8-45 865-4 Measurement and Payment
Cable Guiderail will be measured and paid in linear feet of guiderail that has been satisfactorily completed and accepted exclusive of that length of guiderail that is within the pay limits of guiderail anchors. Mea surement will be made from center to center of the outermost post in the length of guiderail being measured. Such price will include , but is not limited to , furnishing and erecting posts, cable, miscellaneous hardware, concrete, delineators and all incidentals necessary to complete the work. Double Faced Cable Guiderail will be measured and paid in linear feet of guiderail that has been satisfactorily complet ed and accepted exclusive of that length of guiderail that is within the pay limits of guiderail anchors. Measurement will be made from center to center of the outermost post in the length of guiderail. Such price will include , but is not limited to , furnishing and erecting posts, cable, miscellaneous hardware, concrete, delineators and all incidentals necessary to complete the work. Cable Guiderail Anchor Unit s will be measured and paid in units of each completed and accepted. Additional Guiderail Posts will be measured and paid in units of each completed and accepted. No separate measurement will be made of any cable, posts, concrete, hardware or any other components of the completed anchor units that are within the pay limits shown in the plan s. Payment will be made under: Pay Item Pay Unit Cable Guiderail Linear Foot Double Faced Cable Guiderail Linear Foot Cable Guiderail Anchor Unit s Each Additional Guiderail Posts Each
866-1 Description
Furnish and erect woven wire, chain link and barbed wire fence with gates in conformity with the details shown in the plan s and at locations as shown in the plan s.
866-2 Materials
Refer to Division 10. Item Section Barbed Wire 1050 -4 Chain Link Fabric 1050 -6 Fence Materials 1050 -1 Fittings and Accessories 1050 -7 Metal Posts and Rails 1050 -3 Organic Zinc Repair Paint 1076-7 Timber Posts and Braces 1050 -2 Woven Wire 1050 -5 Use Class B concrete for anchors. Instead of Class B concrete, pre- mixed commercially bagged dry concrete mix may be used if the concrete meets the minimum strength requirements for Class B concrete when mixed with the quantity of water shown on the instructions printed on the bag.
8-46 866-3 Construction Methods
A.Clearing and Grubbing Only clear the ground that is necessary to erect a clear fence line. Clearing includes satisfactory removal and disposal of all trees, brush, stumps, existing fence or other objectionable material. Erect the fence to conform to the general contour of the ground. Place the bottom of the fabric or wire no more than 6 inches above the natural ground, except where the Engineer directs that ditches and depressions are to be spanned by using extra length posts in conjunction with additional barbed wire install ed between the bottom of the fence wire or fabric and the ground surface. Grade along the fence line to meet the above requirement such that no obstructions to proper drainage are created.
B.Setting Posts and Braces Set and maintain all posts in a vertical position. Line posts may be hand set or set with a post driver. Thoroughly tamp all backfilled material if hand set. If power driven, wood posts may be sharpened to a dull point. Remove and replace posts that are damaged by power driving. Set posts in concrete anchors to maintain the position and alignment of the post when required in the plan s or where dictated by soil conditions. Forms are not required for the concrete. Trowel the top of the concrete to a smooth finish and slope to drain away from the post. The concrete anchors require at least a 3 day curing period before any load is placed on the post. Instead of setting roll formed steel line posts in concrete, such posts may be driven provided they are not part of a line brace assembly. Drive t he posts at least 3 feet into the ground. Provide adequate protection to the post tops to prevent damage from the driving operations. Repair damage to the zinc coating in accordance with Article 10 76-7. Set posts in concrete anchors where soil conditions are such that the posts cannot be driven without deformation, or where soils are encountered that does not provide adequate in- ground stability. Where rock or concrete pavement or slabs are encountered within the required depth where fence posts are to b e erected, drill a hole in the rock or concrete of a diameter slightly larger than the largest dimension of the post in the rock or concrete and grout in the post. The depth of post embedment shown in the plan s will not be required and the post may be shortened as necessary, provided the post is embedded within the rock or concrete pavement or slab to a minimum depth of 12 inches . Do not fabricate extra length posts by welding short sections of posts together. Place line braces at the end of each roll or piece of woven wire. Do not use pieces of woven wire fabric less than 100 feet in length, unless otherwise directed by the Engineer . When the use of short pieces of woven wire is permitted, furnish and install the additional required brace posts and brace s. Approved splicing sleeves may be used instead of providing such brace posts and braces.
C.Installing Fabric and Wire
1.Chain Link Fence Attach chain link fabric to tubular end, gate, corner or brace posts with stretcher bars and stretcher bar bands as show n in the plan . Fasten the fabric to line posts and to top and brace rails with wire fasteners spaced and wound as shown in the plan s. Fasten the fabric to the tension wire by hog rings spaced at 24 inch intervals or weave the tension wire through the fabric. Make hog ring ties at fabric joints with the hog ring passing completely around the fabric joint.
8-47 Place chain link fabric by securing or fastening on end and applying sufficient tension
to remove al l slack before making permanent attachments elsewhere. Apply the tension for stretching by mechanical fence stretchers designed for this purpose. Connect rolls and pieces of chain link fabric to each other by field weaving provided that such weaving is identical in appearance and strength as the machine weaving done at the factory. Attach barbed wire used in conjunction with chain link fabric, to the post by eyebolt or by a tie wire passing through holes drilled in the metal post to prevent any vertical movement of the barbed wire. Wrap the ends and beginnings of strands around the post twice and securely fasten by winding the end around the wire near the post. Splice barbed wire only at posts. Install additional barbed wire when shown in the plans or whe re directed by the Engineer .
2.Woven Wire Fence Stretch woven wire fabric taut and securely attach to each post with one or more staple s in each line of wire. Use as many staples as required to firmly secure the wire at the location and elevation required by the plans. When woven wire is attached to metal posts, use at least five clips at each post to fasten the individual strands of wire to the post except where wrapping of the strand around the post is required. Stretch with an approved stretcher that wi ll produce equal tension in each line of wire. At each end or gate post, at the center post in each line brace and at corner posts except as otherwise shown in the plans, cut out all vertical strands of wire and wrap each horizontal strand of wire around t he post and securely fasten by winding the end around the strand of wire near the post. Do not splice fabric between the posts of a brace post assembly. Do not splice between other posts, unless the splicing sleeves are approved by the Engineer . Pull wove n wire taut and securely attach to each post by methods described for woven wire when used in conjunction with woven wire fabric. Do not splice woven wire between posts. Install additional woven wire as shown in the plan s or where directed by the Engineer .
3.Barbed Wire Fence Install barbed wire fence in accordance with the plans and as directed. Pull barbed wire taut and securely attach to each post by methods described for woven wire. Do not splice barbed wire between posts.
866-4 Measurement and Payment
Woven Wire Fence, __ " Fabric will be measured and paid in linear feet of fence, measured in place from center of each post or gate post to center of end post or gate post exclusive of gate sections, that has been completed and accepted. Chain Link Fence, __" Fabric will be measured and paid in linear feet, of fence measured in place from center of each post or gate post to center of end post or gate post exclusive of gate sectio ns, that has been completed and accepted. ____ Strand Barbed Wire Fence with Posts will be measured and paid in linear feet of fence measured in place from center of each post or gate post to center of end post or gate post exclusive of gate sections that has been completed and accepted. All posts used for the barbed wire fence are included in the price of the barbed wire fence and will not be paid separately.
8-48 __" Timber Fence Posts, ____ will be measured and paid in units of each for the several sizes
and kinds of posts installed on the project, including timber line posts, brace posts, gate posts and posts erected as barriers at driveways and entrances. The actual length of timber posts in linear feet of variabl e length and extra length posts shall be measured as placed and converted to an equivalent number of standard length posts of the same size for which a pay item has been established. In converting to equivalent numbers of standard length posts, any fracti onal portion of a post remaining from the division of a total number of linear feet by a standard post length shall be considered as equal to one post. Where the Contractor has elected to use pieces of woven wire shorter than 100 f eet in length, as permitted by Subarticle 866-3(B), on the condition that he furnish and install at no additional cost to the Department line braces at the ends of short pieces, timber fence posts shall include the number of line posts made unnecessary by such line braces but sha ll exclude the posts used in the line braces. Metal Line Posts for __" Chain Link Fence will be measured and paid in units of each for the several sizes and kinds of posts actually installed on the project. For extra length metal posts, the actual length of post in place in excess of the standard pay length for each post shall be measured in linear feet, and half of such length shall be converted to an equivalent number of standard length posts of the same size for which a pay item has been established. I n converting to equivalent numbers of standard length posts, any fractional portion of a post remaining from the division of a total number of linear feet by a standard post length shall be considered as equal to one post. Metal Terminal Posts for __ " Chai n Link Fence will be measured and paid in units of each for all end, corner and brace posts installed on the project. Metal Gate Posts for __ " Chain Link Fence, Double Gate will be measured and paid in units of each for gateposts installed on the project. Metal Gate Posts for __ " Chain Link Fence, Single Gate will be measured and paid in units of each for gate posts installed o n the project. Double Gates, __High, __Wide, __ Opening will be measured and paid in units of each for the number of gates actually erected on the project. Double gates will be measured as one gate. Single Gates, __ High, __Wide, __ Opening will be measured and paid in units of each for the number of gates actually erected on the project. Additional Barbed Wire will be measured and pa id in linear feet of wire installed in the work, complete and in place. Measurement of additional barbed wire will be made along each strand after the installation has been completed. No measurement will be made of any wraps, nor will measurement be made of the upper or lower continuous strand of barbed wire that is erected as part of woven wire fence. Setting sleeves in retaining wall will not be paid as such work is incidental to the other pay items in this specification. Work includes , but is not limited to , clearing and grading; and furnishing and installing fence fabric, barbed wire, staples, tie wires, stretcher bars, top rails, tension wire, posts and post braces, concrete, gates, fittings and any other materials, furnishing and installing sleeves i n retaining walls and filling sleeves upon setting posts. When the use of short pieces of woven wire is permitted, furnish and install the additional required brace posts and braces at no additional cost to the Department.
Source: North Carolina Standard Specifications for Roads and Structures, 2024 Edition. Pages 385–388 of 857.