ASTM_A_798_-_A_798M_-_13.pdf

Designation:A798/A798M13Standard Practice forInstalling Factory-Made Corrugated Steel Pipe for Sewersand Other Applications1This standard is issued under the fixed designation A798/A798M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of 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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This practice covers procedures,soils,and soil place-ment for the proper installation of corrugated steel pipe andpipe-arches produced to Specification A760/A760M or A762/A762M,in either trench or embankment installations.Atypicaltrench installation and a typical embankment(projection)installation are shown in Figs.1 and 2,respectively.The pipesdescribed in this practice are manufactured in a factory andfurnished to the job in lengths ordinarily from 10 to 30 ft 3 to9 m,with 20 ft 6 m being common,for field joining.Thispractice applies to structures designed in accordance withPractice A796/A796M.1.2 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 determine the applica-bility of regulatory limitations prior to use.1.3 This specification is applicable to design in inch-poundunits as A798 or in SI units as A798M.Inch-pound units andSI units are not necessarily equivalent.SI units are shown inbrackets in the text for clarity,but they are the applicablevalues when the installation is to be performed in accordancewith A798M.2.Referenced Documents2.1 ASTM Standards:2A760/A760M Specification for Corrugated Steel Pipe,Metallic-Coated for Sewers and DrainsA762/A762M Specification for Corrugated Steel Pipe,Poly-mer Precoated for Sewers and DrainsA796/A796M Practice for Structural Design of CorrugatedSteel Pipe,Pipe-Arches,and Arches for Storm and Sani-tary Sewers and Other Buried ApplicationsA902 Terminology Relating to Metallic Coated Steel Prod-uctsA978/A978M Specification for Composite Ribbed SteelPipe,Precoated and Polyethylene Lined for Gravity FlowSanitary Sewers,Storm Sewers,and Other Special Appli-cationsA1019/A1019M Specification for Closed Rib Steel Pipewith Diameter of 36 in.900 mm or Less,PolymerPrecoated for Sewers and Drains(Withdrawn 2012)3A1042/A1042M Specification for Composite CorrugatedSteel Pipe for Sewers and DrainsD698 Test Methods for Laboratory Compaction Character-istics of Soil Using Standard Effort(12 400 ft-lbf/ft3(600kN-m/m3)D1556 Test Method for Density and Unit Weight of Soil inPlace by Sand-Cone MethodD2167 Test Method for Density and Unit Weight of Soil inPlace by the Rubber Balloon MethodD2487 Practice for Classification of Soils for EngineeringPurposes(Unified Soil Classification System)D2922 Test Methods for Density of Soil and Soil-Aggregatein Place by Nuclear Methods(Shallow Depth)(With-drawn 2007)3D2937 Test Method for Density of Soil in Place by theDrive-Cylinder Method3.Terminology3.1 DefinitionsFor definitions of general terms used in thispractice,refer to Terminology A902.For definition of termsspecific to this standard,refer to 3.2.3.2 Definitions of Terms Specific to This Standard:3.2.1 bedding,nthe earth or other material on which apipe is supported.3.2.2 haunch,nthe portion of the pipe cross sectionbetween the maximum horizontal dimension and the top of thebedding.1This practice is under the jurisdiction of ASTM Committee A05 on Metallic-Coated Iron and Steel Products and is the direct responsibility of SubcommitteeA05.17 on Corrugated Steel Pipe Specifications.Current edition approved May 1,2013.Published June 2013.Originallyapproved in 1982.Last previous edition approved in 2007 as A798/A798M-07.DOI:10.1520/A0798_A0798M-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,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,West Conshohocken,PA 19428-2959.United States1 3.2.3 invert,nthe lowest point on the pipe cross section;also,the bottom portion of a pipe.3.2.4 pipe,na conduit having full circular shape;also,ina general context,all structure shapes covered by this practice.3.2.5 pipe-arch,nan arch shape with an approximatesemicircular crown,small-radius corners,and large-radiusinvert.4.Significance and Use4.1 Corrugated steel pipe functions structurally as a flexiblering which is supported by and interacts with the compactedsurrounding soil.The soil constructed around the pipe is thusan integral part of the structural“system.”It is thereforeimportant to ensure that the