1、Designation:E235711Standard Test Method forDetermining Air Leakage of Air Barrier Assemblies1This standard is issued under the fixed designation E2357;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number
2、 in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the determination of the airleakage rate of air barrier assemblies that are used in buildingenclosures.This procedure mea
3、sures the air leakage of arepresentative air barrier assembly before and after exposure tospecific conditioning cycles and then assigns a rating depen-dent upon the results.Although this is a laboratory procedure,the method may also be applied to site mockups.1.2 The values stated in SI units are to
4、 be regarded asstandard.No other units of measurement are included in thisstandard.1.3 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 det
5、ermine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2E283 Test Method for Determining Rate of Air LeakageThrough Exterior Windows,Curtain Walls,and DoorsUnder Specified Pressure Differences Across the Speci-menE330 Test Method for Structural Perf
6、ormance of ExteriorWindows,Doors,Skylights and Curtain Walls by UniformStatic Air Pressure DifferenceE631 Terminology of Building ConstructionsE783 Test Method for Field Measurement of Air LeakageThrough Installed Exterior Windows and DoorsE1677 Specification forAir Barrier(AB)Material or Systemfor
7、Low-Rise Framed Building WallsE2178 Test Method forAir Permeance of Building Materials3.Terminology3.1 Definitions:3.1.1 For definitions of general terms related to buildingconstruction used in this test method,refer to TerminologyE631.3.2 Definitions of Terms Specific to This Standard:3.2.1 air bar
8、riera designated“plane”of reduced air flowbetween different environments.3.2.2 air barrier accessorya transitional component of theair barrier that provides continuity.3.2.3 air barrier assemblythe air barrier materials andaccessories that provide a continuous designated plane to themovement of air
9、through portions of building enclosure assem-blies.3.2.4 air barrier materiala primary element that providesa continuous barrier to the movement of air.3.2.5 air barrier systema combination of air barrier as-semblies installed to provide a continuous barrier to themovement of air through building en
10、closures.3.2.6 air leakage ratethe quantitative measure of airpassage through a set surface area of an assembly within agiven time period under a pressure differential between the twosides of the assembly.3.2.7 building enclosurea system of building componentsand materials designed and installed in
11、such a manner as toprovide a barrier between different environments,includingdissimilar interior environments.3.2.8 continuityan uninterrupted succession of an air bar-rier materials,accessories and assemblies.3.2.9 durabilitythe ability of a building component toperform its required functions over
12、a period of time within theenvironment to which it is exposed.3.2.10 negative pressureair pressure on one side of abuilding enclosure lower than on the other side.3.2.11 positive pressureair pressure on one side of abuilding enclosure higher than on the other side.4.Summary of Test Method4.1 This te
13、st method establishes a specimen preparationprotocol with which an air barrier assembly may be evaluated.Atest specimen is constructed and tested in separate pressures.1This test method is under the jurisdiction of ASTM Committee E06 onPerformance of Buildings and is the direct responsibility of Sub
14、committee E06.41on Air Leakage and Ventilation Performance.Current edition approved Sept.1,2011.Published October 2011.Originallyapproved in 2005.Last previous edition approved in 2005 as E235705.DOI:10.1520/E2357-11.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM C
15、ustomer 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 Up to three specimens are constructed,e
16、ach additionallyrepresenting different field conditions.Specimen 3 is optionaland may be combined with Specimen 2.By applying airpressure differentials across the specimens in stages,the airbarrier and system components may be evaluated as to theirspecific air leakage.5.Significance and Use5.1 This method is intended to simulate the performance ofvarious air barrier materials/accessories when combined intoan assembly.Based upon the results of the measurements,thisprocedure then assigns an air le
