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SITE CONCRETE Section 03000 15-1207 2. Clear distance between parallel bars in a layer shall be no less than 1 ", the maximum bar diameter not 1 '/2 times the maximum size of coarse aggregate. C. Splices: 1. General: Unless otherwise shown on drawings, splice top reinforcing at midspan between supports, splice bottom reinforcing at supports and stagger splices at adjacent splices 5 foot minimum. Bar laps shall be wired together. Reinforcing steel laps shall be as follows: a. Lap splices in concrete: Lap splice lengths shall not be less than 62 bar diameter for No. 5 bar, 56" minimum for No. 6 bars. No. 4 bar shall have a minimum of 24" splice. 93 bar diameters for No. 7 bars and larger. b. Lap splices in CMU: Lap splice lengths not less than 75 bardiameters; 40" minimum, unless otherwise shown. Bars of size #8 and larger shall be spliced by welding or by approved mechanical connectors. Mechanical connectors shall develop 125% of the specific yield strength of the bar in tension. See Article 3.02D. 1.c for welded splice requirements. C. All splices shall be staggered at 5 feet minimum. 3.07 INSPECTION A. Approval of reinforcing steel, after installation, must be received from Inspector. Architect, Structural Engineer and DSA must be notified 48 hrs. in advance of beginning of concrete placement operations. 3.08 PLACING OF CONCRETE A. Adjacent finish surfaces shall be protected at all times during the concrete pour and finishing. Verify that all formwork is tight and leak -proof before concrete is poured. Finish work defaced during the concrete pour and finishing shall be replaced at no extra cost to the owner. B. Transport concrete from mixer to place of final deposit as rapidly as practicable by methods which will prevent separation or loss of ingredients. Deposit as close as practicable in final position to avoid re -handling or flowing. Partially hardened concrete must not be deposited in work. Concrete shall not be wheeled directly on top of reinforcing steel. C. Placing: Once started, continue concrete pour continuously until section is complete betmen predetermined constriction joints. Prevent splashing of concrete onto adjacent forms or reinforcement and remove such accumulation of hardened or partially hardened concrete from forms or reinforcement before work proceeds in that area. Free fall of concrete shall not to exceed 4'-0" in height. If necessary, provide lower openings in forms to inject concrete and to reduce fall height. D. Remove form spreaders as placing of concrete progresses. E. Place footings as monolithic and in one continuous pour. F. Keep excavations free of standing water, but moisture condition sub -grade before concrete placement. G. Compacting: All concrete shall be compacted by mechanical vibrators. Concrete shall be 4