ASTM_C_1677_-_11a.pdf

Designation:C167711aStandard Specification forJoints for Concrete Box,Using Rubber Gaskets1This standard is issued under the fixed designation C1677;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.Scope1.1 This specification covers flexible joints for concrete boxsections,using rubber gaskets for leak resistant joints.Thespecification covers the design of joints and the requirementsfor rubber gaskets to be used therewith,for boxes conformingin all other respects to Specification C1433 or C1577,providedthat if there is conflict in permissible variations in dimensionsthe requirements of this specification for joints shall govern.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.2.Referenced Documents2.1 ASTM Standards:2C497 Test Methods for Concrete Pipe,Manhole Sections,orTileC822 Terminology Relating to Concrete Pipe and RelatedProductsC1433 Specification for Precast Reinforced Concrete Mono-lithic Box Sections for Culverts,Storm Drains,andSewersC1577 Specification for Precast Reinforced Concrete Mono-lithic Box Sections for Culverts,Storm Drains,andSewers Designed According to AASHTO LRFDC1619 Specification for Elastomeric Seals for Joining Con-crete Structures3.Terminology3.1 DefinitionsFor definitions of terms relating to concretepipe,see Terminology C822.4.Basis of Acceptance4.1 The acceptability of the box joints and gaskets shall bedetermined by the results of the physical test prescribed in thisspecification,if and when required,and by inspection todetermine whether the box joints and gaskets conform to thisspecification as to design and freedom from defects.5.Materials and Manufacture for Gaskets5.1 The gasket shall be fabricated from a rubber compound.The basic polymer shall be natural rubber,synthetic rubber,ora blend of both meeting the physical requirements prescribed inSpecification C1619.5.1.1 Gaskets for standard use shall meet Class C require-ments.Gaskets which require oil resistant properties shall meetClass D requirements.5.2 Circular Cross-Section Gaskets:5.2.1 Circular cross-section gaskets shall be extruded ormolded to the specified size within a tolerance of 6164in.(60.4 mm)or 61.5%of the cord diameter,whichever islarger.5.2.2 Circular cross-section gaskets shall have the nominaldesign cut length tolerance of 63%for extruded and splicedgaskets.5.3 Non-Circular Cross-Section Gaskets:5.3.1 Non-circular cross-section gaskets shall be extrudedor molded to the design size within a tolerance of 6164in.(60.4 mm)or 63.0%on any dimension,measured at anycross section,whichever is larger.5.3.2 Non-circular cross-section gaskets shall have thenominal design cut length tolerance of 63%for extruded andspliced gaskets.6.Design of Joints6.1 The manufacturer shall furnish the owner with thedetailed design of the joint or joints including design anddurometer hardness of the rubber gasket proposed to befurnished under this specification.6.1.1 The joint design shall consist of a bell or groove onone end of a unit of box,and a spigot or tongue on the adjacentend of the joining box.6.1.2 All surfaces of the joint upon or against which thegasket is capable of bearing shall be smooth,free of spalls,cracks or fractures,and imperfections that would adverselyaffect the performance of the joint.6.1.3 The joints of the box shall be of such design that theywill withstand the forces caused by the compression of the1This specification is under the jurisdiction of ASTM Committee C13 onConcrete Pipe and is the direct responsibility of Subcommittee C13.08 on Joints forPrecast Concrete Structures.Current edition approved Sept.1,2011.Published September 2011.Originallyapproved in 2009.Last previous edition approved in 2011 as C1677 11.DOI:10.1520/C1677-11A.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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 gasket when joined,without cracking or fracturing when testedin accordance with Section 9.6.1.4 The angle of taper on the surfaces of the inside of thebell or groove and the outer surface of the spigot or tonguewhere the gasket seats shall be not more than 3.5 measuredfrom the pipe axis,except that tapers up to 5 are not prohibitedif proven adequate by plant tests as specified in Section 9 andapproved by the owner.The surface on the spigot or tongueshall be modified to properly position and seat the gasket.6.1.5 The space betwee