣﻌﺎﻣﻞ اﻟﻠﺪوﻥﻪ ﻻ ﻳﺰﻳﺪ ﻋﻦ ) ‪. ( % ٦٠‬‬ ‫إﻋﺎدة اﻟﺴﻔﻠﺘﺔ‬ ‫ﺑﻌـﺪ ﺟﻔﺎف ﻃﺒﻘﺔ ﻣﺎ ﺗﺤﺖ اﻷﺱ ـﺎس اﻟﺤﺠ ـﺮي اﻟﻤﺘ ﺪرج ﻣ ﻦ اﻟﻤ ﺎء ﺗﻤﺎﻣ ﺎ ﺗ ﺮش ﺑﻄﺒﻘ ﺔ ﻣ ـﻦ اﻹﺱ ﻔﻠﺖ اﻟﻤﺘﻮﺱ ﻂ اﻟﺘﺠﻤ ﺪ )‬ ‫‪ ( DCI‬ﺑﻤﻌﺪل ) ‪ ١٫٥‬آﺞ ‪ /‬م ( وﻳﺠﺐ أن ﺗﺮش هﺬﻩ اﻟﻤﺎدة ﺑﺎﻟﺮﺵﺎﺵﺎت اﻟﻤﻴﻜﺎﻥﻴﻜﻴﺔ اﻟﻤﻌﺘﻤﺪة ﺑﻌﺪ ﺿﺒﻄﻬﺎ ﻟﺘ ﺮش اﻟﻜﻤﻴ ﺔ‬ ‫اﻟﻤﻘﺮرة ﺑﺸﻜﻞ ﻣﺘﺠﺎﻥﺲ ﻓﻲ ﺟﻤﻴﻊ أﺟﺰاء اﻟﻤﻨﻄﻘﺔ اﻟﻤﺮاد ﺱﻔﻠﺘﺘﻬﺎ أو ﺑﺎﺱﺘﺨﺪام اﻟﺒﺮاﻣﻴﻞ ‪.‬‬ ‫هﺬا وﺗﺘﺮك هﺬﻩ اﻟﻄﺒﻘﺔ ﻟﻤﺪة )‪ ٢٤‬ﺱﺎﻋﺔ ( ﺙﻢ ﺗﺘﻢ ﻋﻤﻠﻴﺔ اﻟﺴﻔﻠﺘﺔ أو ﻋﻤﻠﻴﺔ وﺿﻊ اﻷﺱﺎس اﻹﺱ ﻔﻠﺘﻲ وﻗﺒ ﻞ وﺿ ﻊ اﻷﺱ ﺎس‬ ‫اﻹﺱﻔﻠﺘﻲ ﻳﺠﺐ أن ﻳﻘﻮم اﻟﻤﻘﺎول ﺑﻘﺺ ﻣﻨﻄﻘﺔ ﻟﺤﺎم اﻹﺱﻔﻠﺖ اﻟﻘﺪﻳﻢ ﺑﺎﻟﻤﻨﺸﺎر ﻋﻤﻮدﻳ ًﺎ ﺙﻢ ﻳﺠﺐ ﻋﻠﻴﺔ ﺗﻨﻈﻴﻒ اﻟﻤﻮﻗﻊ ﻣﻦ أﻳ ﺔ‬ ‫ﺵ ﻮاﺋﺐ أو أﺗﺮﺑ ﺔ ﻣﺘﺮﺱ ﺒﺔ ﻋﻠ ﻰ اﻟﺴ ﻄﺢ اﻟﻤ ﺮاد ﺱ ﻔﻠﺘﺘﻪ آ ﺬﻟﻚ ﻳ ﺘﻢ ده ﺎن ﺡ ﻮاف اﻹﺱ ﻔﻠﺖ اﻟﻘ ﺪﻳﻢ ﺑﻤ ﺎدة اﻹﺱ ﻔﻠﺖ اﻟﺴ ﺮﻳﻊ‬ ‫اﻟﺘﺠﻤﺪ ) ‪ ( RC2‬وآﺬﻟﻚ ﺑﻌﺪ ﺗﻨﻈﻴﻔﻬﺎ ﺟﻴﺪًا ﻣﻦ اﻷﺗﺮﺑﺔ ﺗﻢ ﻓﺮد ﻃﺒﻘﺔ اﻷﺱﺎس اﻹﺱﻔﻠﺘﻲ ﺑﺎﻟﺴﻤﻚ اﻟﻤﻨﺎﺱﺐ ﻟﻴﺘﻢ اﻟﻮﺻﻮل إﻟﻰ‬ ‫ﺱﻤﻚ اﻟﻄﺒﻘﺔ اﻟﻤﻄﻠﻮﺑﺔ ﺑﻌﺪ اﻟﻬﺮس وﻳﺠﺐ أن ﺗﺨﻀﻊ ﻣﻮاد هﺬﻩ اﻟﻄﺒﻘﺔ ﻟﻠﺘﺪرج اﻟﺘﺎﻟﻲ‪:‬‬

‫ﻃﺒﻘﺔ ﺍﻷﺳﺎﺱ ﺍﻹﺳﻔﻠﱵ‬ ‫)) ﺭﻗﻢ ﺍﳌﻨﺨﻞ ((‬

‫ﺍﻟﻨﺴﺒﺔ ﺍﳌﺌﻮﻳﺔ ﳌﺎ ﳝﺮ‬ ‫ﺑﺎﻟﻮﺯﻥ‬

‫ﻟﻄﺒﻘﺔ ﺍﻟﺴﻄﺤﻴﺔ ﻟﻺﺳﻔﻠﺖ‬ ‫)) ﺭﻗﻢ ﺍﳌﻨﺨﻞ ((‬

‫ﺍﻟﻨﺴﺒﺔ ﺍﳌﺌﻮﻳﺔ ﳌﺎ ﳝﺮ‬ ‫ﺑﺎﻟﻮﺯﻥ‬

‫‪ ١‬ﺑﻮﺻﺔ‬

‫‪% ١٠٠‬‬

‫‪ ٣/٤‬ﺑﻮﺻﺔ‬

‫‪% ١٠٠‬‬

‫‪ ٣/٤‬ﺑﻮﺻﺔ‬

‫‪% ٩٦ - ٨١‬‬

‫‪ ١/٢‬ﺑﻮﺻﺔ‬

‫‪% ٩٨ - ٨٧‬‬

‫‪ ١/٢‬ﺑﻮﺻﺔ‬

‫‪% ٨٩ - ٦٩‬‬

‫ﺭﻗﻢ ‪٤‬‬

‫‪% ٨٠ - ٦٧‬‬

‫ﺭﻗﻢ ‪٤‬‬

‫‪% ٦٦ - ٤٨‬‬

‫ﺭﻗﻢ ‪١٠‬‬

‫‪% ٦٦ - ٥٤‬‬

‫ﺭﻗﻢ ‪١٠‬‬

‫‪% ٥٠ - ٣٤‬‬

‫ﺭﻗﻢ ‪٤٠‬‬

‫‪% ٤٠ - ٣٠‬‬

‫ﺭﻗﻢ ‪٤٠‬‬

‫‪% ٢٨ - ١٧‬‬

‫ﺭﻗﻢ ‪٨٠‬‬

‫‪% ٢٦ - ١٩‬‬

‫ﺭﻗﻢ ‪٨٠‬‬

‫‪% ١٨ - ١‬‬

‫ﺭﻗﻢ ‪٢٠٠‬‬

‫‪%٨-٤‬‬

‫ﺭﻗﻢ ‪٢٠٠‬‬

‫‪%٧-٣‬‬

‫ﺗﻜﻮن ﻥﺴﺒﺔ اﻹﺱﻔﻠﺖ ) ‪ ( % ٧ -٤‬ﺑﺎﻟﻨﺴﺒﺔ ﻟﺤﻔﺮﻳﺎت اﻟﺘﺮﻥﺸ ﺎت وﺗﻜ ﻮن ﻋﻠ ﻰ ﻃﺒﻘﺘ ﻴﻦ وﺗﻔ ﺮد آ ﻞ ﻃﺒﻘ ﺔ ﻋﻠ ﻰ ﺡ ﺪة وﻳﺠ ﺐ‬ ‫رش اﻟﻄﺒﻘﺔ اﻹﺱﻔﻠﺘﻴﺔ ﺑﻤﺎدة اﻟﺮﺑﻂ اﻟﺴﺮﻳﻊ اﻟﺘﺠﻤ ﺪ ) ‪ ( RC2‬وذﻟ ﻚ ﺑﻤﻌ ﺪل ‪ ٢ : ١‬آ ﺞ ‪ /‬م وﻳﺠ ﺐ اﻟﻬ ﺮس ﺡﺘ ﻰ اﻟﻮﺻ ﻮل‬ ‫إﻟ ﻰ ‪ % ٩٥‬ﻣ ﻦ اﻟﻜﺜﺎﻓ ﺔ اﻟﻌﻈﻤ ﻰ ﺑﻮاﺱ ﻄﺔ اﻟﻤﺴ ﺘﺨﺪم ﻋ ﻦ ‪ ١٣٩‬درﺟ ﻪ ﻣﺌﻮﻳ ﺔ و أﻻ ﺗﺰﻳ ﺪ ﻋ ﻦ ‪ ١٦٢‬درﺟ ﺔ ﻣﺌﻮﻳ ﺔ أﺙﻨ ﺎء‬ ‫اﻟﻔﺮد‪.‬‬

‫‪Page 17 of 52‬‬



‫ﻳﻐﻠﻖ اﻟﻄﺮﻳﻖ ﻟﻤﺪة ﻻ ﺗﻘﻞ ﻋﻦ ‪ ٢٤‬ﺱﺎﻋﺔ ﺑﻌﺪ وﺿﻊ اﻟﻄﺒﻘ ﺔ اﻟﻨﻬﺎﺋﻴ ﺔ وﻻ ﻳﺴ ﻤﺢ ﺑ ﺎﻟﻤﺮور ﻋﻠﻴ ﺔ ﻗﺒ ﻞ ذﻟ ﻚ ‪ -‬ﻳﻤﻨ ﻊ ﻣﻨﻌ ًﺎ ﺑﺎﺗ ًﺎ‬ ‫اﺱﺘﻌﻤﺎل اﻟﻌﻤﺎل ﻓﻲ ﻓﺮد اﻹﺱﻔﻠﺖ ﺡﻴﺚ ﺗﻮﻓﺮت ﻓﻲ اﻷﺱﻮاق ﻓﺮادات ذات أﺡﺠﺎم ﺻﻐﻴﺮة ﻟﺴﻔﻠﺘﺔ اﻟﺘﺮﻥﺸﺎت ﻣ ﻦ ﻋ ﺮض ‪٤٠‬‬ ‫ﺱﻢ ﻓﻤﺎ ﻓﻮق وذﻟﻚ ﻟﻠﺤﺼﻮل ﻋﻠﻰ ﺱﻄﺢ ﻣﺘﺠﺎﻥﺲ ذو ﻣﻨﺴﻮب واﺡﺪ ﻣﻊ اﻹﺱﻔﻠﺖ اﻟﻘ ﺪﻳﻢ ﻣ ﻊ اﻟﺤ ﺪﻳﺚ ﺑﻄﺮﻳﻘ ﺔ ﺱ ﻠﻴﻤﺔ ‪ .‬أﻣ ﺎ‬ ‫ﺑﺎﻟﻨﺴﺒﺔ ﻟﻠﺘﻮاﺻﻞ ﻳﻠﺘﺰم اﻟﻤﻘﺎول اﻟﺘﺰاﻣﺎ ﺗﺎﻣ ًﺎ ﻗﺒﻞ وﺿﻊ اﻹﺱﻔﻠﺖ ﺑﻘﺺ ﺟﻮاﻥﺐ اﻟﺤﻔﺮ وﺑﺸﻜﻞ ﻋﻤﻮدي ﺡﺘ ﻰ ﻳﻨﻜﺸ ﻒ ﺱ ﻄﺢ‬ ‫ﺟﺪﻳﺪ وآﺬﻟﻚ أﻳﻀﺎ ﻗﺺ ﺟﻮاﻥﺐ اﻟﺤﻔﺮ ﺑﻴﻦ ﻋﻤﻞ ﻳﻮﻣﻴﻦ ﻣﺘﺘﺎﺑﻌﻴﻦ ﻣ ﻦ اﻟﺴ ﻔﻠﺘﺔ وﺗﻨﻈﻴ ﻒ اﻟﺠﻮاﻥ ﺐ ﻣ ﻦ أي ﻣ ﻮاد ﺱ ﺎﺋﺒﻪ ﻣ ﻊ‬ ‫اﺱﺘﻌﻤﺎل اﻟﻤﻌﺪات اﻟﻤﻴﻜﺎﻥﻴﻜﻴﺔ وآﺬﻟﻚ ﻳﺠﺐ ﻋﻠﻰ اﻟﻤﻘﺎول أﻳﻀﺎ أن ﻳﻘﻮم ﺑﺪهﺎن هﺬﻩ اﻟﻔﻮاﺻﻞ ﺑﻤﺎدة اﻹﺱﻔﻠﺖ اﻟﺴﺮﻳﻊ اﻟﺘﺠﻤﺪ‬ ‫) ‪ ( RC2‬وذﻟﻚ ﺡﺘﻰ ﻳﺘﻢ اﻟﺘﺮاﺑﻂ ﺑﻴﻦ اﻹﺱﻔﻠﺖ اﻟﻘﺪﻳﻢ واﻟﺠﺪﻳﺪ ‪.‬‬ ‫إﻋﺎدة اﻷرﺻﻔﺔ‬ ‫ﻳﻠﺘﺰم اﻟﻤﻘ ﺎول ﺑ ﺎن ﻳﻘ ﻮم ﺑﺈﺻ ﻼح أي ﺥﻠ ﻞ ﻓ ﻲ اﻷرﺻ ﻔﺔ ﻳﻨ ﺘﺞ ﺱ ﻮاء آ ﺎن ﻓ ﻲ اﻟ ﺒﻼط أو ﻓ ﻲ اﻟﺒ ﺮ دورات ﺡﻴ ﺚ ﻳ ﺘﻢ إزاﻟ ﺔ‬ ‫اﻷﺟﺰاء اﻟﺘﺎﻟﻴﺔ و إﻋﺎدة وﺿﻌﻬﺎ إﻟﻰ ﺡﺎﻟﺘﻬﺎ اﻟﻄﺒﻴﻌﻴﺔ اﻟﺘﻲ آﺎﻥﺖ ﻋﻠﻴﻬﺎ وآ ﺬﻟﻚ اﻻﻟﺘ ﺰام ﺑﺈﻋ ﺎدة اﻟﻤﻨ ﺎﻃﻖ اﻟﻤﺮﺻ ﻮﻓﺔ ﺑﻤ ﻮاد‬ ‫ﺥﺎﺻﺔ ﻓﻲ ﻣﻨﻄﻘﺔ وﺱﻂ اﻟﺒﻠﺪ أو ﻏﻴﺮهﺎ ﺑﻨﻔﺲ ﻥﻮﻋﻴﺔ اﻟﻤﻮاد اﻟﻤﻮﺟﻮدة ﻋﻠﻰ اﻟﻄﺒﻴﻌﺔ و ﻋﻠﻰ اﻟﻤﻘﺎول أﻳﻀﺎ اﻟﻤﺤﺎﻓﻈ ﺔ ﻋﻠ ﻰ‬ ‫اﻷﺵﺠﺎر و اﻟﻤﺰروﻋﺎت و أﺡﻮاض اﻟﺰرع وﻳﺘﺤﻤﻞ أي إﺿﺮار ﺗﻨﺘﺞ ‪.‬‬ ‫إﻋﺎدة اﻟﻤﻮﻗﻊ إﻟﻰ ﺡﺎﻟﺘﻪ اﻟﻄﺒﻴﻌﻴﺔ‬ ‫ﻋﻠﻰ اﻟﻤﻘﺎول إﻋﺎدة اﻟﻄﺮﻳ ﻖ إﻟ ﻰ ﺡﺎﻟﺘ ﻪ اﻟﻄﺒﻴﻌﻴ ﺔ اﻟﺘ ﻲ آ ﺎن ﻋﻠﻴﻬ ﺎ ﻗﺒ ﻞ ﺑ ﺪء اﻟﻌﻤ ﻞ ﺑﻤ ﺎ ﻓ ﻲ ذﻟ ﻚ اﻟ ﺪهﺎﻥﺎت وﻋﻴ ﻮن اﻟﻘﻄ ﻂ‬ ‫وﺥﻼﻓﺔ وﻳﻠﺘﺰم اﻟﻤﻘﺎول ﺑﺘﻨﻈﻴﻒ اﻟﻤﻮﻗﻊ ﺟﻴﺪًا ﻣﻦ ﺟﻤﻴﻊ اﻷﺗﺮﺑﺔ و اﻟﻤﺨﻠﻔﺎت وذﻟﻚ ﺑﺎﺱﺘﺨﺪام اﻟﻤﻌﺪات اﻟﻤﻴﻜﺎﻥﻴﻜﻴﺔ اﻟﻤﻌﺘﻤ ﺪة‬ ‫ﺑﺤﻴﺚ ﻳﻜﻮن اﻟﺸﺎرع ﻥﻈﻴﻔ ًﺎ ﺥﻼل ﻣﺪة اﻟﺘﺼﺮﻳﺢ اﻟﻤﻤﻨﻮح ﻟﻪ‪.‬‬ ‫‪CONCRETE:‬‬ ‫ﺗﺘﻜﻮن ﺥﻠﻄﺎت اﻟﺨﺮﺱﺎﻥﺔ ﻟﻠﻤﺘﺮ اﻟﻤﻜﻌﺐ اﻟﻮاﺡﺪ آﺎﻵﺗﻲ‪:‬‬ ‫‪ (١‬اﻟﺨﺮﺱﺎﻥﺔ اﻟﻌﺎدﻳﺔ )‪ ٠٫٨‬م‪ ٢‬ﺑﺤﺼﻰ ﻣﺘﺪرج ‪٠٫٤ ،‬م‪ ٣‬رﻣﻞ ﻥﻈﻴﻒ‪ ٢٥٠ ،‬آﺠﻢ أﺱﻤﻨﺖ(‪.‬‬ ‫‪ (٢‬اﻟﺨﺮﺱﺎﻥﺔ اﻟﻤﺴﻠﺤﺔ )‪٠٫٨‬م‪ ٢‬ﺑﺤﺼﻰ ﻣﺘﺪرج ‪٠٫٤ ،‬م‪ ٣‬رﻣﻞ ﻥﻈﻴﻒ‪ ٣٥٠ ،‬آﺠﻢ أﺱﻤﻨﺖ(‪.‬‬ ‫ﺗﻘﺪﻳﻢ ﻋﻴﻨﺎت ﻣﻦ اﻟﺤﺼﻰ واﻟﺮﻣﻞ ﻟﻺﻋﺘﻤﺎد ﻣﻦ ﻗﺒﻞ اﻟﻤﻬﻨﺪس اﻟﻤﺸﺮف‪.‬‬ ‫‪• 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.‬‬ ‫‪• Concreting shall not be allowed with out vibration at any time.‬‬ ‫‪• Curing of concrete shall be done by gunny bags for curing compound.‬‬

‫‪• 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.‬‬ ‫‪• Water shall be free from silt, organic matter, alkalies or other impurities.‬‬ ‫‪Page 18 of 52‬‬

‫‪7‬‬



• The average grain size of sand is 0.35mm and the mud content shall not be more than 5%. • 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. • 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. • All lean concrete under reinforced base to be premixed from factory with 250 kg cement/M2 of concrete minimum strength 14 N/mm2. • Lean concrete 15 Cm thick shall be used all around the 15 Cm Dia P.V.C Pipes running underground. • 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). • Sand should be coarse grained, clean and free from all foreign matter. • Aggregate should be well graded (19mm Max size), clean and free from all foreign matter. • All steel reinforcing bar to be high yield deformed type conforming to metric BS 444.9 Min yield strength 410 N/mm2. • Reinforcement cover with in concrete to be as follows: Roof Slab 20 mm, Footing 60mm, others 40 mm. 8

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

Page 19 of 52




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 0 1 2 3 4 5 6 7

Description of Soil Type Sound hard rock, un-weathered Very dense and / or cemented sands coarse gravel and cobbles Dense fine sand, very hard silts and clays (may be preloaded) Dense clays, sands and gravel, hard silts and clays Medium dense coarse sandy gravel, very stiff to had silts and clays Medium dense coarse sand & sandy gravels, stiff to very stiff silts and clays Loose to medium dense fine to coarse sand, firm to stiff clays & silt Loose fine sand, alluvium, loess, soft firm clays, varied clays, fill

Probe Values Ibs (N-m)

SEC Soil Type Classification

N. A. 750-1600 (90-208) 600-750 (78-98) 500-600 (65-78) 400-500 (52-65) 300-400 (39-52) 200-300 (26-39) 100-200 (13-26)

Rock / Dense Soil

Medium Soil

Loose Soil

MINIMUM BREAKING CAPACITY OF SOIL IS 1.5 KG/CM2 9

UNIT SUBSTATION, PACKAGE SUBSTATION AND R.M.U. •

Unit Substation, Package Substations and R.M.U. with out boundary wall. Gate which is likely to be damaged by traffic shall be provided with protective barriers.

•

Sub-Base layer of 20cm thick will compacted under equipment foundation (min. 1.5 Kg/cm²)

•

Lean concrete of 10 cm thick should be placed under equipment foundation.

Page 20 of 52




DRAWINGS UNIT SUBSTATION: DRAWING NO. 1 300/500 3 WAYS OVER ALL PLAN DRAWING NO. 1A 300/500 4 WAYS OVER ALL PLAN DRAWING NO. 2 300/500 PLAN AND SIDE VIEW DRAWING NO. 3 300/500 RINFORCEMENT DETAILS DRAWING NO. 4 1000 3 WAYS OVER ALL PLAN DRAWING NO. 4A 1000 4 WAYS OVER ALL PLAN DRAWING NO. 5 1000 PLAN AND SIDE VIEW DRAWING NO. 6 1000 RINFORCEMENT DETAILS DRAWING NO. 7 1500 3 WAYS OVER ALL PLAN DRAWING NO. 7A 1500 4 WAYS OVER ALL PLAN DRAWING NO. 8 1500 PLAN AND SIDE VIEW DRAWING NO. 9 1500 RINFORCEMENT DETAILS

Page 21 of 52

Note:−

3

Soil Bearing Capicity 150 KN/M

2

2

Cement 350 Kg/m Concrete Compresive Strength 300 Kg/cm

RMU 3 Ways


LIFTING HOOK

LT

TRANSFARMER



Page 22 of 52

Note:−

3


2

2


RMU 4 Ways


LIFTING HOOK

LT

TRANSFARMER



Page 23 of 52




SIDE VIEW FRONT VIEW

CABLE ENTRY

PLAN

LT

TRANSFARMER

G.L

LIFTING HOOK

G.L

CABLE ENTRY

G.L


Page 24 of 52




DIA 16mm

2−12 DIA 200mm C/C (TYPE)

G.L G.L

C


DRAWINGS A

LIFTING LUG (HOT DIP GALVANIZED)

SECTION C − C

2−12 DIA 200mm C/C (TYPE) STIRRUPS 10 DIA 150mm C/C (TYPE)

STIRRUPS 10 DIA 150mm C/C (TYPE)

CABLE ENTRY

SECTION B − B

G.L



PLAN

DRAWING NO. 10 300/500 3 & 4 WAYS OVER ALL PLAN DRAWING NO. 11 300/500 PLAN AND SIDE VIEW DRAWING NO. 12 300/500 RINFORCEMENT DETAILS DRAWING NO. 13 1000/1500 3 & 4 WAYS OVER ALL PLAN

SECTION A − A

B

B

PACKAGE SUBSTATION TYPE A:

C

A

DRAWING NO. 15 1000/1500 PLAN AND SIDE VIEW



DRAWING NO. 14 1000/1500 PLAN AND SIDE VIEW

Page 25 of 52

Note:−


2

LIFTING HOOK

RMU 3 Ways


Cement 350 Kg/m3 2 Concrete Compresive Strength 300 Kg/cm

LT

TRANSFORMER



Page 26 of 52

Note:−

3


2

2

RMU 4 Ways



LIFTING HOOK

LT

TRANSFORMER



Page 27 of 52




SIDE VIEW

FRONT VIEW

G.L

CABLE ENTRY

PLAN

LT

TRANSFORMER

G.L

G.L

LIFTING HOOK

CABLE ENTRY

G.L


Page 28 of 52

B

SECTION A − A

PLAN

LT

TRANSFORMER

B

G.L

DIA 16mm


G.L


C

A

STIRRUPS C/C (TYPE) 10 DIA 150mm


SECTION C − C

CABLE ENTRY

SECTION B − B

CABLE ENTRY

G.L

G.L





C

A




Page 29 of 52

Note:−

3


2

2

LIFTING HOOK

RMU 3 Ways



LT

TRANSFARMER



Page 30 of 52

Note:−

3


2

2

LIFTING HOOK

RMU 4 Ways



LT

TRANSFARMER



Page 31 of 52




SIDE VIEW FRONT VIEW

CABLE ENTRY

G.L G.L

PLAN

LT

TRANSFARMER

LIFTING HOOK

CABLE ENTRY

G.L


Page 32 of 52

SECTION A − A

PLAN

LT

TRANSFARMER

B

B

DIA 16mm

G.L


G.L

C

A



G.L


SECTION C − C

CABLE ENTRY


SECTION B − B

CABLE ENTRY


G.L



C

A




Page 33 of 52




DRAWINGS PACKAGE SUBSTATION TYPE A: DRAWING NO. 10 300/500 3 & 4 WAYS OVER ALL PLAN DRAWING NO. 11 300/500 PLAN AND SIDE VIEW DRAWING NO. 12 300/500 RINFORCEMENT DETAILS DRAWING NO. 13 1000/1500 3 & 4 WAYS OVER ALL PLAN DRAWING NO. 14 1000/1500 PLAN AND SIDE VIEW DRAWING NO. 15 1000/1500 RINFORCEMENT DETAILS

Page 34 of 52

LT

PLAN

TRANSFARMER

Note:− 3


2

2



LIFTING HOOK

RMU



Page 35 of 52




CABLE ENTRY G.L

LT

FRONT VIEW

CABLE ENTRY

LIFTING HOOK

PLAN

TRANSFARMER

RMU

G.L

SIDE VIEW

G.L


Page 36 of 52


LT

SECTION A−A

PLAN B

RMU

DIA 16mm


DETAIL−A

G.L



C

A



CABLE ENTRY

SECTION C−C

CABLE ENTRY

SECTION B−B

G.L



C

A

TRANSFORMER

B



Page 37 of 52

LT

PLAN

TRANSFARMER

Note:− 3


2

2



LIFTING HOOK

RMU



Page 38 of 52




CABLE ENTRY G.L

LT

FRONT VIEW

CABLE ENTRY

LIFTING HOOK

PLAN

TRANSFARMER

RMU

G.L

SIDE VIEW

G.L


Page 39 of 52


LT

SECTION A−A

PLAN B

RMU

LIFTING LUG (HOT DIP GALVANIZED) DIA 16 mm

DETAIL−A

G.L



C

A



CABLE ENTRY

SECTION C−C

CABLE ENTRY

SECTION B−B

G.L



C

A

TRANSFORMER

B



Page 40 of 52




DRAWINGS PACKAGE SUBSTATION TYPE B: DRAWING NO. 16 300/500 3 & 4 WAYS OVER ALL PLAN DRAWING NO. 17 300/500 PLAN AND SIDE VIEW DRAWING NO. 18 300/500 RINFORCEMENT DETAILS DRAWING NO. 19 1000/1500 3 & 4 WAYS OVER ALL PLAN DRAWING NO. 20 1000/1500 PLAN AND SIDE VIEW DRAWING NO. 21 1000/1500 RINFORCEMENT DETAILS

Page 41 of 52

LT

PLAN

TRANSFARMER

3


2

2



Note:−

LIFTING HOOK

RMU



Page 42 of 52




G.L

FRONT VIEW

CABLE ENTRY

PLAN

LIFTING HOOK

LT

TRANSFARMER

RMU

G.L

SIDE VIEW

CABLE ENTRY

G.L


Page 43 of 52

C

A

PLAN

SECTION A−A

B

RMU

DETAIL−A

DIA 16mm


G.L


2−12 DIA 200mm C/C (TYPE) 2−12 DIA 200mm C/C (TYPE)


C

A

SECTION C−C

SECTION B−B

G.L




LT

TRANSFORMER

B



Page 44 of 52

LT

TRANSFARMER

Note:− 3


2

2



PLAN

LIFTING HOOK

RMU



Page 45 of 52




FRONT VIEW

G.L

CABLE ENTRY

PLAN

LT

TRANSFARMER

RMU

LIFTING HOOK

G.L

SIDE VIEW

CABLE ENTRY

G.L


Page 46 of 52

C

A

B

SECTION A−A

PLAN

RMU

DETAIL−A


LIFTING LUG (HOT DIP GALVANIZED) DIA 16 mm

G.L

C

A



SECTION C−C

CABLE ENTRY

SECTION B−B

G.L




LT

TRANSFORMER

B



Page 47 of 52




DRAWINGS RING MAIN UNIT: DRAWING NO. 22 3 WAYS PLAN AND SIDE VIEW DRAWING NO. 23 3 WAYS RINFORCEMENT DETAILS DRAWING NO. 24 4 WAYS PLAN AND SIDE VIEW DRAWING NO. 25 4 WAYS RINFORCEMENT DETAILS

Page 48 of 52

LIFTING LUG

G.L

G.L

SEE DETAIL−A

LIFTING LUG

DETAIL−A

DIA 16mm


SIDE VIEW

G.L


FRONT VIEW

CABLE ENTRY

PLAN

RMU

G.L



Page 49 of 52




SECTION C−C 12 DIA 150 mm C/C (TYPE)

SECTION A−A

PLAN

C

B

RMU

G.L

C

A A

B

12 DIA 150 mm C/C (TYPE)

SECTION B−B

G.L

G.L


Page 50 of 52

LIFTING LUG

G.L

G.L

SEE DETAIL−A

LIFTING LUG

DETAIL−A

DIA 16mm


SIDE VIEW

G.L


FRONT VIEW

CABLE ENTRY

PLAN

RMU

G.L



Page 51 of 52




SECTION C−C 12 DIA 150 mm C/C (TYPE)

SECTION A−A

PLAN

C

B

RMU

G.L

C

A A

B

12 DIA 150 mm C/C (TYPE)

SECTION B−B

G.L

G.L


Page 52 of 52

PART1

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