1、Designation:F278713An American National StandardStandard Practice forStructural Design of Thermoplastic Corrugated WallStormwater Collection Chambers1This standard is issued under the fixed designation F2787;the number immediately following the designation indicates the year oforiginal adoption or,i
2、n 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.Scope*1.1 This practice standardizes structural design of thermo-plastic corrugated wall arch-sha
3、ped chambers used forcollection,detention,and retention of stormwater runoff.Thepractice is for chambers installed in a trench or bed andsubjected to earth and live loads.Structural design includes thecomposite system made up of the chamber arch,the chamberfoot,and the soil envelope.Relevant recogni
4、zed practicesinclude design of thermoplastic culvert pipes and design offoundations.1.2 This practice standardizes methods for manufacturers ofburied thermoplastic structures to design for the time depen-dent behavior of plastics using soil support as an integral partof the structural system.This pr
5、actice is not applicable tothermoplastic structures that do not include soil support as acomponent of the structural system.1.3 This practice is limited to structural design and does notprovide guidance on hydraulic,hydrologic,or environmentaldesign considerations that may need to be addressed forfu
6、nctional use of stormwater collection chambers.1.4 Stormwater chambers are most commonly embedded inopen graded,angular aggregate which provide both structuralsupport and open porosity for water storage.Should soils otherthan open graded,angular aggregate be specified forembedment,other installation
7、 and functional concerns mayneed to be addressed that are outside the scope of this practice.1.5 Chambers are produced in arch shapes to meet classifi-cations that specify chamber rise,chamber span,minimum footwidth,minimum wall thickness,and minimum arch stiffnessconstant.Chambers are manufactured
8、with integral footings.1.6 Polypropylene chamber classifications are found inSpecification F2418.Specification F2418 also specifies cham-ber manufacture and qualification.1.7 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversio
9、ns to SI units that are provided for information onlyand are not considered standard.1.8 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 d
10、etermine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D2487 Practice for Classification of Soils for EngineeringPurposes(Unified Soil Classification System)D2990 Test Methods for Tensile,Compressive,and FlexuralCreep and Creep-Rupture of Plastic
11、sD6992 Test Method for Accelerated Tensile Creep andCreep-Rupture of Geosynthetic Materials Based on Time-Temperature Superposition Using the Stepped IsothermalMethodF2418 Specification for Polypropylene(PP)Corrugated WallStormwater Collection Chambers2.2 AASHTO LRFD Bridge Design Specifications:3Se
12、ction 3 Loads and Load Factors,3.5 Permanent Loads;3.6Live LoadsSection 10 Foundations,10.6 Spread FootingsSection 12 Buried Structures and Tunnel Liners,12.12Thermoplastic Pipes2.3 AASHTO Standard Specifications:3M 43 Standard Specification for Size of Aggregate for Roadand Bridge ConstructionM 145
13、 Standard Specification for Classification of Soils andSoil-Aggregate Mixtures for Highway Construction Pur-poses1This practice is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.65 on LandDrainage.Current edition approved Ap
14、ril 1,2013.Published April 2013.Originallyapproved in 2009.Last previous edition approved in 2011 as F278711.DOI:10.1520/F2787-13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,
15、refer to the standards Document Summary page onthe ASTM website.3AASHTO LRFD Bridge Design Specifications-Dual Units,4th Edition,2007and AASHTO Standard Specifications for Transportation Materials and Sampling,28th edition,2008.Available from American Association of State Highway andTransportation O
16、fficials(AASHTO),444 N.Capitol St.,NW,Suite 249,Washington,DC 20001.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 T 99 Standard Method of Test for Moisture-Density Rela-tions of Soils Using a 2.5-kg(5.5-lb)Rammer and a305-mm(12-in.)Drop2.4 AWWA Manual:4M 45 Manual of Water Supply Practices:Fiberglass PipeDesign3.Terminology3.1 Definitions:3.1.1 Definitions used in this