ASTM_F_432_-_13.pdf

Designation:F43213Standard Specification forRoof and Rock Bolts and Accessories1This standard is issued under the fixed designation F432;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification covers the chemical,mechanical,anddimensional requirements for roof and rock bolts and accesso-ries.Addressed in this specification are double-end threadedand slotted steel bars;fully grouted bolts and threaded bars;mechanical anchorage devices used for point anchorage appli-cations;roof truss systems;partially grouted deformed bolts;formable anchorage devices;cable bolt systems;expandablerock bolts and other frictional anchorage devices.All of theseproducts represent various designs used for ground supportsystems.This specification can be revised to address newtechnologies.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 hazard statement applies only to Section 10,TestMethods of this specification.This standard does not purportto address the safety concerns,if any,associated with its use.It is the responsibility of the user of this standard to establishappropriate safety and health practices and determine theapplicability of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2A29/A29M Specification for General Requirements for SteelBars,Carbon and Alloy,Hot-WroughtA47/A47M Specification for Ferritic Malleable Iron Cast-ingsA194/A194M Specification for Carbon andAlloy Steel Nutsfor Bolts for High Pressure or High Temperature Service,or BothA220/A220M Specification for Pearlitic Malleable IronA370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA416/A416M Specification for Steel Strand,UncoatedSeven-Wire for Prestressed ConcreteA536 Specification for Ductile Iron CastingsA563 Specification for Carbon and Alloy Steel NutsA615/A615M Specification for Deformed and Plain Carbon-Steel Bars for Concrete ReinforcementA882/A882M Specification for Filled Epoxy-Coated Seven-Wire Prestressing Steel StrandA1011/A1011M Specification for Steel,Sheet and Strip,Hot-Rolled,Carbon,Structural,High-Strength Low-Alloy,High-StrengthLow-AlloywithImprovedFormability,and Ultra-High StrengthA751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel ProductsD6637 Test Method for Determining Tensile Properties ofGeogrids by the Single or Multi-Rib Tensile MethodD1248 Specification for Polyethylene Plastics ExtrusionMaterials for Wire and CableF436 Specification for Hardened Steel WashersF606 Test Methods for Determining the Mechanical Proper-ties of Externally and Internally Threaded Fasteners,Washers,Direct Tension Indicators,and Rivets2.2 ASME Standards:3B 1.1 Unified Screw ThreadsB 1.3M Screw Thread Gaging Systems for DimensionalAcceptabilityInch and Metric Screw ThreadsB 18.2.2 Square and Hex Nuts3.Terminology3.1 Definitions:3.1.1 barrela device housing normally either 2 or 3 piececable strand wedges3.1.2 bearing plates,plate washers,mine roof platesplates that serve to distribute the load from the exposed end ofthe bolt or threaded bar to the rock face or intermediatemember.3.1.2.1 header plateslarge rectangular bearing plates,usu-ally 6 in.wide by 16 to 18 in.long,or any other shape with anequivalent area,used in substitution for wooden header blocks1This specification is under the jurisdiction of ASTM Committee F16 onFasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts,Nuts,Rivets and Washers.Current edition approved May 1,2013.Published July 2013.Originally approvedin 1975.Last previous edition approved in 2010 as F432 10.DOI:10.1520/F0432-13.2For 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.3Available from American Society of Mechanical Engineers(ASME),ASMEInternational Headquarters,Three Park Ave.,New York,NY 10016-5990,http:/www.asme.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 States1 for wider distribution of the bolt load than is possible withstandard bearing plates.3.1.3 bendable boltsbolts furnished with an altered sec-tion at some location,to be specified by the customer,at whichthe bar will bend.3.1.3.1 DiscussionBending is necessary to permit instal-lation of bars longer than the mine opening height.This alteredsection may be produced by hot or cold forging,or by shearing,sawing,trimming,machining,grinding,or a combination ofthese processes.3.1.4 beveled washerswashers whose faces are