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CHAPEL HILL ORANGE COUNTY VISITORS BUREAU August 12, 2020 <br />308 WEST FRANKLIN, CHAPEL HILL, NC <br /> <br />MISCELLANEOUS CAST-IN-PLACE CONCRETE 033053 - 5 <br />3.2 EMBEDDED ITEMS <br />A. Place and secure anchorage devices and other embedded items required for adjoining work <br />attached to or supported by cast-in-place concrete. Use setting drawings, templates, diagrams, <br />instructions, and directions furnished with items to be embedded. <br />3.3 VAPOR RETARDERS <br />A. Install, protect, and repair vapor retarders according to ASTM E 1643; place sheets in position <br />with longest dimension parallel with direction of pour. <br />1. Lap joints 6 inches (150 mm) and seal with manufacturer's recommended adhesive or <br />joint tape. <br />3.4 STEEL REINFORCEMENT <br />A. Comply with CRSI's "Manual of Standard Practice" for fabricating, placing, and supporting <br />reinforcement. <br />1. Do not cut or puncture vapor retarder. Repair damage and reseal vapor retarder before <br />placing concrete. <br />3.5 JOINTS <br />A. General: Construct joints true to line with faces perpendicular to surface plane of concrete. <br />B. Construction Joints: Locate and install so strength and appearance of concrete are not impaired, <br />at locations indicated or as approved by Architect. <br />C. Contraction Joints in Slabs-on-Grade: Form weakened-plane contraction joints, sectioning <br />concrete into areas as indicated. Construct contraction joints for a depth equal to at least one- <br />fourth of concrete thickness, as follows: <br />1. Grooved Joints: Form contraction joints after initial floating by grooving and finishing <br />each edge of joint with groover tool to a radius of 1/8 inch (3.2 mm). Repeat grooving of <br />contraction joints after applying surface finishes. Eliminate groover marks on concrete <br />surfaces. <br />2. Sawed Joints: Form contraction joints with power saws equipped with shatterproof <br />abrasive or diamond-rimmed blades. Cut 1/8-inch- (3.2-mm-) wide joints into concrete <br />when cutting action will not tear, abrade, or otherwise damage surface and before <br />concrete develops random contraction cracks. <br />D. Isolation Joints: Install joint-filler strips at junctions with slabs-on-grade and vertical surfaces, <br />such as column pedestals, foundation walls, grade beams, and other locations, as indicated. <br />1. Extend joint fillers full width and depth of joint, terminating flush with finished concrete <br />surface, unless otherwise indicated. <br />DocuSign Envelope ID: 775B89AF-3514-4D9E-B148-2FDE4EFF16C2