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<br /> <br />THE CITY OF SUNNY ISLES BEACH <br />PROJECT NO. 21-1011 <br />BUILDING DEPARTMENT RELOCATION TO ANNEX <br /> <br />Project No. 21-1011 November 2024 078400-9 <br /> <br />1. Remove all foreign materials from surfaces of opening and joint substrates and from <br />penetrating items that could interfere with adhesion of firestopping. <br /> <br />2. Clean opening and joint substrates and penetrating items to produce clean, sound <br />surfaces capable of developing optimum bond with firestopping. Remove loose <br />particles remaining from cleaning operation. <br /> <br />3. Remove laitance and form release agents from concrete. <br /> <br />4. Masonry, concrete, and gypsum board surfaces shall be smooth, clean, and free of <br />loose debris, holes, and projections. <br /> <br />3.3 APPLICATION <br /> <br />A. Through-Penetration Firestops: <br /> <br />1. General: Comply with this Section and firestop manufacturer's installation <br />instructions and drawings pertaining to products and applications indicated. <br /> <br />2. Install forming/damming materials and other accessories of types required to <br />support fill materials during their application and in the position needed to <br />produce the cross-sectional shapes and depths required to achieve fire ratings of <br />designated through-penetration firestop systems. After installing fill materials, <br />remove combustible forming materials and other accessories not indicated as <br />permanent components of firestop systems. <br /> <br />3. Install fill materials for through-penetration firestop systems by proven techniques <br />to produce the following results: <br /> <br />a. Completely fill voids and cavities formed by openings, forming materials, <br />accessories, and penetrating items. <br />b. Apply materials so they contact and adhere to substrates formed <br />by openings and penetrating items. <br />c. For fill materials that will remain exposed after completing Work, finish <br />to produce smooth, uniform surfaces that are flush with adjoining <br />finishes. <br /> <br />B. Fire-Resistive Joint Sealants: <br /> <br />1. General: Comply with this Section, with ASTM C 1193, and with the sealant <br />manufacturer's installation instructions and drawings pertaining to products and <br />applications indicated. <br /> <br />2. Install joint fillers to provide support of sealants during application and at position <br />required to produce the cross-sectional shapes and depths of installed sealants <br />relative to joint widths that allow optimum sealant movement capability and develop <br />fire-resistance rating required. <br /> <br />3. Install sealants by proven techniques that result in sealants directly contacting and <br />fully wetting joint substrates, completely filling recesses provided for each joint <br />configuration, and providing uniform, cross-sectional shapes and depths relative to <br />joint width that optimum sealant movement capability. Install sealants at the same <br />time joint fillers are installed. <br />