- 740 - SECTION 909 -- INSTALLING TIE BARS
909.01 Description
1.The Contractor shall furnish and install transverse deformed steel tie bars in existing concrete slabs adjacent to new concrete pavement as described in the contract.
909.02 Material Requirements
1.Steel bars used shall be of the size and length specified in the contract and in conformance with Section 1020.
2.Grout shall be listed on the Department’s Approved Products List.
909.03 Construction Methods
1.a. The Contractor shall drill ti e bar holes to the depth shown in the contract. The diameter of the hole shall be at least 1/8-inch (3-mm) but not more than 3/8-inch (9-mm) larger than the bar diameter.
b.Wet or dry drilling operations may be employed.
c.Drilled holes shall be normal to the edge of the slab and level.
d.Dry-drilled holes shall be brushed with a stiff bristle brush and blown clean with oil-free, compressed air.
e.Wet-drilled holes shall be thoroughly washed after drilling to remove any residue.
2.Grout shall be placed in the holes so all of the embedded portion of the bar is bonded.
909.04 Method of Measurement
1.Tie bars are measured by the each.
909.05 Basis of Payment
1.P a y I t e m P a y U n i t T i e B a r s E a c h ( e a ) 2. Payment is full compensation for all work described in this Section. - 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.
Source: Nebraska Standard Specifications for Highway Construction, 2017 Edition. Pages 774–774 of 1,048.