1、Designation:B788/B788M09(Reapproved 2014)Standard Practice forInstalling Factory-Made Corrugated Aluminum Culverts andStorm Sewer Pipe1This standard is issued under the fixed designation B788/B788M;the number immediately following the designation indicates the yearof original adoption or,in the case
2、 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.Scope*1.1 This practi
3、ce describes procedures,soils,and soil place-ment for the proper installation of corrugated aluminumculverts and storm sewers in either trench or projectioninstallations.A typical trench installation is shown in Fig.1,and a typical embankment(projection)installation is shown inFig.2.The pipes descri
4、bed in this practice are manufactured ina factory and furnished to the job in lengths ordinarily from 10to 30 ft 3 to 9 m,with 20 ft 6 m being common,for fieldjoining.This practice applies to structures designed in accor-dance with Practice B790/B790M.1.2 The values stated in either SI units or inch
5、-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.1.2.1 SI UnitsSI units are shown in the
6、 text in brackets,and they are the applicable values for metric installation.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 determine
7、 the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2B745/B745M Specification for Corrugated Aluminum Pipefor Sewers and DrainsB790/B790M Practice for Structural Design of CorrugatedAluminum Pipe,Pipe-Arches,and Arches for Culverts,Storm Sewers,and Oth
8、er Buried ConduitsD698 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 Ballo
9、on MethodD2487 Practice for Classification of Soils for EngineeringPurposes(Unified Soil Classification System)D2937 Test Method for Density of Soil in Place by theDrive-Cylinder MethodD6938 Test Method for In-Place Density and Water Contentof Soil and Soil-Aggregate by Nuclear Methods(ShallowDepth)
10、3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 bedding,nthe earth or other material on which apipe is supported.3.1.2 haunch,nthe portion of the pipe cross sectionbetween the maximum horizontal dimension and the top of thebedding.3.1.3 invert,nthe lowest point on the pipe cros
11、s section;also,the bottom portion of a pipe.3.1.4 pipe,na conduit having full circular shape;also,ina general context,all structure shapes covered by this practice.3.1.5 pipearch,na pipe with an approximate semicircu-lar crown,small-radius corners,and large-radius invert.4.Significance and Use4.1 Co
12、rrugated aluminum pipe functions structurally as aflexible ring which is supported by and interacts with thecompacted surrounding soil.The soil constructed around thepipe is thus an integral part of the structural system.It istherefore important to ensure that the soil structure or backfillis made u
13、p of acceptable material and is well-constructed.Field verification of soil structure acceptability using TestMethods D1556,D2167,D2937,or D6938 as applicable,andcomparing the results with Test Method D698 in accordance1This practice is under the jurisdiction of ASTM Committee B07 on LightMetals and
14、 Alloys and is the direct responsibility of Subcommittee B07.08 onCorrugated Aluminum Pipe and Corrugated Aluminum Structural Plate.Current edition approved May 1,2014.Published June 2014.Originallyapproved in 1988.Last previous edition approved in 2009 as B788/B788M 09.DOI:10.1520/B0788_B0788M-09R1
15、4.2For 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.*A Summary of Changes section appears at the end of this standar
16、dCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 with the specifications for each project,is the most reliablebasis for installation of an acceptable structure.The requireddensity and method of measurement are not specified by thispractice,but they must be established in the specifications foreach project.5.Trench Excavation5.1 To obtain anticipated structural performance of corru-gated aluminum pipe it is not necessary to control tre
