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SECTION 09651 <br />RESILIF►iT TILE FLOORING <br />3.2 PREPARATION <br />A. Prepare eubstrates according lo manufacturer's written instructiors to ensure adhesion of <br />resilient products. <br />B. Concrete Substrates: Prepare according to ASTM F 710. <br />1. Verify that substrates are dry and free of curing compounds, sealers, and hardeners <br />2. Remove substrate coatings and other substances that are incompatible with adhe: ives <br />and iha; cor.tain soap, wax, oil, or silicone, using mechanical methods r=commended by <br />manufacturer. Do nol use soivents. <br />3. Alka!inity and Adhesion Testing: Perform tests recommended by manutacturer. Proceed <br />wilh installalion only after substrales pass testing. <br />4. Moisture Testing: Perform tests recommended by manufacturer and as fotlows. Proceed <br />with instaliation only after substrates pass testing. <br />a. Per(orm anhydrous calcium chloride lest, ASTM F 1869. Proceed with installation <br />only after substrates have maximum moisture-vapor-emission rate of 3 Ib o( <br />waterl1000 sq. ft. in 24 hours. <br />b. Perform relative humidity test using in situ probes, ASTM F 2170. Proceed witii <br />installation only after su!�strales have a maximum 75% relative humidity level <br />measuremenl. <br />C. Fill cracks, holes, and depressions ii� substrates with trowelable levelir.g and patching <br />compour.d and remove bumps and ridges to produce a unitorm and smooth substrate. <br />1. ensure tha! any surace filled is finish�d smocihly with out bumps or ridges <br />D. Do not install floor tiles until they are same temperature as space where they are to be installed. <br />Move resilienl producls and installation malerials into spaces vihere they will be installed <br />at least 48 hours in advance of installation. <br />t. Sweep and vacuum clean substrates to be covered by resilie�t products immediately before <br />installation. <br />3.3 FLOOR TILE INSTALLATION <br />A. Comply with manufacturer's wrilten instructions for installing floor tile. <br />B. Lay out iloor tiles from center marks established with principal walls, discounting minor oHsets, <br />so tilcs at opposile edges uf room are of equal width. Adjusl as necessary to avoid using cut <br />widths that equal less than one-half tile at perimeter. <br />Lay tiles square with room axis. <br />C. Match (loor tiles for color ar.d pattern by selecting tiles from cartons in Ihe same sequence as <br />manufactured and packaged, if so numbered. Discard broken, cracked, chipped, or deformed <br />liles. <br />1. Lay tiles in pattem chosen by arcnilect as shown or request pattem with initial selecticn <br />submittal in not shown <br />2. Ii a pattern with grain is selected lay with grain direction altemating in adjacent tiles <br />(basket-weave pattern). <br />Capital Projccls Commutcr Rail 09651 - 3 IFB No. RTA/CP 21-06 <br />fvcrclt Station Phasc 2 RE:SILIGNT T1LE FLOORING Addendum No. 4 <br />