for Highway Construction Page 489 of 71 5 SECTION 610 – FENCES
610.01 Description.
Provide and erect fence and gates.
610.02 Materials.
Provide materials as specified: Nonstructural Concrete ................................................................................................................. 509 Barbed Wire ............................................................................................................................. 708.09 Woven Wire ............................................................................................................................. 708.10 Hardware for Barbed or Woven Wire Fence ............................................................................ 708.11 Metal Fence Posts ................................................................................................................... 708.12 Chain Link Fence ..................................................................................................................... 708.13 Wood F ence Posts .................................................................................................................. 710.08 For temporary construction fence, provide high- visibility orange high- density polyethylene mesh , at least 4 feet tall, with metal or wood support posts.
610.03 Construction Requirements.
Remove trees, brush, and other obstacles along the fence line. Remove and dispose of material as specified in 201. See standard drawing notes for additional construction requirements for each specific fence and gate type. Set posts plumb to the spacing and depth as specified, backfill, and firmly tamp. Set posts for chain- link fence in concrete. After the posts are set, stretch and fasten the wire fencing to wooden posts with staples or to steel posts with wire cl amps. Use Class 22 concrete for post and brace bases . Crown the surface of the concrete to drain. When drilling into rock is required to set a post, the Contractor may shorten the post if at least 12 inches of post is grouted in the rock. Consider the air temperature when stretching wire. In hot weather stretch the wire just tight enough to eliminate sags, and in cold weather stretch the wire very tight. In either temperature condition, do not stretch the woven wire so tight the pre- formed kinks in the horizontal wires are straightened. Provide 4 inch by 4 inch No. 2 Common Douglas Fir or Larch horizontal and inclined wood braces. Dap posts to receive the braces and anchor the ends of the brace with three 16- penny nails or a ⅜ inch by 4 inch steel dowel. Apply a coat of pentachlorophenol solution, chromated copper arsenate (CCA), or ammoniacal copper zinc arsenate (ACZA) to daps on the posts and the ends of the braces before assembly. Provide brace wires consisting of 2 loops of 9- gauge wire twisted to form a taut cable. Lightly notch the posts to position the wire and drive 3 staples at each notch to secure the wire. When using metal braces, securely splice the tie wires to the fence on both sides of the posts so there are 2 loops behind the post and 1 loop in front, or wrap the fence wires around the post and tie off. Locate the concrete blocks for the angle braces so at least 6 inches of the angle brace are embedded in the concrete. for Highway Construction Page 490 of 71 5 Temporary Construction Fence. Space temporary construction fence posts at 8 feet. Maintain the temporary construction fence when it is damaged, has fallen off its supports, has faded, or is otherwise deficient as determined by the Engineer. Repair or replace materials as necessary at no additional cost to the Department.
610.04 Method of Measurement.
The Engineer will measure acceptably completed work as follows:
1.Fence will be along the slope of the bottom wire by the foot, excluding the length between gateposts except for Type 1 Gates.
2.Gates will be by the each for the size and type specified except for Type 1 Gates.
3.Type 1 Gates will be per each, including the braces and fasteners. The Engineer will include the length of Type 1 Gates in the measurement for wire fence .
4.Two (2) Type 2 Gates installed in a single opening will be measured as 2 gates.
5.Braces will be per each and include line, corner, and terminal braces constructed of metal or wood. Gate braces are included in the gate item cost. Sag braces are included in the fence item. Braces for chain- link fence will not be measured separately and are included in the fence unit price.
610.05 Basis of Payment .
The Department will pay for accepted quantities at the contract unit prices as follows: Pay Item Pay Unit Fence, Type ___ ..................................................................................... FT Gates, Type 1 ......................................................................................... Each Gates, Type ___ ..................................................................................... Each Braces .................................................................................................... Each Temporary Construction Fence .............................................................. FT Temporary Fence, Type _____ .............................................................. FT Temporary Gate, Type ______ ............................................................... Each Temporary Brace .................................................................................... Each Clearing for the fence is incidental and the cost included in the fence contract unit prices. When barb arm/security attachment for Type 4 fence is specified, the work is incidental and included in the fence contract unit price. Removal of temporary materials is incidental . for Highway Construction Page 491 of 715 SECTION 611 – CATTLE GUARDS
611.01 Description.
Construct cattle guards.
611.02 Materials.
Use Class 30 concrete . Provide material as specified in: Metal Reinforcement .................................................................................................................... 503 Structural Metal s ........................................................................................................................... 504 Nonstructural Concrete ................................................................................................................. 509 Culverts ........................................................................................................................................ 602 Fences ......................................................................................................................................... 610
611.03 Construction Requirements.
Complete roadway grading at the location of the cattle guard before excavating for the cattle guard. Backfill the structure with granular material as specified in 210.
611.04 Method of Measurement.
The Engineer will measure acceptably completed work by the each, including the wing braces and posts. The distance between the posts will be excluded from measurement for fence.
611.05 Basis of Payment .
The Department will pay for acceptable quantities at the contract unit prices as follows: Pay Item Pay Unit Cattle Guard, Type ___ .......................................................................... Each Structural excavation and compacting backfill are incidental and the cost included in the cattle guard contract unit price. The Departme nt will pay for culverts as specified in 602.
Source: Idaho Standard Specifications for Highway Construction, 2023 Edition. Pages 525–526 of 768.