Chain Link Fence: Non-Restrictive Specifications

This non-restrictive specification is written in performance style, emphasizing strength and coatings which includes pipe alternates to the roll-formed sections. All components shown are non-proprietary, commercially available in conformance with ASTM Standards. Included in each specification is an option to mechanically drive the C-Section post 3' 0'' into the ground.

This construction method has been used for many years and is now specified and used by several state highway departments and many power companies. The 3'0'' depth has evolved through actual experience as the best overall post setting. Drive construction means less heavy equipment on graded and finished surfaces, less excess dirt from post holes, and less chance for posts heaving in frost. When designing for high security application, additional barbed wire and fabric with smaller mesh openings should be considered.

Scope

This specification includes chain link fence materials, including fabric and framework.

Fabric

Chain Link Fabric shall be zinc coated per ASTM-A392 Class 2, or aluminum coated per ASTM-A491. Fabric shall be woven from 9 gauge (coated size) wire in 2'' mesh. Fabric 60'' (1.52m) high and under shall be knuckled at both selvages. Fabric 72'' (1.83m) high and over shall be knuckled at one selvage and twisted and barbed at the other selvage.

Top and Brace Rail

Top and brace rails shall be roll-formed section of 1.625' X 1.25'' channel shaped rail with min. vertical bending strength of 263 lbs. on 10' span continuous coated 4 oz. of zinc coated per ASTM-F1043, or 1.66 O.D., Standard weight Schedule 40 galvanized pipe with min. vertical bending strength of 235 pounds on 10' span coated with 1.8 ounces of hot dipped zinc in accordance with ASTM-F1083. Top rail couplings 6'' min. in length shall be spaced at max. 21' centers. Fabric tie wire shall be spaced at 24' max. centers.

Line Posts

Line posts shall be ''C'' section roll-formed from steel conforming to ASTM-A1011 Grade 50, 1.875 X 1.625'' with min. bending strength of 274 lbs. under a 6' cantilever load continuous coated 4 oz. of zinc coated per ASTM-F1043, or 2.375'' O.D. Standard weight Schedule 40 galvanized pipe with min. bending strength of 234 lbs. under a 6' cantilever load coated with 1.8 oz. of hot dipped zinc in accordance with ASTM-F1083.

General

Posts and rails shall be roll-formed, open seam, self-draining shapes or standard weight Schedule 40 pipe, all galvanized in accordance with ASTM-F1043. All fittings shall be pressed steel or malleable iron and shall be hot dip galvanized conforming to ASTMA153. Tie wires shall be a min. of 9-gauge aluminum or 11-gauge galvanized steel. Line and terminal posts to be of sufficient length to allow for approx. 36'' settings into concrete footing.

Diameter of footings to be 10'' for line posts, and 12'' for terminal posts. Maximum spacing to be 10'0 unless noted on drawing. Elevation, property line stakes and grade stakes will be established by owner. Fence to follow ground line unless otherwise provided for in this specification. All material is subject to testing. Mill certificates will be submitted for approval upon request of owner.