ASTM_F_2471_-_13.pdf

Designation:F247113Standard Practice forInstallation of Thick Poured Lightweight Cellular ConcreteUnderlayments and Preparation of the Surface to ReceiveResilient Flooring1This standard is issued under the fixed designation F2471;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice covers the installation and preparation ofthe thick poured lightweight cellular concrete underlaymentsover wood structural panel subfloors in commercial structuresor over concrete floors in commercial structures and thepreparation of the thick poured lightweight cellular concreteunderlayment surface prior to the installation of resilientflooring in commercial buildings.1.2 This practice points out the factors that are required tobe controlled while installing thick poured lightweight cellularconcrete underlayment as a base for resilient flooring.1.3 This practice does not cover the structural adequacy ofthe wood structural panel subfloor or concrete subfloor.Thestructural integrity of assemblies is governed by local buildingcodes.1.4 This practice does not supercede the thick pouredlightweight cellular concrete underlayment manufacturers,adhesive manufacturers or resilient flooring manufacturerswritten instructions.Consult the individual manufacturer forspecific recommendations.1.5 Thick poured lightweight cellular concrete underlay-ments are not suitable for use on concrete slabs on ground dueto potential moisture problems arising from moisture intrusion,unless an adequate vapor retarder or vapor barrier is presentdirectly beneath the concrete subfloor.1.6 The values stated in inch-pound units are to be regardedas standard.The values stated in parentheses are mathematicalconversions to SI Units,which are provided for informationonly.1.7This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C330 Specification for Lightweight Aggregates for Struc-tural ConcreteF141 Terminology Relating to Resilient Floor CoveringsF710 Practice for Preparing Concrete Floors to ReceiveResilient FlooringF2170 Test Method for Determining Relative Humidity inConcrete Floor Slabs Using in situ ProbesF1482 Practice for Installation and Preparation of PanelType Underlayments to Receive Resilient FlooringF2678 Practice for Preparing Panel Underlayments,ThickPoured Gypsum Concrete Underlayments,Thick PouredLightweight Cellular Concrete Underlayments,and Con-crete Subfloors with Underlayment Patching Compoundsto Receive Resilient Flooring3.Terminology3.1 Definitions used in this practice shall be in accordancewith Terminology F141.3.2 Definitions of Terms Specific to This Standard:3.2.1 fully adhered flooring,nresilient flooring which hasadhesive under the entire product,bonding it to the underlay-ment surface(see Practice F1482).3.2.2 non-fully adhered flooring,nresilient flooring thatmay be loose laid,in which no adhesive is utilized,or partiallybonded to the surface of the underlayment,typically at seamsand the surrounding perimeter of the product(see PracticeF1482).3.2.3 thick poured lightweight cellular concrete underlay-ment,nthat layer of material composed primarily of Portlandcement(conforming to,Type I,II,or Block Cement)slurry,1This practice is under the jurisdiction of ASTM Committee F06 on ResilientFloor Coverings and is the direct responsibility of Subcommittee F06.40 onPractices.Current edition approved May 1,2013.Published June 2013.Originallyapproved in 2005 as F2471-05.Last previous edition approved in 2008 as F2471-08.DOI:10.1520/F2471-13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 sand,water,pea gravel and foam that is mixed,pumped andpoured at a minimum thickness of 112in.(38 mm)in a liquidstate and installed on or over a subfloor to provide anunderlayment.3.2.4 wood structural panel,na panel manufactures fromveneers,or wood strands or wafers,or a combination of veneerand wood strands,or wafers,bonded together with waterproofsynthetic resins or other suitable,waterproof bonding systems.4.Significance and Use4.1 This practice provides minimum recommendations forthe installation of thick poured lightweight cellular concretefloor underlayments suitable to receive resilient floor cover-ings.This practice establishes the proper p