354 SECTION 752
752.01 Description
This work consists of constructing fences, removal of fences, and resetting fences.
752.02 Equipment
Reserved.
752.03 Materials
Item Section Concrete Class AE 802 Grouts and Epoxy 806 Fence 860 Chain Link Fence 860.01 Barbed Wire Fence 860.02 A Woven Wire Fence 860.02 B
752.04 Construction Requirements
A.Installing Line Posts.
1.General. Place all posts as close to the plan specified intervals as conditions allow. At sharp changes in grade, install extra posts to maintain the wire or chain link the proper distance from the ground. Align and plumb all posts. Where the slope of the terrain makes it impractical to set the posts plumb, set the posts as directed by the Engineer. Drive posts for barbed wire fence and woven wire fence, or set the posts in holes. If rock is encountered and the Engineer determines the post cannot be relocated, dr ill holes a minimum depth of 12 inches into the rock or to the required embedment depth of the post, whichever is less. Cut the post to provide the required height above the ground. Grout the post into the rock.
2.Driven posts. If soil conditions prevent proper driving of posts, drill a pilot hole no larger than the diameter of the post minus one inch.
3.Set posts. When posts are set in holes, drill the holes large enough to allow proper tamping. Set wood posts with the large end down. Place and compact the backfill in lifts not exceeding 6 inches of compacted material. Use all the excavated earth and slightly crown the backfill. 355 For wood posts, provide a ground at every tenth post using a nine-gauge wire the full length of the post. Staple the wire to the post before driving and staple each line wire to make contact with the ground.
B.Corner and Brace Assemblies. Install corner assemblies at all horizontal angles greater than 15 degrees. Install wood corner and brace posts in the same manner as wood line posts.
C.Installing Fence Wire.
1.General. Use double block or lever type hand stretchers to pull tight all fence wire.
2.Barbed Wire and Woven Wire. Cut the wire and tie it securely to each corner or brace post. During installation, install no more than 3 splices, factory and field combined, in a single spool of wire. If a wire breaks after installation, do not splice more than two times per strand between brace assemblies. Place wires on the side of the post away from the highway, except on the inside of curves. Drive staples diagonally to the grain of the wood and to 3/4 of their length into the wood leaving room for the wire to move.
3.Chain Link Fence. Place fabric on one side of the posts for a continu ous run of fence. Attach fence fabric to each brace, gate, and corner post using stretcher bars threaded through the loops of the fabric and fastened to the posts with bands. Splice the fabric by weaving in a pre- bent wire of the same kind as that in the fabric.
D.Resetting Fences. Replace materials damaged by negligence or lost from storage. Stockpile excess fence material at designated locations within the project limits. Use new staples or other fasteners for resetting the fence. The Engineer will determine if any new posts, braces, or wire are required.
E.Temporary Safety Fence. Install a temporary safety fence four feet high and colored bright orange. Use a UV treated polyethylene web. Support the fence, at minimum, with 7-foot, 1.2 pound/foot channel steel posts spaced at 6 feet. Support fencing placed across asphalt or concrete using barricades, delineator drums, or other means approved by the Engineer. Securely attach the fence to the supports. 356 Maintain the temporary safety fence for the duration of the project. Remove the temporary safety fence when it is no longer needed.
752.05 Method of Measurement
The Engineer will measure as specified in Section 109.01, “Measurement of Quantities” and as follows: The Engineer will measure new fence, reset fence, and temporary safety fence along the top of the fence from outside to outside of end posts. The Engineer will measure additional wire or fabric at depressions and add it to the quantity.
752.06 Basis of Payment
If resetting fence and the Engineer determines the existing posts, braces, or wire are inadequate, the Department will pay invoice cost of the new material, plus tax, plus the transportation charges and add 25 percent to cover all other costs. The Department will make this payment in addition to the price bid for “Fence Remove & Reset.” Pay Item Pay Unit Fence Barbed Wire ___Strand __________ Linear Foot Fence Chain Link Linear Foot Fence Woven Wire Linear Foot Fence Chain Link Remove & Reset Linear Foot Temporary Safety Fence Linear Foot Fence Remove & Reset Linear Foot Fence Terminal Each Gate – Vehicle Each Corner Assembly _________ Each Double Brace Assembly ____________ Each Such payment is full compensation for furnishing all materials, equipment, labor, and incidentals to complete the work as specified. Section 754 357 SECTION 754 HIGHWAY SIGNS
754.01 Description
This work item consists of furnishing, fabricating, and installing highway signs, delineators, and supporting structures.
754.02 Equipment
Reserved.
754.03 Materials
Item Section Concrete, Class AE 802 Reinforcing Steel 836 Highway Signs and Posts 894 Fabricate sign faces according to the detail drawings and the alphabets shown in the plans, MUTCD, the Standard Highway Signs published by FHWA, and the Standard Highway Signs Supplemental Manual published by the NDDOT. The last number shown as part of the sign number in the plans indicates the required width of the sign. Use screening inks that are compatible with the sheeting backgrounds.
754.04 Construction Requirements
A.Locating and Positioning Signs and Sign Structures. Erect signs and delineators located less than 30 feet from the pavement edge with the sign face truly vertical and turned 93 degrees away from the center and direction of travel of the lane which the facility serves. Erect signs located 30 feet or more from the edge of the pavement edge with the sign fa ce truly vertical and aligned 90 degrees from the center and direction of travel of the lane which the offset sign serves. Position signs and delineators located at the point where lanes divide or on curves to minimize specular reflection directed toward traffic.
B.Sign Fabrication.
1.General. Use directly applied sheeting, cut to the specified shapes for the messages, symbols, and borders on variable message signs. Apply the message, symbols and border as specified by the sheeting manufacturer.
2.Fabrication of Sign Backing. Cut sign backing to size and shape and fabricate to be free of defects. Fabricate sign backings that are larger than manufacturer’s material in sections with vertical butt joints. Use a minimum of 24 inch wide sections. If more than two sections of backing are required, place the wide sections on the outside positions and the narrower one between. Use the widest manufacturer’s sections of sheeting before narrower sections are used. The surface of all signs shall be plane surfaces.
Source: North Dakota Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 389–391 of 550.