ASTM_C_1786_-_18.pdf

Designation:C178618Standard Specification forSegmental Precast Reinforced Concrete Box Sections forCulverts,Storm Drains,and Sewers Designed According toAASHTO LRFD1This standard is issued under the fixed designation C1786;the number immediately following the designation indicates the year oforiginal adoption or,in 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 specification covers precast reinforced concretebox sections comprised of separate segments that once prop-erly field assembled make the final structure.These structuresare intended to be used for the construction of culverts and forthe conveyance of storm water,industrial wastes and sewage.NOTE1This specification is primarily a manufacturing and purchas-ing specification.However,box culverts manufactured to this standard areintended to meet the design requirements of the AASHTO LRFD BridgeDesign Specifications,and as such,design guidance is included inAppendix X1.NOTE2The successful performance of this product depends upon theproper selection of the box section,bedding,backfill,and care that theinstallation conforms to the construction specifications.The purchaser ofthe precast reinforced concrete box sections specified herein is cautionedthat proper correlation of the loading conditions and the field requirementswith the box section specified,and provision for inspection at theconstruction site,are required.1.2 The values stated in inch-pound units are to be regardedas standard.No other units of measurement are included in thisstandard.1.3 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2A615/A615M Specification for Deformed and Plain Carbon-Steel Bars for Concrete ReinforcementA706/A706M Specification for Deformed and Plain Low-Alloy Steel Bars for Concrete ReinforcementA1064/A1064M Specification for Carbon-Steel Wire andWelded Wire Reinforcement,Plain and Deformed,forConcreteC33/C33M Specification for Concrete AggregatesC150/C150M Specification for Portland CementC260/C260M Specification for Air-Entraining Admixturesfor ConcreteC309 Specification for Liquid Membrane-Forming Com-pounds for Curing ConcreteC494/C494M Specification for Chemical Admixtures forConcreteC497 Test Methods for Concrete Pipe,Manhole Sections,orTileC595/C595M Specification for Blended Hydraulic CementsC618 Specification for Coal Fly Ash and Raw or CalcinedNatural Pozzolan for Use in ConcreteC822 Terminology Relating to Concrete Pipe and RelatedProductsC989/C989M Specification for Slag Cement for Use inConcrete and MortarsC1017/C1017M Specification for Chemical Admixtures forUse in Producing Flowing ConcreteC1116/C1116M Specification for Fiber-Reinforced ConcreteC1602/C1602M Specification for Mixing Water Used in theProduction of Hydraulic Cement Concrete2.2 AASHTO Standards:3AASHTO LRFD Bridge Design SpecificationsAASHTO LRFD Bridge Construction Specifications2.3 ACI Standards:4ACI 318 Building Code Requirements for Structural Con-crete3.Terminology3.1 Definitions of Terms Specific to This Standard:1This test method is under the jurisdiction of ASTM Committee C13 onConcrete Pipe and is the direct responsibility of Subcommittee C13.07 onAcceptance Specifications and Precast Concrete Box Sections.Current edition approved Jan.1,2018.Published February 2018.Originallyapproved in 2014.Las previous edition approved in 2017 as C1786 17.DOI:10.1520/C178618.2For 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.3Available from American Association of State Highway and TransportationOfficials(AASHTO),444 N.Capitol St.,NW,Suite 249,Washington,DC 20001,http:/www.transportation.org.4Available from American Concrete Institute(ACI),P.O.Box 9094,FarmingtonHills,MI 48333-9094,http:/www.concrete.org.*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 StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 3.1.1 box sectionthe completed box culvert unit with allsegments adjoined(see Fig.1 for configuration options).3.1.2 box segmentthe individual piece(top slab,bottomslab,or