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E. Su rt maso solidl with mortar unless otherwise indicated. ' <br /> PP� I►rY Y � <br /> 33 MORTA.R BEDDING AND JOINTING � <br /> A. Lay hollow concrete masonry units as follows: , <br /> 1. With full mortar coverage on horizontal and vertical face shells. <br /> 2. Bed webs in znortar in starting course on footings and in all courses of piers, <br /> columns, and pilasters, and where adjacent to cells or cavities to be filled with � <br /> grout. <br /> 3. For starting course on footings where celIs are not grouted, spread out fuil mortar <br /> bed including areas under cells. � <br /> 3.4 INSTALLATiON�F REINFORCED iTNIT MASONRY <br /> A. General: Install reinforced unit masonry to coinply with requirements of referenced unit ' <br /> masonry standard. <br /> B. Temporary Formwork: Construct formwork and shores to support reinforced masonry � <br /> elements daring construction. <br /> 1. Construct formwork to conform to shape, line, and dimensions shown. Make <br /> sufficiently tight to prevent ieakage of mortar and grout. Brace,tie, and support � <br /> forms to maintain position and shape during construction and curing of teinforced <br /> masonry. <br /> C. Do not place grout until entire height of masonry to be grouted has attained ' <br /> sufficient strength to resist grout pressure. <br /> D. Do not remove forms and shores until reinforced masonry members have hazdeneci � <br /> sufficiently to carry their own weight and other temporary loads that may be placed on <br /> them during construction. <br /> 3.5 REPAIRING,POIIVTING,AND CLEANING ' <br /> A. Remove and replace masonry units that are loose, chipped, broken, stained, ar otherwise � <br /> damaged or if units do not match adjoining units. Instail new units to rnatch adjoining <br /> units and in fresh mortar or grout,pointed to eliminate evidence of replacement. <br /> B. Pointing: During the tooling of joints,enlarge any voids or holes, except weep holes,and ' <br /> completely fiIl with znortar. Point-up all joints including corners, openings,and adjacent <br /> construction to provide a neat,uniform appearance,prepared for application of sealants. <br /> C. Final Cleaning: After mortar is thoroughly set and cured, clean exposed masonry as � <br /> follows: <br /> 1. Remove large mortar particles by hand with wooden paddles and nonmetallic � <br /> scrape hoes or chisels. <br /> 2. Protect adjacent stone and non-masonry surfaces from contact with cleaner by <br /> covering them with liquid strippable masking agent, polyethylene film, or ' <br /> waterproof masking tape. <br /> 3. Clean concrete masonry by means of cleaning method indicated in NCMA TEK <br /> 45 applicable to type of stain present on exposed surfaces. <br /> D. Protection: Provide final protection aud maintain conditions, in a manner acceptable to t <br /> Installer,that ensure unit masonry is withaut damage and deterioration at tune of <br /> Substantial Completion. � <br /> END OF SECTION 04200 <br /> U1�TIT MASONRY Page 6 of 6 , <br />