607FENCES

607-1.01 DESCRIPTION . Construct fence and gates. Reconstruct fences previous ly removed.

Include barbed wire, where shown on the Plans. Woven wire fence consists of galvanized woven wire fence fabric, metal posts, and all fittings and hardware. Chain link fence consists of chain link fence fabric, metal posts, and all fittings and hardware. The height of chain link fences must conform to the Plans or as designated in the bid schedule. Barbed wire consists of galvanized barbed wire and all fittings and hardware required for fastening to either a woven wire fence or a chain link fenc e, as shown on the Plans.

607-2.01 MATERIALS. Use materials that conform to the following:

Concrete Section 550, Class W Barbed Wire Subsection 710- 2.01 Woven Wire Subsection 710- 2.02 Chain link Fabric Subsection 710- 2.03 Fence Posts Subsection 710- 2.05 Any one of the types of chain link fabric specified in Section 710 may be furnished under Item 607.0003.____, Chain link Fence. Intermixing fabric types is not allowed.

607-3.01 CONSTRUCTIO N REQUIREMENTS. Clear and grub as necessary to construct the

fence to the required grade and alignment. Before installing fence, grade the existing ground along the fence line to a smooth, uniform surface so there are no abrupt grade changes between adjacent fence posts. At locations where breaks in a run of fencing are required, or at intersections with existing fences, adjust post spacing to conform to the requirements for the type of closure indicated. When the Plans require that posts, braces, or anchors be imbedded in concrete, install temporary guys or braces as requir ed to hold the posts in proper position until the concrete has set sufficiently to hold the posts. Do not install any materials on posts or place strain on guys and bracing set in concrete until 7 days after placing the concrete. Set the tops of all posts to the required grade and alignment. Do not cut the tops of the posts. In areas where muck excavation is designated on the Plans or in unstable areas as determined by the Engineer, drive fence posts as shown on the Plans or as directed. Attach the required size and type of wire or fencing firmly to the posts and braces in the manner indicated. Stretch all wire taut and install it to the required elevations. At each location where an electric transmission, distribution, or secondary line crosses any of the types of fences covered by these Specifications, furnish and install a ground rod and connection to the fence meeting the requirements of Section 9 of the NESC. Place ground rods and connectors at maximum intervals of 400 feet along the fence. When fence runs are less than 400 feet long, place one ground rod with connection to the fence. Coordinate fence construction operations so that livestock do not escape. Connect existing cross fences to the new posts. Place braces for every direction of strain at the j unction with existing fences. Fasten the wire in both fences properly to the posts. At bridges, cattle passes, and at 300 ALASKA 2020 culverts if shown on the Plans, connect the new fence to the structure so that livestock can pass freely through or under the structure. Fasten fence fabric and wire to the highway side of the posts. Treat changes in line where the angle of deflection is 30 degrees or more as a corner. Install corner posts. Treat changes in line where the angle deflection is between 15 and 30 degrees as alignment angles. Fasten adjacent posts to the angle posts using wire. If using wire is impracticable, brace the posts as detailed on the Plans for gate, end, and center posts. At all grade deflections and alignment angles where stresses tend to pull the posts from the ground, snub or guy the fencing at the critical point using a double strand of 9 gage galvanized wire. Connect the wire to each horizontal line of barbed wire, or to the top and bottom of wire mesh fabric, and to a deadman weighing approximately 100 pounds, buried in the ground not less than 2 feet. Pull the fencing snug to the ground before snubbing or guying. Erect reconstructed fences carefully using approved salvaged materials. Match any new materials required for reconstructed fence with the existing materials as closely as possible.

607-4.01 METHOD OF M EASUREMENT. See Section 109 and as follows:

Fence. Measured at the base of the fence parallel to the ground, not including gates. Barbed Wire. Measured at the base of the fence parallel to the ground, not including gates, for each strand. Gate. Each complete unit of the size and type specified.

607-5.01 BASIS OF PA YMENT. Concrete post foundations, fence posts, ground rods, and

connections are subsidiary. Clearing, grubbing, and grading are subs idiary. New materials necessary for reconstructed fence are subsidiary. Payment will be made under: PAY ITEM Item Number Item Description Unit 607.0001.____ Barbed Wire LF 607.0002.____ Woven Wire Fence LF 607.0003.____ Chain Link Fence LF 607.0004 .____ Reconstructed Fence LF 607.0005.____ Drive Gate EACH 607.0006.____ Walk Gate EACH 607.0007.____ Chain Link Fence LS 301 ALASKA 2020 SECTION 608 SIDEWALKS

608-1.01 DESCRIPTION . Construct, or retrofit asphalt or concrete sidewalks and curb ramps.

608-2.01 MATERI ALS. Use materials that conform to the following:

608-3.01 CONCRETE SI DEWALKS. Excavate to the required depth and to a width necessary to

install and brace the forms. Shape and compact the foundation to a firm, even surface conforming to the section shown on the Plans. Replace soft and yielding material with approved material. Compact bed course material according to Subsection 203- 3.04. Use full depth forms made of wood or m etal. Use forms that are straight, free from warp, and strong enough to resist the pressure of the concrete without springing. Coat forms with an approved form -release agent. Brace and stake the forms so that they maintain their position until their remova l. Thoroughly moisten the foundation immediately before placing the concrete. Finish the surface according to Section 550- 3.05. Do not plaster the surface. Edge all outside slab edges and all joints to a 1/4 inch radius. Make expansion joints to the dimensions and spacing shown on the Plans and fill with the type of preformed expansion joint filler specified. Divide the sidewalk into specified sections using dummy joints formed by a jointing tool or other acceptable means. Make dummy joints 1/3 the depth of the concrete and approximately 1/8 inch wide.