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40-27 BUILDING <br />BRPH ARCHITECTS -ENGINEERS, INC. <br />CAST -IN -PLACE CONCRETE <br />1 1. Lap joints 6 inches and seal with manufacturer's recommended tape. <br />1 3.6 STEEL REINFORCEMENT INSTALLATION <br />A. General: Comply with CRSI's "Manual of Standard Practice" for fabricating, placing, <br />and supporting reinforcement. <br />1. Do not cut or puncture vapor retarder. Repair damage and reseal vapor retarder <br />before placing concrete. <br />B. Clean reinforcement of loose rust and mill scale, earth, ice, and other foreign materials <br />' <br />that reduce bond to concrete. <br />C. Accurately position, support, and secure reinforcement against displacement. Locate <br />and support reinforcement with bar supports to maintain minimum concrete cover. Do <br />not tack weld crossing reinforcing bars. <br />� <br />3, <br />D. Set wire ties with ends directed into concrete, not toward exposed concrete surfaces. <br />E. Install welded -wire reinforcement in longest practicable lengths on bar supports spaced <br />to minimize sagging. Lap edges and ends of adjoining sheets at least one mesh <br />spacing. Offset laps of adjoining sheet widths to prevent continuous laps in either <br />direction. Lace overlaps with wire. <br />a <br />JOINTS <br />General: Construct joints true to line with faces perpendicular to surface plane of <br />concrete. <br />Construction Joints: Install so strength and appearance of concrete are not impaired, at <br />locations indicated or as approved by Engineer. <br />1. Place joints perpendicular to main reinforcement. Continue reinforcement across <br />construction joints unless otherwise indicated. Do not continue reinforcement <br />through sides of strip placements of floors and slabs. <br />2. Form keyed joints as indicated. Embed keys at least 1-1/2 inches into concrete. <br />3. Locate joints for beams, slabs, joists, and girders in the middle third of spans. <br />Offset joints in girders a minimum distance of twice the beam width from a beam - <br />girder intersection. <br />4. Locate horizontal joints in walls and columns at underside of floors, slabs, <br />beams, and girders and at the top of footings or floor slabs. <br />5. Space vertical joints in walls 25 feet maximum on center. Locate joints beside <br />piers integral with walls, near corners, and in concealed locations where <br />possible. <br />6. Use a bonding agent at locations where fresh concrete is placed against <br />hardened or partially hardened concrete surfaces. <br />7. Use epoxy -bonding adhesive at locations where fresh concrete is placed against <br />hardened or partially hardened concrete surfaces. <br />C06922.001.00 03 30 00 - 11 <br />05-22-14 <br />