![]() 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. In addition, the wire-like mesh bar has the characteristics of glazing anti-corrosion and durability, and the surface is reinforced by tempering, spraying, dipping, etc., and the anti-corrosion machine can be greatly enhanced.Construction of A High Security chain link Fence System It is mainly used for protection and protection of equipment and measures in factories, workshops, warehouses, public places and other occasions. It has an assembled overall frame structure, which is conducive to construction and convenient and quick to install. It is used for isolation protection and plays a very good role.īarbed wire fence, which is commonly referred to as "protective net", is a type of fence mesh product commonly used on both sides of urban roads. It is made of high-quality wire rods and mesh sheets welded together, which is more robust and stable. Wire mesh fence are more common protective net products, such as railway fence nets, highway fence nets, bridge construction, road construction and other fields.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |