KS D 7037, Class SWMA-C shall meet minimum breaking strengh and adherence of coating on ASTM A491. SECURING CHAIN LINK FENCE FABRICSĪSTM A392, Class 2, zinc-coated steel wire with minimum coating weight of 610 grams of zinc per square meter of coated surface or KS D 7011, SWMGS-7 or, ASTM A491, Type I, aluminum-coated steel wire or KS D 7037, Class SWMA-C. 3/8" diameter eye hook anchored into concrete footing at midpoint. Install bottom rail before chain link fabric. All failed posts shall be removed, replaced, and retested.īolt bottom rail to double rail ends and securely fasten double rail ends to the posts. When a post fails this test, make further tests on the next four posts on either side of the failed post. Post movement measured at the point where the force is applied shall be less than or equal to 19 mm from the relaxed position. Test fence post rigidity by applying a 222.4 newtons force on the post, perpendicular to the fabric, at 1.52 m above ground. Set driven posts to a minimum depth of 914 mm and protect with drive caps when setting. Group II line posts may be mechanically driven, for temporary fence construction only, if rock is not encountered. Thoroughly consolidate concrete and grout around each post, free of voids and finished to form a dome.Īllow concrete and grout to cure for 72 hours prior to attachment of any item to the posts. Make diameters of holes in solid rock at least 25 mm greater than the largest cross section of the post. Posts set in concrete shall be set in holes not less than the diameter shown on the drawings. Portions of posts not set in rock shall be set in concrete from the rock to ground level. Where solid rock is covered with an overburden of soil or loose rock, set posts to the minimum depth indicated on the drawing unless a penetration of 457 mm in solid rock is achieved before reaching the indicated depth, in which case terminate depth of penetration. Where solid rock is encountered with no overburden, set posts to a minimum depth of 457 mm in rock. Eliminate ground surface irregularities along the fence line to the extent necessary to maintain a 50 mm clearance between the bottom of the fabric and finish grade. Provide fabric continuous between terminal posts however, runs between terminal posts shall not exceed 152.4 m.Ĭlear all post holes of loose material. Terminal (corner, gate, and pull) posts shall be set at abrupt changes in vertical and horizontal alignment. Space line posts equidistant at intervals not exceeding 3 m. Group II, formed steel sections, size 42 mm, conforming to ASTM F1043, may be used as braces and rails if Group II line posts are furnished.Ĭlear the area on either side of the fence line. Group IC steel pipe, zinc-coated, shall meet the strength and coating requirements of ASTM F1043. Miscellaneous hardware coatings shall conform to ASTM A153/A153M unless modified.ĪSTM F1083, zinc-coated, Group IA, steel pipe, size NPS 1-1/4 or KS D 3507, zinc-coated. Tie wires for attaching fabric to tension wire on high security fences shall be 1.6 mm stainless steel. Secure arms by top tension wire or top rail and bolting.įurnish post caps in accordance with manufacturer's standard accessories.ĩ gauge steel tie wire for attaching fabric to rails, braces, and posts and match the coating of the fence fabric. Truss rods with turnbuckles or other equivalent provisions for adjustment.īarbed wire supporting arms of the 45 degree outward angle 3-strand or V 6 strand arm type and of the design required for the post furnished. Ferrous accessories shall be zinc or aluminum coated.įurnish truss rods for each terminal post. Post spacing shall conform to the recommended guidelines as set forth in the CLFMI "Wind Load Guide for the Selection of Line Post Spacing and Size" unless specified to exceed those guidelines.Īccessories conforming to ASTM F626. Gate post for the gate type specified subject to the limitation specified in ASTM F900 and/or ASTM F1184. Line posts and terminal (corner, gate, and pull) posts selected shall be of the same designation throughout the fence. Group III, ASTM F1043 steel H-section may be used for line posts in lieu of line post shapes specified for the other classes. Group IC steel pipe, zinc-coated with external coating Type A or Type B and Group II, roll-formed steel sections, meeting the strength and coating requirements of ASTM F1043 and ASTM A702. Group IA, with external coating Type A steel pipe. High security fence (chain link ) installation involves following five steps generally:Īll Fence Posts conforming to ASTM F1083, zinc-coated or KS D 3507. Construction of A High Security chain link Fence System
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