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<br />Copyright 2005 AIA <br /> <br />MASTERSPEC Short Form <br /> <br />08/05 <br /> <br />B. Comply with chemical-cleaner manufacturer's written instructions for protecting building and <br />other surfaces against damage from exposure to its products. Prevent chemical cleaning <br />solutions from coming into contact with people, motor vehicles, landscaping, buildings, and <br />other surfaces that could be harmed by such contact. <br /> <br />1. Cover adjacent surfaces with materials that are proven to resist chemical cleaners used <br />unless chemical cleaners being used will not damage adjacent surfaces. Use materials <br />that contain only waterproof, UV -resistant adhesives. Apply masking agents to comply <br />with manufacturer's written instructions. When no longer needed, promptly remove <br />masking to prevent adhesive staining. <br />2. Keep wall wet below area being cleaned to prevent streaking from runoff. <br /> <br />3.2 <br /> <br />STONE REMOVAL AND REPLACEMENT <br /> <br />A. <br /> <br />At locations indicated, remove stone that has deteriorated or is damaged beyond repair[ or is to <br />he reused]. Carefully demolish or remove entire units from joint to joint, without damaging <br />surrounding stone, in a manner that permits replacement with full-size units. <br /> <br />B. <br /> <br />Support and protect remaining stonework that surrounds removal area. Maintain flashing, <br />reinforcement, lintels, and adjoining construction in an undamaged condition. <br /> <br />C. <br /> <br />Notify Architect of unforeseen detrimental conditions including voids, cracks, bulges, and loose <br />units in existing stone or unit masonry backup, rotted wood, rusted metal, and other deteriorated <br />items. <br /> <br />D. <br /> <br />Remove in an undamaged condition as many whole stone units as possible. <br /> <br />1. Remove mortar, loose particles, and soil from stone by cleaning with hand chisels, <br />brushes, and water. <br />2. Remove sealants by cutting close to stone with utility knife and cleaning with solvents. <br /> <br />E. Clean stone surrounding removal areas by removing mortar, dust, and loose particles in <br />preparation for replacement. <br /> <br />F. Replace removed damaged stone with other removed stone in good quality, where possible, or <br />with new stone matching existing stone, including size. Do not use broken units unless they can <br />be cut to usable size. <br /> <br />G. Do not allow face bedding of stone. Before setting, inspect to verify that each stone has been <br />cut so that, when it is set in final position, natural bedding planes are essentially <br />horizontal[ except for arches, where hedding planes are essentially radial or verticat, hut <br />perpendicular to the wall]. Reject and replace stones with vertical bedding planes except as <br />required for arches, lintels, and copings. <br /> <br />H. Install replacement stone into bonding and coursing pattern of existing stone. If cutting is <br />required, use a motor-driven saw designed to cut stone with clean, sharp, unchipped edges. <br />Finish edges to blend with appearance of edges of existing stone. <br /> <br />1. Maintain joint width for replacement stone to match existing joints. <br />2. Use setting buttons or shims to set stone accurately spaced with uniform joints. <br /> <br />STONE RESTORATION AND CLEANING <br /> <br />04902 - 9 <br />