1、Designation:E2751/E2751M17aStandard Practice forDesign and Performance of Supported Laminated GlassWalkways1This standard is issued under the fixed designation E2751/E2751M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of
2、last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice addresses elements related to load-bearingglass walkways,glass treads,and glass landings constructedwith lam
3、inated glass.This standard includes performance,design,and safe behavior considerations.It addresses thecharacteristics unique to glass and laminated glass.Issues thatare common to all walkways,such as slip resistance,areaddressed in existing referenced standards.1.2 This practice does not address g
4、lass walkways con-structed with monolithic glass,glass block,insulating glassunits,glass tiles that are directly bonded to a non-glassstructural substrate,or glass walkways intended to supportvehicular traffic.1.3 The values stated in either SI units or inch-pound unitsare to be regarded separately
5、as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.4 This standard does not purport to address all of thesafety concerns,if any,as
6、sociated 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.1.5 This international standard was developed in accor-dance with internationally recognized princi
7、ples on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2C1036 Specification for Flat GlassC10
8、48 Specification for Heat-Strengthened and Fully Tem-pered Flat GlassC1172 Specification for Laminated Architectural Flat GlassE631 Terminology of Building ConstructionsE1300 Practice for Determining Load Resistance of Glass inBuildingsF1637 Practice for Safe Walking SurfacesF2508 Practice for Valid
9、ation,Calibration,and Certificationof Walkway Tribometers Using Reference Surfaces2.2 ANSI Standard:3A137.1 American National Standard Specification for Ce-ramic Tile3.Terminology3.1 DefinitionsFor definitions of general terms related tobuilding construction used in this practice,refer to Terminol-o
10、gy E631.3.2 Definitions of Terms Specific to This Standard:3.2.1 duration of loadthe period of continuous applicationof a given load,or the aggregate of periods of intermittentapplications of the same load.3.2.1.1 DiscussionAny load duration longer than one hourshall be considered a permanent load.U
11、niformly distributedlive loads shall have a load duration of at least one hour.Concentrated live loads shall have a load duration of at leastten minutes.3.2.2 ethylene vinyl acetate(EVA)interlayerco-polymerof ethylene and vinyl acetate used to permanently bond two ormore lites of glass.1This practic
12、e is under the jurisdiction of ASTM Committee E06 on Perfor-mance of Buildings and is the direct responsibility of Subcommittee E06.56 onPerformance of Railing Systems and Glass for Floors and Stairs.Current edition approved July 1,2017.Published July 2017.Originally approvedin 2011.Last previous ed
13、ition approved in 2017 as E2751/E2751M17.DOI:10.1520/E2751_E2751M-17A.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 webs
14、ite.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with intern
15、ationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 3.2.3 glass-clad polycarbonate laminateassembly con
16、-sisting of two or more lites of glass and one or more sheets ofpolycarbonate bonded by interlayers.3.2.4 ionomer interlayera partially neutralized copolymerof ethylene and acrylic or methacrylic acid,used to perma-nently bond two or more lites of glass.3.2.5 laminated glassan assembly consisting of two ormore lites of glass bonded by an interlayer.3.2.6 liquid resin interlayerliquid formulations,generallypolyester-,urethane-,or acrylic-based,that react to form solidinterlayers after being intro
