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1. Revi e , <br /> s ACI 530.1/ASCE b to exclude Sections 1.4 and 1.7; Parts 2.1.2, 3.1.2, <br /> and 4.1.2; and Articles 1.5.1.2, 1.S.I.3, 2.1.1.1, 2.1.1.2, and 2.3.3.9 and to <br /> modi:fy Article 2.I.1.4 by deleting requirement for installing vent pipes and � <br /> conduits built into masonry. <br /> 2. Mortar camposition and properties will be evaluated per ASTM C 780. <br /> 3, Grout compressive strength wili be tested per ASTM C 1019. � <br /> 1.6 DELNERY, STORAGE,ANb HANDLING <br /> A. Deliver masonry materials to project in undamaged condition. � <br /> B. Store and handle masonry units off the ground, under cover, and in a dry location to <br /> prevent their deterioration or damage due to moisture, tempera.ture changes, � <br /> contaminants, cortosion,and other causes. If units become wet, do not place until ztnits <br /> are in an air-dried condition. <br /> C. Stora cementitious materials off the ground,under cover, and in dry Iocation. ' <br /> D, Store aggegates where grading and ather required characteristics can be maintained and <br /> contaminataon avoided. � � <br /> E. Store masonry accessocies including metal items to grevent corrosion and accumulation <br /> of dirt and oil. , <br /> 1.7 PROJECT CONDITIONS <br /> A. Protection of Masonry: During erection, cover tops of walls,projections, attd sills with ' <br /> waterproof sheeting at end of each day's work. Cover partially completed masonry when <br /> construction is not in progress. <br /> B. Do not apply uniform floor or roof loads for at least 12 hours and concentrated loads for � <br /> at least 3 days after building masonry walis or columtts. <br /> C. Stain Prevention: Prevent grout,mortar,and soil from staining the face of masonry to be ' <br /> left exposed or painted. Remove immediately any grout, mortar, and soil that come in <br /> contact with such masonry. <br /> l. Protect base of walls from rain-splashed mud and mortar spfatter by means of ' <br /> coverings spread on ground and over wall surface. <br /> D. Hot-Weather Construction: Comply wifti referenced unit tnasonry standard. ' <br /> PART1 -PRODUCTS <br /> 2.1 CONCRETE MASONRY LTN�fS � <br /> A. General: Coxnply with requirements indicated below applicable to each form of concrete <br /> masonry unit required. � <br /> i. Provide special shapes where indicated and as follows: <br /> a. For iintels,corners,jambs,sash,control joints,headers,bonding,and , <br /> other special conditions. <br /> b. Square�edged units for outside corners,except where indica#ed as <br /> bullnose. <br /> 2. Size: Provide concrete masonry units complying with requirements indicated � <br /> below for size tl�at are manufactured to specified face dimensions within <br /> tolerances specified in #he applicable referenced ASTM spec�cation for ' <br /> concrete masoz�ry units. <br /> UNIT MASONRY Page 2 of 6 <br /> , <br />