ASTM_C_1744_-_12.pdf

Designation:C174412Standard Practice forInstallation and Use of Radiant Barrier Systems(RBS)inCommercial/Industrial Building Construction1This standard is issued under the fixed designation C1744;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 has been prepared for use by the designer,specifier,builder,and the installer of radiant barrier systems(RBS)for use in commercial/industrial building constructionnot otherwise restricted from use.The scope is limited toinstruction relative to the use and installation of RBS,includ-ing a surface(s)normally having an emittance of 0.1 or less,such as metallic foil or metallic foil deposits,mounted onsubstrates.Some examples that this practice is intended toaddress include:(1)low-emittance surfaces in vented buildingenvelope cavities intended to retard radiant transfer across theairspace:(2)low-emittance surfaces at interior building sur-faces intended to retard radiant transfer to,or from,buildinginhabitants;and(3)low-emittance surface at interior buildingsurfaces intended to reduce radiant transfer to,or from,radiantheating or cooling systems.1.2 This practice covers the installation process from pre-installation inspection through the post-installation procedure.It does not cover the production of the radiant barrier materials.(See Specification C1313.)1.3 This practice is not intended to replace the manufactur-ers installation instructions but shall be used in conjunctionwith such instructions.This practice is not intended to super-cede local,state,federal,or international codes.1.4 This practice assumes that the installer possesses a goodworking knowledge of the applicable codes and regulations,safety practices,tools,equipment,and methods necessary forinstallation of radiant barrier materials.It also assumes that theinstaller understands the fundamentals of commercial/industrial building construction that affect the installation ofRBS.1.5 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.6 This 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.For specificprecautionary statements see Sections 5 and 7.1.6.1 When the installation or use of radiant barriermaterials,accessories,and systems has the potential to posesafety or health problems,the manufacturer shall provide theuser appropriate current information regarding any knownproblems associated with the use of the product of the companyand shall also specify protective measures.2.Referenced Documents2.1 ASTM Standards:2C168 Terminology Relating to Thermal InsulationC1313 Specification for Sheet Radiant Barriers for BuildingConstruction Applications2.2 NFPA Standards:3NFPA 54 National Fuel Gas CodeNFPA 211 Standard for Chimneys,Fireplaces and Vents2.3 Other Document:4CPSC Product Safety Fact Sheet No.18“The Home Elec-trical System”3.Terminology3.1 DefinitionsFor definitions of terms used in thispractice,refer to Terminology C168.3.2 Definitions of Terms Specific to This Standard:3.2.1 applicator,nperson or persons who apply radiantbarrier materials in buildings.3.2.2 conditioned space,nany space in a building that isserved by a heating or cooling system.1This practice is under the jurisdiction of ASTM Committee C16 on ThermalInsulation and is the direct responsibility of Subcommittee C16.21 on ReflectiveInsulation.Current edition approved May 1,2012.Published May 2012.Originallyapproved in 2010.Last previous edition approved in 2010 as C174410.DOI:10.1520/C174412.2For 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.3Available from National Fire Protection Association(NFPA),1 BatterymarchPark,Quincy,MA 02169-7471,http:/www.nfpa.org.4Available from U.S.Consumer Product Safety Commission(CPSC),4330 EastWest Hwy.,Bethesda,MD 20814,http:/www.cpsc.gov.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.2.3 girts,ntypically,1 or 2 nominal lumber,installedover rafters or trusses,to be used for securing both the RBSand metal decking,which is used on wall assemblies forsecuring metal siding.3.2.4 open air space,nvented building cavity(forexample,an open-ended wall or ceiling assembly)or a largeconditioned or unconditioned building space.3.2.4.1 Disc