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E. Bond non-bearing walls,partitions of more than one wythe with wire ties;use at least one tie for each 3%z sq. ft.of <br /> wall surface;spaced maximum of 16 inches vertically,36 inches horizontally,stagger alternate rows. Embed ties in <br /> horizontal joints. <br /> F. Anchor veneer to backup with ties spaced 16"horizontally and vertically. , <br /> G. Bond bearing walls of more than one wythe as required for non-bearing walls. Fill all collar joints between all <br /> wythes with mortar. ' <br /> 3.06 BUILT-IN WORK <br /> A. Consult other trades in advance, make provision for installation of their work in order to avoid cutting, patching. <br /> Build-in work specified under other sections as work progresses. <br /> B. Set steel lintels in beds of mortar. Fill door and borrowed light frames solid with grout around jambs, heads of , <br /> bucks,frames. <br /> C. Flexible Flashing: <br /> 1. Apply where concealed wall flashing is indicated;at heads;sills of exterior masonry openings;at exterior wall <br /> damp courses under all precast concrete copings;as otherwise indicated. <br /> 2. Flashing Installation: Properly clean and dry backup prior to applying primer as recommended by flashing <br /> manufacturer. Lay one layer of flexible flashing on bed joint of brick. Install continuous metal flashing and <br /> adhere another layer of flexible flashing over metal and continue up vertical back-up material a minimum of 8 , <br /> inches. Lap all flashing joints a minimum of 8 inches. <br /> 3. At heads, sills of masonry openings;carry head flashing 6"beyond ends of steel lintels; at heads,sills turn up <br /> ends to form pans,with corners folded,not cut. <br /> 4. Fully adhere flexible flashing to steel lintels. <br /> D. Where masonry is built around steel columns, wrap columns with 1%2' thick batt insulation and remove mortar , <br /> - droppings from around columns. <br /> 3.07 CONCRETE MASONRY UNITS , <br /> A. Concrete masonry erection, workmanship: Conform to latest standard specifications for concrete masonry as <br /> published by the National Concrete Masonry Association(NCMA). ' <br /> B. Do not wet concrete masonry units. <br /> C. Make necessary cuts of concrete masonry with motor driven masonry saw. <br /> D. Units with open cells exposed in wall will not be permitted. ' <br /> E. Provide reinforced cast-in-place lintels over square head openings where indicated; formed in place with special <br /> shaped load bearing bond beam or lintel units;jointing,texture to match adjacent wall units. Fill lintels solid with <br /> grout; reinforce as indicated. Provide minimum of 8 inches bearing at ends. Provide temporary support under , <br /> lintels as necessary. <br /> F. Provide continuous vertical control joints in concrete masonry walls where indicated;where joints are not indicated, ' <br /> locate maximum of 20 feet on center. Locate joints a minimum of 4'-0" beyond lintel bearing. Form joints as <br /> indicated. Bond beam reinforcing shall be continuous through control joints. <br /> 04200-6 No.99132-CP2 ' <br />