1、Designation: D7033 07D7033 14Standard 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 t
2、he 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 vari
3、ety 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
4、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
5、 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
6、-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 wo
7、od-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
8、procedures.1. Scope1.1 This practice covers the basis for code recognition of design capacities for OSB structural-use panels. Procedures areprovided to establish or re-evaluate design capacities for OSB structural-use panels. Procedures for sampling and testing are alsoprovided. Design values state
9、d as capacity per unit dimension are to be regarded as standard. Design capacities developed inaccordance with this practice are applicable to panels intended for use in dry in-service conditions.NOTE 1This practice is based on ICC-ES Acceptance Criteria AC-182. Relative to the scope of AC-182, this
10、 practice is limited to OSB panels.NOTE 2While this practice makes reference to PS-2, this practice applies similarly to products certified to other standards such as CAN/CSA O325.NOTE 3OSB produced under PS-2 is rated with the “Exposure 1” bond classification. Exposure 1 panels covered by PS-2 are
11、intended for dry useapplications where the in-service equilibrium moisture content conditions are expected to be less than 16 %. Exposure 1 panels are intended to resist theeffects of moisture due to construction delays, or other conditions of similar severity. Guidelines on use of OSB are available
12、 from manufacturers andqualified agencies.NOTE 4PS-2-10 replaced the use of nominal thicknesses with a classification term known as Performance Category, which is defined in PS-2 as “Apanel designation related to the panel thickness range that is linked to the nominal panel thickness designations us
13、ed in the International Building Code(IBC) and International Residential Code (IRC).” Therefore, the PS-2 Performance Category should be considered equivalent to the term “nominalthickness” used within this standard.2. Referenced Documents2.1 ASTM Standards:2D9 Terminology Relating to Wood and Wood-
14、Based Products1 This practice is under the jurisdiction of ASTM Committee D07 on Wood and is the direct responsibility of Subcommittee D07.03 on Panel Products.Current edition approved April 15, 2007May 1, 2014. Published May 2007May 2014. Originally approved in 2005. Last previous edition approved
15、in 20052007 asD7033 05.D7033 07. DOI: 10.1520/D7033-07.10.1520/D7033-14.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the AS
16、TM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consul
17、t prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1D143 Test Methods for Small Clear Spe
18、cimens of TimberD1037 Test Methods for Evaluating Properties of Wood-Base Fiber and Particle Panel MaterialsD1761 Test Methods for Mechanical Fasteners in WoodD1990 Practice for EstablishingAllowable Properties for Visually-Graded Dimension Lumber from In-Grade Tests of Full-SizeSpecimensD2555 Pract
19、ice 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-ThicknessD2915 Practice for Sampling and Data-Analysis for Structural Wood and Wood-Based ProductsD3043 Test Methods fo
20、r Structural Panels in FlexureD3500 Test Methods for Structural Panels in TensionD3501 Test Methods for Wood-Based Structural Panels in CompressionD4442 Test Methods for Direct Moisture Content Measurement of Wood and Wood-Base MaterialsD4933 Guide for Moisture Conditioning of Wood and Wood-Based Ma
21、terialsD5456 Specification for Evaluation of Structural Composite Lumber ProductsD5457 Specification for Computing Reference Resistance of Wood-Based Materials and Structural Connections for Load andResistance Factor DesignD5764 Test Method for Evaluating Dowel-Bearing Strength of Wood and Wood-Base
22、d ProductsD6815 Specification for Evaluation of Duration of Load and Creep Effects of Wood and Wood-Based ProductsE4 Practices for Force Verification of Testing Machines2.2 Other Documents:PS-2 Performance Standard for Wood-Based Structural-Use Panels, U.S. Department of Commerce Voluntary Product S
23、tandard3NDS ANSI/AF or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).TABLE X2.1 Adjustment of Test Capacity to NormalizedCapacityBending Strength CapacityFbS(lbf-in./ft)TestThickness(in.)Apparen
24、tProperty,Fb(psi)DesignThickness(in.)NormalizedCapacityA(lbf-in./ft)2684 0.688 2835 0.685 26612684 0.682 2885 0.685 2708A Normalized capacities determined on the basis of apparent properties.D7033 1410TABLE X2.2 Adjustment of Test Capacity to NormalizedCapacityPlanar Shear CapacityFs(IB/Q)(lbf/ft)Te
25、stThickness(in.)ApparentProperty,Fs(psi)DesignThickness(in.)NormalizedCapacityA(lbf/ft)877 0.688 159 0.685 873877 0.682 161 0.685 881A Normalized capacities determined on the basis of apparent properties.TABLE X2.3 Adjustment of Test Capacity to NormalizedCapacityBending StiffnessEI(lbf-in.2/ft)TestThickness(in.)ApparentProperty,MOE(psi)DesignThickness(in.)NormalizedCapacityA(lbf-in.2/ft)311 730 0.688 957 223 0.685 307 670311 730 0.682 982 710 0.685 315 862A Normalized capacities determined on the basis of apparent properties.D7033 1411
