- 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.
911.03 Chain-Link Fence
- 746 - (3) Tubular line posts shall have heavy malleable iron caps to hold the top rail and exclude moisture from inside the post.
4.H-Section steel line posts shall be constructed or equipped with a suitable device to hold the top rail.
5.All end, corner, and pull posts shall be furnished with braces, truss rods, turnbuckles, tension bands, and all fittings required to make a complete in stallation as shown in the contract.
b.Where the chain-link fence intersects or joins an existing fence, terminal installations shall be made in accordance with the details shown in the contract. Braces and cross ties shall be installed in accordance with the requirements of Subsection 910.03.
c.As indicated in the contract, variations in the requirements for fence construction will be required at stream crossings or drainage ways. The locations of these installations will be dictated by the topography and as directed by the Engineer.
d.When indicated in the cont ract, drainage structure terminal installations shall be made at structures. The terminal installation shall be made in accordance with the requirements of Subsection 910.03 except that chain-link fabric shall be used in place of barbed wire.
e.(1) The tension for stretc hing the fence material shall be applied by approved mechanical fence stretchers.
2.Splices in the fabric shall be made according to the fence manufacturer's recommendations.
3.The fabric shall be fastened to the top rail and posts with wire ties or clamps. Six fasteners, equally spaced, shall be used to fasten the fabric to each 10 feet (3 m) of ra il; and 1 fastener shall be used for each foot (300 mm) of post height.
f.Where a power line crosses over the fence or parallels the fence, the fence shall be grounded in accordance with the provisions of Subsection 910.03.
g.Takedown panels shall be constructed in accordance with the details shown in the contract. All material used for the takedown panels shall be the same as those used for the remainder of the chain-link fence, including the tension bars and bands for the end, corner, and pull posts.
911.04 Method of Measurement
1.Private fence terminal installa tions, takedown panels, floodgates, access gates, channel crossings, end posts, corner posts, pull posts, and drainage structure terminal installati ons will be measured by the each.
2.The quantity of chain-link fence is measured at the bottom of the fence fabric from center to center of posts in linear feet (meters). The lengths occupied by takedown panels and gates will not be included. Chain-Link Fence 911.05 - 747 - 911.05 -- Basis of Payment
1.P a y I t e m P a y U n i t Private Fence Terminal for _____ Foot Each (ea) Takedown Panel for ____ Foot Each (ea) Floodgate, Type ____ for ____ Foot Each (ea) Channel Crossing, Type ____ for ____ Foot Each (ea) End Post for _____ Foot Each (ea) Corner Post for _____ Foot Each (ea) Pull Post for _____ Foot Each (ea) Drainage Structure Terminal for Each (ea) ______ Foot Chain-Link Fence ______ Foot Chain-Link Fence Linear Foot (LF) [Meter (m)] _____ Gate _____ Foot Chain-Link Fence Each (ea) 2. Direct payment will not be made for concrete footings, but they shall be considered subsidiary to the associated fence pay item.
3.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.
4.Payment is full compensation for all work described in this Section. - 748 - SECTION 912 -- SPECIAL SURF ACE COURSE FOR MAILBOX TURNOUTS
912.01 Description
1.The Contractor shall furnish the materials, prepare the subgrade and/or shoulder, and construct a surface course for mailbox turnouts. This surface course shall be placed and compacted on the shoulder of the roadbed, adjacent to the surfacing, as described in the contract.
912.02 Material Requirements
1.The mailbox turnout surface course shall be constructed from asphaltic concrete material.
2.At the discretion of the Engineer, the following material may be used: a. Coarse aggregate that complies with the gradation requirements for Class "E" aggregate in Section 1033, Table 1033.03A.
b.Bituminous aggregate salvaged from an existing bituminous mat or asphalt millings.
c.Fresh bituminous aggregate. d. Any combination of the above approved in writing by the Engineer.
3.Salvaged material, at the time of placement, shall have been pulverized to comply with the following requirements: Min. Max. Total percent passing a 2 inch (50 mm) sieve 95 100 Total percent passing a 1 inch (25 mm) sieve 40 100
912.03 Construction Methods
1.The Contractor shall grade and shape the roadbed shoulder at the turnout location so the completed surface course will conform to the typical cross sections and dimensions shown in the contract.
2.a. The Contractor shall furnish and place any additional embankment necessary to complete the turnout to the typical cross section and dimensions shown in the contract.
b.Any additional embankment placed shall be compacted to conform to the requirements in Subsection 205.03, Paragraph 14.b.(2), Class "II" embankment.
3.This method of construction of the special surface course shall only apply to mailbox turnouts constructed with salvaged bituminous mat, asphalt millings, or coarse aggregate:
a.Aggregate, millings, and bituminous mat shall be placed in such quantities that the depth after com paction is equal to or greater than the minimum depth shown in the contract.
b.The materials shall be bladed to a uniform thickness over the described area.
Source: Nebraska Standard Specifications for Highway Construction, 2017 Edition. Pages 779–781 of 1,048.