1996 LRFD Supplements - unprotected PDF - American Wood Council

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SUPPLEMENTStructural LumberLRFDLOAD AND RESISTANCE FACTOR DESIGNMANUAL FOR ENGINEEREDWOOD CONSTRUCTIONCopyright © 1996 by Canadian Wood Council, Southern Forest Products Association, Southern PineInspection Bureau, West Coast Lumber Inspection Bureau, and Western Wood Products Association.
PrefaceThis supplement contains adjustment factors, dimensions,factored resistances, reference strengths and otherproperties required to design structural lumber in the LRFDformat. In this format, the term resistance is used to referto member capacities (i.e., moment resistance, compressionresistance, etc.). This is distinct from the term strengthwhich refers to limit state material properties — conceptuallya “factored allowable stress.”The member resistance values tabulated in this supplementare to be used in conjunction with the designmethodologies provided in AF&PA/ASCE 16-95, Standardfor Load and Resistance Factor Design (LRFD) forEngineered Wood Construction.The reference strengths were derived according toASTM D5457-93, Standard Specification for Computingthe Reference Resistance of Wood-Based Materials andStructural Connections for Load and Resistance FactorDesign.The tabulated reference strength values are to be usedwithin the reference end-use conditions defined therein.When the end-use conditions fall outside the range of thereference conditions, the reference values shall be adjustedby the product of applicable adjustment factors as definedin AF&PA/ASCE 16-95 and also provided in this supplement.For unusual end-use conditions, the designer shouldconsult additional literature for possible further adjustments.The development and future maintenance of thissupplement is a cooperative effort between AF&PA andthe lumber industry. The lumber organizations involvedin the development and review are as follows:Canadian Wood CouncilSouthern Forest Products AssociationSouthern Pine Inspection BureauWest Coast Lumber Inspection BureauWestern Wood Products AssociationEvery effort has been made to ensure the accuracy ofthe information presented. Member selection tables areprovided for materials widely used in wood construction.The purpose of this supplement is to provide convenientreference and design aids to design professionals.Many individuals have contributed to the developmentof this first edition, including Linda Brown, SPIB; KevinCheung, WWPA; Don DeVisser, WCLIB; Dave Gromala,Gromala & Associates, Eric Jones and Jean-FrancoisHoude, CWC, and Cathy Marx, SFPA.Suggestions for improvement of this supplement arewelcomed and will be considered for future editions. Allsuggestions and comments should be directed to AF&PAor one of the organizations listed above.
Page 1: SUPPLEMENTStructural LumberLRFDLOAD
Page 7 and 8: 2 DESIGNER FLOWCHART1.1 FlowchartSt
Page 9 and 10: 4 INTRODUCTION TO STRUCTURAL LUMBER
Page 11 and 12: 6 REFERENCE STRENGTHS3.1 GeneralThe
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Page 35 and 36: 30REFERENCE STRENGTHS
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Page 39 and 40: 34 DESIGN ADJUSTMENT FACTORSandFgN
Page 41 and 42: 36 DESIGN ADJUSTMENT FACTORSTable 4
Page 43 and 44: 38 MEMBER SELECTION TABLES5.1 Gener
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48 MEMBER SELECTION TABLESTable 5.6
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50MEMBER SELECTION TABLES
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52 OTHER CONSIDERATIONS6.1 GeneralW
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54OTHER CONSIDERATIONS
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56 SPAN TABLES7.1 Explanation of Ta
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58 SPAN TABLESTable 7.2 Floor Joist
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60 SPAN TABLESTable 7.4 Ceiling Joi
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62 SPAN TABLESTable 7.6 Rafters 30/
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64 SPAN TABLESTable 7.8 Rafters 20/
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66SPAN TABLES
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68 SECTION PROPERTIES8.1 Cross-Sect
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70CROSS-SECTION PROPERTIES
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72 APPENDIXAppendix: Example of Sel
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74 APPENDIXV u= shear force due to
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76APPENDIX
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SUPPLEMENTStructural GluedLaminated
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TABLE OF CONTENTSChapter/Title Page
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LRFD STRUCTURAL GLUED LAMINATED TIM
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LRFDGUIDELINESTRUCTURALTO LRFDGLUED
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SUPPLEMENTTimber Polesand PilesLRFD
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AMERICAN WOOD COUNCIL
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2 DESIGNER FLOWCHART1.1 FlowchartTi
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4 INTRODUCTION TO TIMBER POLES AND
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6 DESIGN ADJUSTMENT FACTORS3.1 Gene
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8 DESIGN ADJUSTMENT FACTORSTable 3.
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10 REFERENCE STRENGTHS4.1 GeneralTh
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12REFERENCE STRENGTHSAMERICAN WOOD
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14 POLE AND PILE SELECTION TABLES5.
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16 POLE AND PILE SELECTION TABLESTa
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18 POLE AND PILE SELECTION TABLESTa
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20POLE AND PILE SELECTION TABLESAME
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24OTHER CONSIDERATIONSAMERICAN WOOD
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26 SECTION PROPERTIES7.1 SECTION PR
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28 SECTION PROPERTIESTable 7.4Speci
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30 SECTION PROPERTIESAMERICAN WOOD
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SUPPLEMENTStructural-UsePanelsLRFDL
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TABLE OF CONTENTSChapter/TitlePage4
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LRFD STRUCTURAL-USE PANELS SUPPLEME
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GUIDELINELRFD STRUCTURAL-USETO LRFD
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SUPPLEMENTStructuralConnectionsLRFD
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8.3D Factored Resistance Values (φ
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2 DESIGNER FLOWCHART1.1 FlowchartSt
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4 INTRODUCTION TO STRUCTURAL CONNEC
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6 DESIGN ADJUSTMENT FACTORS3.1 Gene
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8 DESIGN ADJUSTMENT FACTORSTable 3.
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10 DESIGN ADJUSTMENT FACTORSTable 3
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12 DESIGN ADJUSTMENT FACTORSTable 3
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14 FACTORED RESISTANCE VALUES4.1 Ge
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16 FACTORED RESISTANCE VALUESAMERIC
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18 FACTORED RESISTANCE VALUESTable
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62FACTORED RESISTANCE VALUESAMERICA
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66 FASTENER DIMENSIONS6.1 Typical D
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68 APPENDIXSimplified Design Equati
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70 APPENDIXLimitations for Simplifi
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72 APPENDIXWood Screw ConnectionsLi
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74APPENDIXAMERICAN WOOD COUNCIL
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1996 LRFD Supplements - unprotected PDF - American Wood Council

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