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PGSF WMVD Storm and Combined Sewer - Construction Package 2 Concrete Reinforcing <br />Project No. 180162 03 20 00 - 2 <br /> <br />6. Qualifications of welding operators, welding processes and procedures. <br />7. Reinforcing steel shop drawings showing reinforcing steel bar quantities, sizes, <br />spacing, dimensions, configurations, locations, mark numbers, lap splice lengths and <br />locations, concrete cover and reinforcing steel supports. Reinforcing steel shop <br />drawings shall be of sufficient detail to permit installation of reinforcing steel without <br />reference to the contract drawings. Shop drawings shall not be prepared by <br />reproducing the plans and details indicated on the contract drawings but shall <br />consist of completely redrawn plans and details as necessary to indicate complete <br />fabrication and installation of reinforcing steel, including large scale drawings at <br />joints detailing bar placement in congested areas. Placement drawings shall be in <br />accordance with ACI 315. Reinforcing details shall be in accordance with ACI SP-66. <br />1.04 DELIVERY, STORAGE AND HANDLING <br />A. Ship reinforcing steel to the jobsite with attached plastic or metal tags having permanent <br />mark numbers which match the shop drawing mark numbers. All reinforcing shall be <br />supported and stored above ground. <br />PART 2 PRODUCTS <br />2.01 BAR REINFORCEMENT <br />A. Reinforcing steel bars shall be deformed billet steel in conformance with ASTM A615, <br />Grade 60. Bars to be welded shall be deformed billet steel conforming to ASTM A706. <br />Where specified, reinforcing steel shall be epoxy-coated in conformance with ASTM <br />A775. <br />2.02 WIRE FABRIC <br />A. Wire fabric shall be welded steel mesh conforming to ASTM A1064. <br />2.03 WIRE AND PLAIN BARS <br />A. Wire used as reinforcement and bars used as spiral reinforcement in structures shall be <br />cold drawn steel conforming to ASTM A1064. <br />2.04 TIE WIRE <br />A. The wire shall be minimum 16 gage annealed steel conforming to FEDSPEC QQ-W-461H. <br />2.05 BAR SUPPORTS <br />A. Bar supports coming into contact with forms shall be CRSI Class 1 plastic protected or <br />Class 2 stainless steel protected and shall be located in accordance with CRSI-MSP and <br />placed in accordance with CRSI-PRB. Plastic coating on legs shall extend at least 0.5- <br />inch upward from form surface. <br />B. Provide precast concrete blocks, four inches square in plan, with embedded tie wires <br />(wire dobies) as specified by CRSI 1 MSP for footing and slabs on grade. Do not use <br />brick, broken concrete masonry units, spalls, rocks, construction debris, or similar <br />material for supporting reinforcing steel. Precast concrete blocks shall have same or <br />higher compressive strength as specified for concrete in which they are located.