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DocuSign Envelope ID: 313DA256 -1EDE- 4396- A716- 4C53B809027E <br />JERRY M. PASSMORE CENTER ADDITION AND RENOVATION <br />HILLSBOROUGH, NORTH CAROLINA <br />L. Retighten forms and bracing before placing concrete, as required, to prevent mortar leaks and <br />maintain proper alignment. <br />M. Coat contact surfaces of forms with form- release agent, according to manufacturer's written <br />instructions, before placing reinforcement. <br />3.2 EMBEDDED ITEMS <br />A. Place and secure anchorage devices and other embedded items required for adjoining work that is <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 />1. Install anchor bolts, accurately located, to elevations required. <br />3.3 REMOVING AND REUSING FORMS <br />A. General: Formwork, for sides of beams, walls, columns, and similar parts of the Work, that does not <br />support weight of concrete may be removed after cumulatively curing at not less than 50 deg F for <br />24 hours after placing concrete provided concrete is hard enough to not be damaged by form - <br />removal operations and provided curing and protection operations are maintained. <br />B. Leave formwork, for beam soffits, joists, slabs, and other structural elements, that supports weight <br />of concrete in place until concrete has achieved the following: <br />1. At least 70 percent of 28 -day design compressive strength. <br />2. Determine compressive strength of in -place concrete by testing representative field -cured test <br />specimens according to ACI 301. <br />3. Remove forms only if shores have been arranged to permit removal of forms without loosening <br />or disturbing shores. <br />C. Clean and repair surfaces of forms to be reused in the Work. Split, frayed, delaminated, or otherwise <br />damaged form- facing material will not be acceptable for exposed surfaces. Apply new form- release <br />agent. <br />D. When forms are reused, clean surfaces, remove fins and laitance, and tighten to close joints. Align <br />and secure joints to avoid offsets. Do not use patched forms for exposed concrete surfaces unless <br />approved by Architect. <br />3.4 VAPOR BARRIERS <br />A. Vapor Barriers: Place, protect, and repair vapor - barrier sheets according to ASTM E 1643 and <br />manufacturer's written instructions. Seal seams and tears with vapor barrier seam tape. Tape <br />perimeter of all vapor barrier penetrations. <br />3.5 STEEL REINFORCEMENT <br />A. General: Comply with CRS I's "Manual of Standard Practice" for placing reinforcement. <br />Do not cut or puncture vapor retarder. Repair damage and reseal vapor retarder before placing <br />concrete. <br />B. Clean reinforcement of loose rust and mill scale, earth, ice, and other foreign materials. <br />CAST -IN-PLACE CONCRETE 033000-9 <br />