614.01Description
This work shall consist of the construction or reconstruction of PCC headers adjacent to railroad tracks, bridges, and similar locations in accordance with 105.03.
MATERIALS
614.02Materials
Materials shall be in acco rdance with the following: 10
Reinforcing Bars .......................................................... 910.01
If the header is adjacent to cement concre te base or pavement, the header concrete shall be the same composition as that of the base or pavement header constructed monolithic with the base or pavement. If the adjacent base or pavement is thickened, that portion forming the thickening shall be considered as part of the header.
If the header is adjacent to asphalt pavement, the concrete shall be class A in 20 accordance with 702 using class AP coarse aggregate.
CONSTRUCTION REQUIREMENTS
614.03PCC Header
Construction shall be in accordance with the applicable provisions of 702 and with these requirements.
Welding shall be in accordance with 711.32.
Headers at railroad crossings shall be as shown on the plans.
614.04Reconstructed Cement Concrete Header
This work shall be in accordance with the plans. Round plug welds or rectangular shaped plug welds may be used to weld th e steel angle to the existing steel edge protection. Round plug welds shall be a minimum of 1 in. diameter.
Welding shall be in accordance with 711.32.
614.05Method of Measurement 40
Cement concrete header and reconstructed cement concrete header will be measured by the linear foot.
614.06Basis of Payment
The accepted quantities of this work will be paid for at the contract unit price per linear foot for header, cement concrete, of the type specified, or header, cement concrete, reconstruct, complete in place. 614.06
Payment will be made under:
Pay Item Pay Unit Symbol
Header, Cement Concrete, _____ .............................................. LFT type Header, Cement Concrete, Reconstruct ..................................... LFT
The cost of edge protection, metal chai rs, excavation, and necessary incidentals shall be included in the cost of the pay items.
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