ASTM_D_5652_-_95_2013.pdf

Designation:D565295(Reapproved 2013)Standard Test Methods forBolted Connections in Wood and Wood-Based Products1This standard is issued under the fixed designation D5652;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 These test methods cover procedures for evaluating thestrength and stiffness of single-bolted connections in wood orwood-based products when subjected to static loading.Thesetest methods serve as a basis for determining the effects ofvarious factors on the strength and stiffness of the connection.1.2 The values stated in inch-pound units are to be regardedas the standard.The SI units in parentheses are for informationonly.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 the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D2395 Test Methods for Specific Gravity of Wood andWood-Based MaterialsD2915 Practice for Sampling and Data-Analysis for Struc-tural Wood and Wood-Based ProductsD4442 Test Methods for Direct Moisture Content Measure-ment of Wood and Wood-Base MaterialsE4 Practices for Force Verification of Testing MachinesF606 Test Methods for Determining the Mechanical Proper-ties of Externally and Internally Threaded Fasteners,Washers,Direct Tension Indicators,and Rivets2.2 Federal Specification:3Fed.Spec.FF-W-92 for Washers,Metal,Flat(Plain)3.Summary of Test Methods3.1 Specimens consisting of at least one wood or wood-based member fastened with one bolt to at least one othermember of any material are evaluated for capacity to resistcompressive or tensile forces applied at a constant rate ofdeformation with a suitable testing machine.The deformationof the connection at various intervals of loading is measured.Supplementary physical properties of the wood or wood-basedmembers are also determined.4.Significance and Use4.1 Connections are one of the weakest links in woodconstruction.While the strength of metal bolts and of wood orwood-based products are ascertainable,a full evaluation of theperformance of the combination is only possible through thetesting of a complete connection.Such variables as memberthickness,member width,end and edge distances,type of bolt,fabrication tolerances,moisture content of the wood or wood-based product,preservative or fire-retardant treatment of thewood or wood-based product,and species of wood may affectconnection behavior.In order to develop design criteria forestablished bolt types as well as those under development,theeffect of these variables on connection strength and stiffnessmust be known.The tests described herein permit the obser-vation of data on the strength and stiffness of wood orwood-based connections,or both,under the influence of any orall of these factors.5.Apparatus5.1 Testing MachineAny suitable testing machine capableof operation at a constant rate of motion of its movable headand having an accuracy of 61%when calibrated in accor-dance with Practices E4.5.2 Spherical Bearing Block,for compressive loading ofspecimens.5.3 GripsGripping devices capable of attaching the speci-men to the stationary and moving heads of the testing machinein such a way as to ensure true axial tensile loads.5.4 Deformation GagesAt least two dial gages with a leastreading of 0.001 in.(0.025 mm)or other suitable devices formeasuring the slip between connection members during loadapplication.6.Sampling6.1 Sampling shall provide for selection of representativetest specimens that are appropriate to the objectives of thetesting program.1These test methods are under the jurisdiction of ASTM Committee D07 onWood and are the direct responsibility of Subcommittee D07.05 on Wood Assem-blies.Current edition approved April 1,2013.Published April 2013.Originallyapproved in 1995.Last previous edition approved in 2007 as D5652 95(2007).DOI:10.1520/D5652-95R13.2For 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 Superintendent of Documents,U.S.Government PrintingOffice,Washington,DC 20402.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 6.2 Estimate sample size in accordance with the proceduresof Method D2915.NOTE1The precision required,and thus,the manner of sampling andthe number of tests,depend upon the specific test objectives.No specificcriteria can therefore be established.General experience indicates that thecoefficients of variation from tests on conne