TCS-M-112-01-R0

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RI 112 1118 10110.0

GENER L PURPOSE FEN ING

PROPRIETARYINFORMATIONThis document contains proprietary information developed by and for exclusive use of Saudi ElectricityCompany. Your acceptance of the document is an acknowledgement that it must be used for the identifiedpurpose/application and during the period indicated. It cannot be used or copied for any other purposes norreleased to others without prior written authorization of Saudi Electricity Company. Saudi Electricity Companywill not be responsible for misuse and/or misapplication, and any harm resulting therefrom. Saudi ElectricityCompany also reserves the right to take any necessary actions to protect its interest against unauthorized use.

ORIGINATED BY c APPROVED BY

Engr. Khalaf M.AI-Ma ashiDivision ManagerEngineering Support

ngr. Abdullah M. AI-GarniDepartment Manager

Transmission StandardsSpecificationsDate of Approval:

Engr. Saleh N.AI-SohaibaniExecutive DirectorEngineering Projects

, TRANSMISSION CONSTRUCTION STANDARD JTCSM11201 RO/JOA PAGE NO. 1 OF 12

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PAGE NO. 2 OF 12TCSM11201R0/JQA

TRANSMISSION CONSTRUCTION STANDARD TCS-M-112.01, Rev. 0

Date of Approval: December 03, 2008

TABLE OF CONTENT

1.0 SCOPE

2.0 GENERAL REQUIREMENTS

3.0 FENCING SYSTEM COMPONENTS

4.0 CONSTRUCTION

4.1 Grading

4.2 Excavation

4.3 Post4.4 Bracing in the Plane o f Fence

4.5 Gates

4.6 Barbed Wire

4.7 Top Rail

4.8 Tension Wire

4.9 Chain Link Fence Fabric

4.10 Stretcher Bars and Bands

4.11 Fence Anchor

4.12 Bolts

4.13 Concrete

4.14 Miscellaneous

5.0 STORAGE OF MATERIAL

6.0 CLEAN UP

7.0 REFERENCES

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1.0 SCOPE

1.1 This Standard covers the construction of General Purpose and Perimeter Fencing for

non-vital or non-sensitive facilities.

1.2 The types of fencing that this standard will apply are listed below. However, the type

of fence shall be determined by the proponent organization as to operational, safety

and security requirement not covered by HCIS (SSD).

The following Table lists the different types of fencing:

Barbed WireFencing

Type

Height of

FencingFabric mm

Top

Rail

Brace

Post (l) No. ofsupporting

Arms

No. ofStrands

Continues

ConcreteAnchor

I 2440 YES YES 2 6 YES

II 2440 YES YES 2 6 NO

III 2440 NO NO 2 6 NO

IV 2135 NO NO 1 3 NO

V 2135 NO NO 0 0 NO

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2.0 GENERAL REQUIREMENTS

2.1 Fencing shall be built in strict accordance with the referenced Engineering Standard

Drawings and specification in a workman like manner.

2.2 The type of fencing required is dependent upon operational, safety and security

requirements as determined by the Proponent Organization.

2.3 Type I fence shall be used for all facilities where security is of concern and the

bottom of the chain link fence fabric tied to a continuous concrete anchor.

2.4 All fencing components except concrete and asphalt felt shall be hot-dip galvanized

in accordance with the relevant ASTM specifications. (Vinyl -clad fabric, wires andgate in filling may be substituted for use at severely corrosive locations when

specified).

2.5 Brace posts shall be installed to all type I and Type II 1ine posts. Pull posts, with a

minimum outside diameter of 73mm, shall be installed as line posts for Types III, IV

and V fencing at l00 m centers of uninterrupted fencing runs.

2.6 Fence posts shall be grounded and gate frame including plunger rod shall be bonded

in accordance with TES-P-119.10 unless otherwise specified in the project

specifications.

2.7 Concrete for footings and fence anchor shall have a minimum compressive strength

at 28 days in accordance with exposure requirement of concrete as per 70-TMSS-03.

2.8 The post/foundation interface shall be treated as indicated in Footing Details given in

70-TMSS-02.

2.9 Footings for all posts shall extend 100 mm below the end of the post.

2.10 If precast fence post footings are used, backfill shall be compacted to meet or exceed

the existing soil density.

2.11 Excavation for fence posts shall not be started prior to completion of final grading.

2.12 Warning signs "Danger High Voltage with Bone and Skull" and "Danger High

Voltage Keep Away" shall be installed on each side of the fence and at the gates as

per requirement of TES-P-119.13.

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3.0 FENCING SYSTEM COMPONENTS

3.1 All fencing components including all necessary fittings and Accessories shall meet

or exceed the requirements of 70-TMSS-02.

3.2 The fencing system posts shall be Schedule 40, ASTM A53 galvanized steel pipe of

the following sizes:

CLASSIFICATION OF POSTS

NOMINAL

DIAMETER

mm

ACTUAL

O.D.

mm

Brace (post and rail) 31.75 42.2Line 50.8 60.3

End 63.5 73

Corner 63.5 73

Gates as follows:

Single gate up t o 1.8 m wide 63.5 73

Double gate up t o 3.7 m wide 63.5 73

Single gate over 1.8 m t o 4.0 m wide 88.9 101.6

Double gate over 3.7 m t o 8.0 m wide 88.9 101.6

3.3 Post heights from finished grade to top of post (without extension arm) shall be as

indicated in the table below:

FENCE TYPE I II III IV V

Post :HEIGHT IN MM.

Walk Gate 2465 2465 2700 2455 2165

End & Drive 2760 2760 2700 2455 2165

Line 2400 2400 2400 2100 2165

Corner 2465 2465 2465 2100 2165

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3.4 Concrete for foundation shall be ready mixed concrete conforming to 70-TMSS-03

per exposure requirement.

3.5 Field mixed concrete, if unavoidable, shall also meet the requirements of TCS-Q-

113.03 and 70-TMSS-03 in all respect including the following:

3.5.1 Concrete field mix design, trial mix test results, test results of aggregates

including mixing water shall be submitted to SEC for review and approval.

3.5.2 All materials tested for a field mix concrete shall be insured as a

representative sample of materials delivered on site.

3.5.3 Batching of concrete ingredients shall be by weight. Volume batching shallnot be permitted.

3.5.4 Water dispensing equipment shall be provided with calibrated water gauge.

3.5.5 Field mixing shall be by the use of mechanical mixer. Manual mixing shall

not be permitted.

3.6 Reclaimed material shall be used only on the written approval by the SEC

Representative.

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4.0 CONSTRUCTION

4.1 Grading

4.1.1 Fence shall be installed to conform to the alignment and finished grade as

indicated on the drawings. Where necessary, the fence grade shall be adjusted

to fit the ground contour by slipping the fence fabric links. On steep grades,

the posts may be set normal to the slope, provided transition sections are

constructed.

4.1.2 Ground surface irregularities shall be machine graded by the Contractor as

required to eliminate frequent changes in vertical alignment and to provide a

smooth profile for the fence. Clearance below the bottom of the fence shallnot exceed 25 mm.

4.1.3 The plan and profile of each reach of fence between corner posts or between

corner posts and gate posts shall be straight. The Contractor shall grade

ground surfaces as required to achieve the straight profiles before each reach

of fence is installed.

4.2 Excavation

4.2.1 Excavation for fence posts foundation shall not be started unless final grading

is completed. Prior to excavation, the Contractor shall verify from SEC thelocations of underground utilities that exist in the area.

4.2.2 Excavate or drill holes for post footings in firm, undisturbed or compacted

soil with all necessary precautions to ensure that any underground utility in

the area will not be damaged.

4.2.3 Holes shall have a diameter of not less than 250mm for line posts and 300mm

for corner posts, end, and terminal or pull posts and gate posts. Depth of

holes shall be not less than 1000 mm.

4.2.4 All loose materials inside the excavated holes shall be removed prior to

setting of fence posts and concrete pouring.

4.2.5 Excavated materials shall be removed away from around the holes.

4.2.6 All safety precautions during excavation shall be adhered to in accordance

with the requirements of the SEC Accident Prevention Manual and

Construction Safety Manual.

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4.3 Post

4.3.1 Posts shall extend 900 mm into concrete footings as measured from the

ground surface.

4.3.2 All posts shall be equipped with water excluding top caps or extension arms.

4.3.3 All line posts shall be equally spaced at intervals of not more than 3 m on

centers in the line of fence. Posts shall be plumbed with tops properly aligned

except as provided on Clause 4.1.1.

4.3.4 Terminal posts (end, corner, and pull post) shall be installed at the beginning

and end of each continuous length of fence and at abrupt changes in verticaland horizontal alignments for all types of fence.

4.3.5 Brace posts shall be attached to all SEC Type I and Type II fencing line posts

at a point 1500 mm above ground level and extend downward toward the

inside of the fence at 45 degrees in a vertical plane which is perpendicular to

the plane of the fence. For Types III, IV, and V fencing, pull posts shall be

installed at 100 m centers of uninterrupted fencing runs.

4.3.6 Where posts are set in earth, concrete foundations 1000 mm deep shall be

provided. If sound bedrock is encountered, post excavation shall be at least

600 mm into the rock and the diameter of the hole shall be a minimum of 25mm greater than the cross section of the post. Non-shrink grout shall be used

to fill the void.

4.4 Bracing in the Plane of Fence

4.4.1 Each brace assembly shall consist of one top and one intermediate

compression member both of 42.2 mm OD Pipe and one diagonal truss rod of

at least 10 mm diameter. For Type I and Type II fencing, the top rail is the

top compression member. Pipe used for the compression members shall be of

one piece without couplings in the bracing panel.

4.4.2 End posts shall be braced to the first line post with a complete brace

assembly.

4.4.3 Corner and pull posts shall be braced in both direction to the two nearest line

posts with one complete brace assembly to each line post.

4.4.4 Each gate post shall be braced by a horizontal pipe brace and an adjustable

truss rod extending to an adjacent line post.

4.4.5 Brace in line of fence shall be installed before tension wires on posts aretightened. When truss rods and tension wires are subjected to proper tension,

all posts shall be plumbed except as provided on para. 4.1.1.

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4.5 Gates

4.5.1 Gates shall be of welded or bolted construction, adequately braced and

provided with adjustable diagonal tension bars to prevent sagging. Gates

shall be installed so that they cannot be removed without dismantling of the

hardwares.

4.5.2 Gate hinges shall be of heavy construction and allow the gate to swing 180

degrees (90 degrees either way from closed position). All gates shall be

provided with outer gate holders and closed position plunger rod receiver.

Rod catch shall consist of a roadway plate with anchor set in concrete and

arranged to engage the plunger rod.

Holders shall consist of mechanical devices for securing and supporting the

free end of the gates when in the full open position. Holders shall be mounted

on pipe posts filled with concrete and set in concrete foundations.

4.5.3 All gates shall be completely equipped with a latch of the plunger bar type.

The latch shall be so constructed that the plunger bar may be kept in the

raised position while the gate is open. All gates shall be equipped with

attachments for padlocking. The padlock has to be readily accessible from

both sides of the gate. Padlock shall be as per SOW/TS.

4.5.4 The top rail and barbed wire for SEC Type I and Type II Fencing walk gates

shall be continuous over the gate and not swing with the gate.

4.5.5 Type III and IV walk gates and gates wider than 1.8 m for all types (except

Type V) shall be constructed with the gate frame posts extending 300 mm

above the gate frame for the attachment of 3 strands of barbed wire.

4.5.6 Barbed wire where required shall be attached to gate extended frames by

means of an eye bolt.

4.5.7 Gate for Type V fencing shall not be topped with barbed wire.

4.6 Barbed Wire

Barbed wire shall be held in the extension arm slots by means of lugs or lock wire.

Holding the barbed wire in the slots by means of tension in the wire is not permitted.

4.7 Top Rail

The top rail (42.2 mm OD pipe) in lieu of tension wire shall be used for SEC Type I

and II fencing and shall be continuous except over drive gates. One expansioncoupling shall be used for every 30 meters of rail.

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4.8 Tension Wire

4.8.1 Tension wire shall be secured to beginning and end posts by means of a

winding bracket. The tension wire shall also be attached to the line posts by

tie wire wrapped around the post and secured to the tension wire by three

complete turns on each side of the post.

4.8.2 Top and bottom tension wires shall be installed before the fabric. Bottom

tension wires shall be installed approximately 50 mm above grade and shall

be attached to each post and securely anchored at terminal and gate posts.

4.9 Chain Link Fence Fabric

4.9.1 The fencing fabric for SEC Type I and Type II Fencing shall be attached to

top rails by means of tie wires spaced at intervals not exceeding 600 mm.

4.9.2 The fencing fabric shall be attached to the tension wire by means of clip or

tie wires spaced at intervals not exceeding 300 mm.

4.9.3 Attachment of fence fabric to the line posts for all type of fence shall not

exceed 355 mm on centers. Tie knots shall be made on the security side of

the fence.

4.9.4 Rolls of chain link fabric shall be joined by weaving a single strand into theends of the rolls to form a continuous mesh pattern.

4.9.5 Chain link fabric shall be cut and fastened independently at the terminal end,

corner or gate post by the use of stretcher bars and bands.

4.9.6 Fabric for gate shall be the same fabric used for fence, unless otherwise

specified. Install fabric with stretcher bars at vertical edges and tie at top and

bottom edges of fabric. Attach stretcher bars to gate frames with hook bolt at

not more than 355 mm on center.

4.10 Stretcher Bars and Bands

Stretcher bars shall be provided at each gate, end, corner, and pull post. Each

stretcher bar shall be threaded through the fabrics and anchored to the post at 355

mm centers by bar bands.

4.11 Fence Anchor

The fence anchor shall only be used for SEC Type I Fencing and shall be constructed

according to Standard Drawing TA-800013.

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4.12 Bolts

All hardware attachment bolts shall have the threaded end peened or burred so that

removal will be difficult. Bolts shall be installed so that nuts will be at the security

side of the fence.

4.l3 Concrete

4.13.1 Concrete foundations and fence anchor shall conform to the exposure

requirement of 70-TMSS-03.

4.13.2 Each foundation shall be cured at least 72 hours before further work is done

on the post.

4.13.3 Concrete foundations shall have the same cross-section throughout the

footing depth.

4.13.4 Concrete foundations shall be circular, minimum 250 mm in diameter for line

and brace posts and with a dimension not less than the post outside diameter

plus 225 mm for end, pull, corner, and gate posts except that foundation in

bedrock shall be minimum of 25 mm larger than the OD (outside diameter)

of the post.

4.13.5 Foundations shall extend above the ground surface and shall be crownedapproximately 25 mm.

4.14 Miscellaneous.

4.14.1 When fully constructed, the barbed wire, tension wire, chain link fabric, and

truss rods shall be taut.

4.14.2 Fabric shall be stretched taut so that a pull of 70 kilograms at the middle of a

panel will not lift the bottom of the fabric more than 150 mm. from the

finished grade.

4.14.3 All fence posts except alternate line post shall be connected to the grounding

grid of the fenced area in accordance with TES-P-119.10 unless otherwise

specified as not required in the SOW/TS. Also, the plunger rod shall be

bonded to the gate frame which in turn shall be bonded to the gate post.

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5.0 STORAGE OF MATERIAL

Materials shall be carefully handled during all phases of the work and shall be stored by

placing them on suitable blocking materials, so that no part of the item shall be in contact

with the earth.

Blocking material can be a minimum of 100xl00 mm lumber, used or damaged poles or

other similar materials which are free of protruding nails or other metal which could damage

any materials stored upon them. These items of blocking should be obtained and stored for

use as required before any materials are delivered to the storage yard.

6.0 CLEAN UP

All excess materials and other debris resulting from the fence construction shall be promptly

removed from the jobsite.

7.0 REFERENCES

7.1 Standards

7.1.1 TES-P-119.10 Substation Grounding

7.1.2 70-TMSS-02 Fence Chain Link

7.1.3 70-TMSS-03 Normal Weight Ready-Mixed Portland Cement Concrete

7.2 Drawings

TA-800013 Chain Link Boundary Fence

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