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KAISER PERMANENTE Site Prep #1 Electrical Service <br />ASC & Clinic (HUB) March 18, 2020 <br />Everett, WA Project No. 19.05002.00 <br />G. Mortars: Prepackaged dry mixes consisting of a blend of inorganic binders, hydraulic <br />cement, fillers and lightweight aggregate formulated for mixing with water at Project site <br />to form a nonshrinking, homogeneous mortar. <br />H. Pillows/Bags: Reusable heat -expanding pillows/bags consisting of glass -fiber cloth cases <br />filled with a combination of mineral -fiber, water -insoluble expansion agents, and fire - <br />retardant additives. Where exposed, cover openings with steel -reinforcing wire mesh to <br />protect pillows/bags from being easily removed. <br />I. Silicone Foams: Multicomponent, silicone -based liquid elastomers that, when mixed, <br />expand and cure in place to produce a flexible, nonshrinking foam. <br />J. Silicone Sealants: Single -component, silicone -based, neutral -curing elastomeric sealants. <br />2.4 MIXING <br />A. Penetration Firestopping Materials: For those products requiring mixing before <br />application, comply with penetration firestopping system manufacturer's written <br />instructions for accurate proportioning of materials, water (if required), type of mixing <br />equipment, selection of mixer speeds, mixing containers, mixing time, and other items or <br />procedures needed to produce products of uniform quality with optimum performance <br />characteristics for application indicated. <br />PART 3 - EXECUTION <br />3.1 EXAMINATION <br />A. Examine substrates and conditions, with Installer present, for compliance with <br />requirements for opening configurations, penetrating items, substrates, and other <br />conditions affecting performance of the Work. <br />B. Proceed with installation only after unsatisfactory conditions have been corrected. <br />3.2 PREPARATION <br />A. Surface Cleaning: Before installing penetration firestopping systems, clean out openings <br />immediately to comply with manufacturer's written instructions and with the following <br />requirements: <br />1. Remove from surfaces of opening substrates and from penetrating items foreign <br />materials that could interfere with adhesion of penetration firestopping materials. <br />2. Clean opening substrates and penetrating items to produce clean, sound <br />surfaces capable of developing optimum bond with penetration firestopping <br />materials. Remove loose particles remaining from cleaning operation. <br />3. Remove laitance and form -release agents from concrete. <br />B. Prime substrates where recommended in writing by manufacturer using that <br />manufacturer's recommended products and methods. Confine primers to areas of bond; <br />do not allow spillage and migration onto exposed surfaces. <br />3.3 INSTALLATION <br />A. General: Install penetration firestopping systems to comply with manufacturer's written <br />installation instructions and published drawings for products and applications. <br />PENETRATION FIRESTOPPING 078413 - 4 <br />