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iiesignation: <br />E1745 —11 <br />TION taF-rt:anurrarrar. <br />Standard Specification for <br />Plastic Water Vapor Retarders Used in Contact with Soil or <br />Granular Fill under Concrete Slabs' <br />This standard is issued under the fixed designation E1745; the number immediately following the designation indicates the year of <br />original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapprovaL A <br />supereript epsilon (s) indicates an editorial change since the last revision or reapproval. <br />1. Scope <br />1.1 This specification covers flexible, preformed sheet <br />membrane materials to be used as vapor retarders in contact <br />with soil or granular fill under concrete slabs. <br />1.1.1 This specification does not cover bituminous vapor <br />retarders. See Specification E1993 for information on bitumi- <br />nous vapor retarders_ <br />1.2 The specified tests are conducted on new materials and <br />materials that have been conditioned or exposed to simulate <br />potential service conditions. <br />1.3 The values stated in inch -pound units are to be regarded <br />as standard. The values given in parentheses are mathematical <br />conversions to SI units that are provided for information only <br />and are not considered standard. <br />2. Referenced Documents <br />2.1 ASTM Srandards:2 <br />C 165 Terminology Relating to Thermal Insulation <br />D828 Test Method for Tensile Properties of Paper and <br />Paperboard Using Constant -Rate -of -Elongation Appara- <br />tus-, <br />ppara- <br />tus 4 <br />D882 Test Method for Tensile Properties of Thin Plastic <br />Sheeting <br />D1709 Test Methods for Impact Resistance of Plastic Film <br />by the Free -Falling Dart Method <br />E961E96M Test Methods for Water Vapor Transmission of <br />Materials <br />E154 Test Methods for Water Vapor Retarders Used in <br />t This specification is under the jurisdiction of ASTM Committee E06 on <br />Performance of Buildings and is the direct responsibility of Subcommittee E06.21 <br />on Serviceability. <br />Current edition approved Oct. 1. 2011. Published October 2011. Originally <br />approved in 1996. Last previous edition approved in 2009 as E1745-09. DOI: <br />10.1520/E 1745-11. <br />2 For referenced ASTNt standards, visit the ASTIM website, www.astm.org, or <br />contact ASTIvt Customer Service at service@astm.org. For Annual Booz of ASTM <br />Standards volume information. refer to the standard's Document Summary page on <br />the ASTM website. <br />3 Withdrawn. The last approved version of this historical standard is referenced <br />on www.astm.org. <br />Contact with Earth Under Concrete Slabs, on Walls, or as <br />Ground Cover <br />E631 Terminology of Building Constructions <br />E1643 Practice for Selection, Design, Installation, and In- <br />spection of Water Vapor Retarders Used in Contact with <br />Earth or Granular Fill Under Concrete Slabs <br />E1993 Specification for Bituminous Nater Vapor Retarders <br />Used in Contact with Soil or Granular Fill Under Concrete <br />Slabs <br />F1249 Test Method for Water Vapor Transmission Rate <br />Through Plastic Film and Sheeting Using a Modulated <br />Infrared Sensor <br />3. Terminology <br />3.1 Definitions—For definitions of terms used in this speci- <br />fication, see Terminologies C 168 and E631. <br />3.2 Definitions of Tertns Specific. to This Standard: <br />3.2.1 perm, n—the time rate of water vapor migration <br />through a material or a construction of one grain per hour, <br />square foot, inch of mercury pressure difference. <br />3.2.1.1 Discussion If a specification states that a one perm <br />limit is required, the same flow rate will be obtained from the <br />following relationships: <br />1 perm = t grain/h • ft2 in. - Hg (inch -pound) <br />= 57.2 10-12 kg/(Pa • s • m2) (S1 fundamental units) <br />= 57.2 ng/(Pa - s • m2) (SI frequently used) <br />= 0.66 g/24 It • m2 • mm Hg (St has been used but is now obso- <br />lete) <br />3.2.2 vapor retarder, n --(formerly vapor barrier) a material <br />or construction that impedes the transmission of water vapor <br />under specified conditions. <br />3.2.3 water vapor permeability, n—a property of material <br />which is water vapor permeance through unit thickness. Since <br />materials that provide resistance to vapor flow are never used: <br />in unit thickness, the preferred evaluation of both materials and. <br />constructions is the permeance. <br />32.4 water -vapor penneance, n—the time rate of watef <br />vapor flow through unit area of the known thickness of a fiat <br />material or a construction normal to two specific parallel <br />Copyright 0 AST:Nt International. 100 Barr Harbor a,rve, PO Box C700, West Conshohocken, PA 1942&2959, United States. <br />CPYrght ASTM Internarwrrat <br />Prorded by IHS untter'rcense vrtri ASTM <br />No reprducti n or net va'kpamt�d V=ut ite-tee I— IHS <br />L. fo:CONDOR EARTH TECHNOLOGIES INC 1,1227321^,fi3Ooi". Tt4l.RRF La-CON�.-OCREAP.7H.0 <br />Not For Resale;c013-V _07 21:48::5 GUT <br />