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A. Verify reinforcement and other items to be cast into concrete are accurately placed, <br /> positioned securely, and will not cause hardship in placing concrete . <br /> 3 .02 PREPARATION <br /> A . Install vapor barrier under all slabs, footings, and other concrete exposed to earth. Lap <br /> joints a minimum of 6 inches . Do not disturb or damage vapor barrier while placing <br /> concrete . Repair damaged vapor barrier. <br /> 3 .03 PLACING CONCRETE <br /> A . Notify Engineer minimum 48 hours prior to commencement of concreting operations . <br /> B . Place concrete in accordance with ACI 301 . <br /> C . Hot Weather Placement ACI 301 . <br /> D . Cold Weather Placement ACI 301 . <br /> E . Ensure reinforcement, inserts. embedded parts, formed joints are not disturbed <br /> during concrete placement. <br /> F. Place concrete continuously between predetermined construction and control joints. Do <br /> not break or interrupt successive pours such that cold joints occur. <br /> G. Contractor shall be responsible for means and methods to ensure concrete is poured in a <br /> dry area. <br /> H. Contractor needs to use mechanical vibrating equipment for consolidating concrete and <br /> should have a minimum of (2) two operable vibrators on the job. <br /> 3 .04 FINISHING <br /> A. Finish outdoor slabs with light broom finish. <br /> Be Interior slabs shall be mechanical trowel finish. <br /> 3 .05 PATCHING <br /> A. Notify Engineer immediately upon removal of forms. No surfaces are to be patched or <br /> backfilled prior to being reviewed by the Engineer. <br /> Be Patch imperfections as requested by the Engineer or his field representative. <br /> 3 .06 DEFECTIVE CONCRETE <br /> A. Modify or replace concrete not conforming to required levels, lines, details, and � <br /> elevations . <br /> 044572017 <br /> 03300-4 i <br /> i <br /> c <br />