ASTM_D_7033_-_14.pdf

Designation:D703314Standard Practice forEstablishing Design Capacities for Oriented Strand Board(OSB)Wood-Based Structural-Use Panels1This standard is issued under the fixed designation D7033;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.INTRODUCTIONOriented strand board(OSB)wood-based structural-use panels have been used in a variety ofapplications since the 1970s.OSB panels manufactured for use in North America generally complywith U.S.Department of Commerce Standard PS-2.Panels that comply with PS-2 are subjected tovarious kinds of qualification performance testing and ongoing quality assurance testing.While manypanel applications are specified simply on the basis of meeting a given“span rating”as defined inPS-2,some construction and specialty applications may require a complete set of engineering designvalues.Based on the structural tests required by PS-2(flexure),along with data for other properties,a set of baseline capacities has been available since 1988.As is customary for structural-use panels,design values will be discussed in this practice in terms of design capacities rather than designproperties,where the difference is that a design property is expressed in units of stress(that is,pounds-per-square inch)and a design capacity is expressed in the engineering units of strength(thatis,inch-pounds of bending strength capacity,pounds of tensile capacity,and so forth).The term“design values”will be used generically and can apply to either properties or capacities.As uses for OSB wood-based structural-use panels extend into new applications,it becomesincreasingly important that manufacturers,qualified agencies,and regulatory bodies reference a set ofcommon,consensus-based procedures for establishment of design values.The purpose of this practiceis to provide these common procedures.1.Scope1.1 This practice covers the basis for code recognition ofdesign capacities for OSB structural-use panels.Procedures areprovided to establish or re-evaluate design capacities for OSBstructural-use panels.Procedures for sampling and testing arealso provided.Design values stated as capacity per unitdimension are to be regarded as standard.Design capacitiesdeveloped in accordance with this practice are applicable topanels intended for use in dry in-service conditions.NOTE1This practice is based on ICC-ES Acceptance CriteriaAC-182.Relative to the scope of AC-182,this practice is limited to OSBpanels.NOTE2While this practice makes reference to PS-2,this practiceapplies similarly to products certified to other standards such as CAN/CSA O325.NOTE3OSB produced under PS-2 is rated with the“Exposure 1”bond classification.Exposure 1 panels covered by PS-2 are intended fordry use applications where the in-service equilibrium moisture contentconditions are expected to be less than 16%.Exposure 1 panels areintended to resist the effects of moisture due to construction delays,orother conditions of similar severity.Guidelines on use of OSB areavailable from manufacturers and qualified agencies.NOTE4PS-2-10 replaced the use of nominal thicknesses with aclassification term known as Performance Category,which is defined inPS-2 as“A panel designation related to the panel thickness range that islinked to the nominal panel thickness designations used in the Interna-tional Building Code(IBC)and International Residential Code(IRC).”Therefore,the PS-2 Performance Category should be considered equiva-lent to the term“nominal thickness”used within this standard.2.Referenced Documents2.1 ASTM Standards:2D9 Terminology Relating to Wood and Wood-Based Prod-uctsD143 Test Methods for Small Clear Specimens of TimberD1037 Test Methods for Evaluating Properties of Wood-Base Fiber and Particle Panel MaterialsD1761 Test Methods for Mechanical Fasteners in Wood1This practice is under the jurisdiction of ASTM Committee D07 on Wood andis the direct responsibility of Subcommittee D07.03 on Panel Products.Current edition approved May 1,2014.Published May 2014.Originallyapproved in 2005.Last previous edition approved in 2007 as D7033 07.DOI:10.1520/D7033-14.2For 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 D1990 Practice for Establishing Allowable Properties forVisually-Graded Dimension Lumber from In-Grade Testsof Full-Size SpecimensD2555 Practice for Establishing Clear Wood Strength ValuesD2718 Test Methods for Structural Panels in Planar Shear(Rolling Shear)D2719 Test Methods for Structural Panels in Shear Through-the-Thickne