- 741 - SECTION 910 -- RIGHT-OF-WAY AND BARBED WIRE FENCE
910.01 Description
1.The Contractor shall furnish ma terials and build the right-of-way fence or barbed wire fence, including gates, channel crossings, floodgates, private fence terminal installations, drai nage structure terminal installations, concrete foundations, and other appurtenances as described in the contract.
910.02 Material Requirements
1.All materials shall conform to the requirements in Table 910.01. Table 910.01 Material Requirements Applicable Materials Section Fence ................................................................ 1064 Structural Time r and Lumber ............................ 1075
2.a. The concrete for use in fence post anchors and footings shall be a concrete mixture capable of achieving a minimum unit compressive strength of 1500 psi (10 MPa) at 28 days.
b.The aggregate shall be fr om acceptable sources.
c.The equipment used to mix, place, and finish concrete foundations for fences need not be calibrated.
910.03 Construction Methods
1.General.
a.The Engineer may designate ce rtain portions or lengths of the right-of-way fence and barbed wire fence as essential to the beginning or continuation of other operat ions on the project. The Contractor shall conduct all operations so as to give priority to the erection of those portions or lengths of fence that are designated most essential by the Engineer.
b.(1) Where a fence is to be c onstructed parallel to the right-of- way lines, it shall be erected on the pub lic right-of-way with the center of the posts 1 foot (300 mm) from the right-of-way line.
2.Fencing materials shall be attached on the field side (private side) of the posts, except that on curves, the fencing materials shall be attached on the outside of the curves.
3.The location of the fence shall be graded so that the fence will conform to the general contour of the ground.
2.a. Excavations shall be free of standing water or deleterious material before concrete is placed.
b.Where the concrete can be placed in dry excavation without the use of cribs or cofferdams and the nature of the soil is such that it will not slough or cave in, forms may be omitt ed at the discretion of the Engineer.
c.Care shall be exercised to prevent dirt, mud, or foreign material from becoming mixed with the concrete which is being placed.
d.Any excavation and backfilling work necessary in connection with the concrete footings shall be cons idered subsidiary to the posts, fence, or floodgates, as applicable.
910.03 Right-of-Way and Barbed Wire Fence
- 742 - 3. a. All posts shall be set plumb.
b.Concrete shall be allowed to cure for at least 24 hours before wire or fabric is placed.
c.(1) Wood line posts may be driven or set in prebored holes and backfilled in layers not to exceed 6 inches (150 mm) and compacted with approved hand or mechanical tampers.
2.Should the Contractor el ect to drive posts, rather than set them in prebored holes, t hen all responsibilities an d risks, including the posts splitting or breaking, are assumed by the Contractor.
3.Posts damaged by driving shall be rejected, removed, and replaced with acceptable materials.
d.Braces for wood posts shall be placed as indicated in the contract in 1 inch (25 mm) notches cu t into the posts and nailed securely with at least 2 galvanized 20d [0.2 inch x 4 inch (5 mm x 100 mm)] common steel nails in each end.
e.Cross ties shall be placed as indicated in the contract and shall consist of 4 strands of 0.146 inch (3 .7 mm) diameter galvanized wire tightly wrapped at least twice around each post and the tie tightened by twisting the strands.
f.The ties shall be fastened to the post with staples. g. Pull-posts shall be used at sh arp breaks in vertical grades and approximately every 330 feet (100 m) on straight runs or as directed by the Engineer.
h.Where the fence intersects or joins an existing fence, terminal installations shall be made in accordance with the details shown in the contract.
i.Fence at stream crossings or drainage ways shall be installed in accordance with the details shown in the contract.
j.(1) When indicated in the contract, terminal installations shall be made at drainage structures.
2.The terminal installations shall consist of furnishing and erecting the end posts, complete wi th diagonal braces, and placing the 3 single strands of barbed wire as described in the contract.
3.The eyebolts shall not be considered as a part of the drainage structure terminal installation.
4.Each strand of barbed wire shall be tightly wrapped at least twice around the post and threaded at least once through the eyebolt.
5.The loose ends, which shall be at least 4 inches (100 mm) in length, shall be tightly wrapped around the wire stretched between the eyebolt and the end post.
6.The barbed wire shall be fastened to wood posts with staples.
k.(1) The tension for stretc hing the fence material shall be applied by the use of mechanical fenc e stretchers designed for that purpose. Right-of-Way and Barbed Wire Fence 910.04 - 743 - (2) Splices in the fabric and barbed wire shall be securely made with metal sleeves that have been approved by the Engineer before their installation.
3.Fence fabric shall be fastened to all steel posts with wire ties at the top and bottom 2 wires and 3 other intermediate lateral wires, and to wood posts with staples on the same wires.
4.Barbed wire shall be fastened to wood posts with staples and to steel posts with wire ties.
l.(1) When a power line runs parallel to and above the fence, the fence shall be grounded at 2,000 f eet (610 m) intervals. When a power line crosses over the fenc e, the fence shall be groun ded at the point where the power line crosses it.
2.The ground shall include:
i.A hard drawn, high conductivity, electrolytic copper or copper covered steel ground rod at le ast 8 feet (2.4 m) in length and having a minimum diameter of 0.56 inch (14 mm), driven vertically until the top is approximately 6 inches (150 mm) bel ow the top of the ground. (ii) A solid copper conductor securely fastened to the rod and to the fence with approved clamps so each element of the fence is grounded in accordance with NEC requirements.
4.a. Gates shall be constructed as described in the contract. b. The wire fabric, barbed wi re, and arrangement of the fence material shall be the same as us ed in the remainder of the fence.
c.The pipe shall be of the size shown in the contract. d. The cinch fence stays shall be galvanized in accordance with Section 1063. The stays shall be twisted wire, 0.142 inch (3.6 mm) in diameter and 58 inches (1.5 m) in length.
e.The chains shall be galvanized common or proof coil chains with each link 1/4 inch (6 mm) in diameter and 12 links per foot (39 links per meter).
f.The top and bottom chains shall be furnished with a galvanized metal grab hook on one end.
g.Connections between the fabric and barbed wire and the posts and the installation of the cinch fence stays shall be securely made in accordance with the best industry practice and the fence manufacturer's recommendations.
5.The Contractor shall furnish padlocks as shown in the contract. They shall be 1 3/4 inch (44 mm) lamina ted type padlocks with one master key to open all padlocks. The Contractor shall deliver the keys and padlocks to the Engineer.
910.04 Method of Measurement
1.Private fence terminal inst allations, gates, floodgates, channel crossings, end posts, corner posts, pull posts, and drainage structure terminal installations will be measured by the each.
910.04 Right-of-Way and Barbed Wire Fence
- 744 - 2. The quantity of "Right-of-Way F ence" is measured at the bottom of the fence fabric from center to center of posts in linear feet (meters). The lengths occupied by gates will not be included.
3.The quantity of "Barbed Wire Fenc e" is measured from center to center of posts in linear feet (meters). The lengths occupied by gates will not be included.
910.05 Basis of Payment
1.P a y I t e m P a y U n i t Private Fence Terminals Each (ea) Floodgates, Type _____ Each (ea) Channel Crossings, Type _____ Each (ea) E n d P o s t s E a c h ( e a ) P u l l P o s t s E a c h ( e a ) C o r n e r P o s t s E a c h ( e a ) G a t e s E a c h ( e a ) Drainage Structure Terminals Each (ea) Right-of-Way Fence Linear Foot (LF) [Meter (m)] Barbed Wire Fence Linear Foot (LF) [Meter (m)]
2.Padlocks are subsidiary to the gate. 3. Direct payment will not be made for concrete footings, excavation, and backfill. These items shall be cons idered subsidiary to the associated fence pay item.
4.Direct payment will not be made for electrical grounds, but they shall be considered subsidiary to the fence pay item attached to the electrical ground.
5.Payment is full compensation for all work described in this Section. - 745 - SECTION 911 -- CHAIN-LINK FENCE
911.01 Description
1.The Contractor shall furnish materials and build chain-link fence and gates, including takedown panels, channel crossings, access gates, floodgates, drainage structure terminal in stallations, private fence terminals, concrete foundations, and other appurtenances as described in the contract.
2.a. The Contractor shall furn ish either zinc-coated steel fence fabric or aluminum-coa ted steel fence fabric.
b.All fence fabric furnished un der the contract shall be of the same type.
c.The Contractor shall use tie wires that are the same material and coating as the fence fabric.
911.02 Material Requirements
1.All materials shall conform to the requirements in Table 911.01. Table 911.01 Material Requirements Applicable Materials Section Structural Timber and Lumber .......................... 1075 Fence ................................................................ 1064
2.a. The concrete used in fence post anchors and footings shall be any concrete mixture capable of achieving a minimum unit compressive strength of 1500 psi (10 MPa) at 28 days.
b.The aggregate shall be from acceptable sources.
c.Equipment used to mix, plac e, and finish concrete does not have to be calibrated.
911.03 Construction Methods
1.a. The Engineer may designate certain portions or lengths of chain-link fence as essential to t he beginning or cont inuation of other operations on the project. The Contractor shall give priority to the erection of those portions or lengths of fence that are designated most essential by the Engineer.
b.(1) Where chain-link fence is to be constructed parallel to the right-of-way lines, it shall be erected on public right-of-way with the center of the posts 1 foot (300 mm) from the right-of-way line.
2.Fencing materials shall be attached on the roadway side of the posts, except the fencing materials shall be attached on the outside of the posts on curves.
3.The location of the fence shall be graded so that the fence will conform to the general contour of the ground.
2.The construction of concrete footings shall be performed in accordance with the requirements of Subsection 910.03, Paragraph 2.
3.a. (1) All posts shall be set in accordance with the requirements of Subsection 910.03.
2.All posts shall be of the sizes and types shown in the contract.
Source: Nebraska Standard Specifications for Highway Construction, 2017 Edition. Pages 775–778 of 1,048.