1、Designation:D7492/D7492M16aStandard Guide forUse of Drainage System Media with Waterproofing Systems1This standard is issued under the fixed designation D7492/D7492M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last re
2、vision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This guide makes recommendations for the selectionand application of prefabricated drainage media used in con-junction with waterp
3、roofing systems on horizontal and verticalsurfaces.Drainage media considered include rigid and semi-rigid insulation boards and rigid materials including plastics.This guide considers drainage media as it relates to theperformance of the waterproofing system,so its primary focusis draining water awa
4、y from the membrane.This guide doesnot cover in detail other aspects or functions of drainagesystem performance such as efficiency of soil dewatering.Thescope of this guide does not cover other drainage mediaincluding gravel and filter fabric systems that can be con-structed.The scope of this guide
5、does not cover drainagematerials or drainage system designs used for vegetative roofsystems.Vegetative roof systems require specialized designs.1.2 The committee with jurisdiction over this standard is notaware of any other comparable standards published by otherorganizations.1.3 The values stated i
6、n either SI units or inch-pound unitsare to be regarded separately 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 stand
7、ard may involve hazardous materials,opera-tions and equipment.This standard does not purport to addressall of the safety concerns,if any,associated with its use.It isthe responsibility of the user of this standard to establishappropriate safety and health practices and determine theapplicability of
8、regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C165 Test Method for Measuring Compressive Properties ofThermal InsulationsC898/C898M Guide for Use of High Solids Content,ColdLiquid-Applied Elastomeric Waterproofing Membranewith Separate Wearing CourseC981 Guide for Des
9、ign of Built-Up Bituminous MembraneWaterproofing Systems for Building DecksC1471/C1471M Guide for the Use of High Solids ContentCold Liquid-Applied Elastomeric Waterproofing Mem-brane on Vertical SurfacesD896 Practice for Resistance of Adhesive Bonds to Chemi-cal ReagentsD1079 Terminology Relating t
10、o Roofing and WaterproofingD2434 Test Method for Permeability of Granular Soils(Constant Head)(Withdrawn 2015)3D3273 Test Method for Resistance to Growth of Mold on theSurface of Interior Coatings in an Environmental Cham-berD3385 Test Method for Infiltration Rate of Soils in FieldUsing Double-Ring
11、InfiltrometerD4511 Test Method for Hydraulic Conductivity of Essen-tially Saturated PeatD4630 Test Method for Determining Transmissivity andStorage Coefficient of Low-Permeability Rocks by In SituMeasurements Using the Constant Head Injection TestD4716/D4716M Test Method for Determining the(In-plane
12、)Flow Rate per Unit Width and Hydraulic Transmissivityof a Geosynthetic Using a Constant HeadD5898/D5898M Guide for Details forAdhered Sheet Water-proofing1This guide is under the jurisdiction of ASTM Committee D08 on Roofing andWaterproofing and is the direct responsibility of Subcommittee D08.22 o
13、n Water-proofing and Dampproofing Systems.Current edition approved Dec.1,2016.Published December 2016.Originallyapproved in 2011.Last previous edition approved in 2016 as D7492/D7492M 16.DOI:10.1520/D7492_D7492M-16A.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Cu
14、stomer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,Wes
15、t Conshohocken,PA 19428-2959.United States1 D6622 Guide for Application of Fully Adhered Hot-AppliedReinforced Waterproofing SystemsE154/E154M Test Methods for Water Vapor Retarders Usedin Contact with Earth Under Concrete Slabs,on Walls,oras Ground Cover3.Terminology3.1 Refer to Terminology D1079 f
16、or definitions of termsused in this guide.4.Summary of Practice4.1 This guide describes a method to estimate the amount ofwater a drainage system may need to carry.The guide alsooffers descriptions of the various drainage systems in existencetoday along with suggestions on how different building situa-tions will require different performance characteristics from thedrainage medium chosen.Items to be aware of during theinstallation of drainage systems is also covered along withillustrations of ty