2001 ASD Supplements - unprotected PDF - American Wood Council

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ASD WOOD STRUCTURAL PANELS SUPPLEMENTSP-29SUPPLEMENTALDESIGNASSISTANCE7.1 Uniform Loads for WoodStructural PanelsSP-307.2 Load-Span Tables SP-317.3 Design Examples SP-367Table 7.1 Uniform Load (psf) on Sheathing .................. SP-32Table 7.2 Uniform Load (psf) on Single Floor ............... SP-33Table 7.3 Uniform Load (psf) on Group 1 SandedPanels ................................................................ SP-34Table 7.4 Adjustments to Allowable Load CapacitiesBased on Panel Grade andConstruction, C G .............................................. SP-35Table 7.5 Application Adjustment Factors .................... SP-36APA – The Engineered Wood Association
SP-30SUPPLEMENTAL DESIGN ASSISTANCE7.1 Uniform Loads for Wood Structural PanelsComputation of uniform-load capacity of wood structuralpanels shall be as outlined in this section for suchapplications as roofs, floors, and walls. The design capacitiesare subject to adjustment as specified in Section 4.Three basic span conditions are presented for computinguniform-load capacities of wood structural panels.For normal framing practice and a standard panel size(4x8 ft.), the following assumptions are used in computingrecommendations for load-span tables. When the panelstrength axis is perpendicular to the supports, the threespancondition is assumed for support spacing up to andincluding 32 inches. The two-span condition is assumedfor support spacing greater than 32 inches.When the panel strength axis is placed parallel to thesupports, the three-span condition is assumed for supportsspacing up to and including 16 inches, the two-span conditionis assumed when the support spacing is greater than16 inches up to 24 inches, and a single-span condition isassumed for spans greater than 24 inches.Two-inch-nominal framing is assumed for supportspacing less than 48 inches. Four-inch-nominal framingis assumed for support spacing of 48 inches or greater.The equations presented in this section are standardbeam formulas altered to accept the mixed units noted.These formulas are provided for computing uniform loadson wood structural panels over conventional framing. Becauseit is assumed that no blocking is used, the formulasare for one-way “beam” action, rather than two-way“plate” action. The resulting loads are assumed to be appliedto full-sized panels in standard sheathing-typeapplications. Loads are for the panels only, and in no wayaccount for the design of the framing supports.Further consideration should be given to concentratedloads, in compliance with local building codes and withmaximum span recommendations.Uniform Loads Based on BendingStrengthThe following formulas shall be used for computingloads based on design bending strength capacity (F bS).For a single span:wb96FbS=l 12For a two-span condition:wb96FbS=l 12For a three-span condition:where:120FbSwb=2l 1w b= uniform load based on bending strength (psf)F bS = design bending strength capacity (lb-in./ft.)l 1= span (in., center-to-center of supports)Uniform Loads Based on ShearStrengthThe following formulas shall be used for computingloads based on design shear strength capacity (F s[Ib/Q]).For a single span:w s = 24 Fs Ib/Ql2For a two-span condition:w s = 19 . 2 Fs Ib/Ql2For a three-span condition:w s = 20 Fs Ib/Ql21 11 1 1ccchhhAPA – The Engineered Wood Association
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SUPPLEMENTStructural LumberASDALLOW
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SUPPLEMENTStructural LumberASDALLOW
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ASD WOOD STRUCTURAL FRAME CONSTRUCT
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ASD STRUCTURAL LUMBER SUPPLEMENTL-1
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SUPPLEMENTStructural GluedLaminated
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ASD STRUCTURAL GLUED LAMINATED TIMB
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ASD STRUCTURAL GLUED LAMINATED TIMB
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GL-2DESIGNER FLOWCHART1.1 Flowchart
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GL-4INTRODUCTION TO STRUCTURAL GLUE
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GL-6INTRODUCTION TO STRUCTURAL GLUE
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GL-8ALLOWABLE STRESS AND STIFFNESS3
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GL-10ALLOWABLE STRESS AND STIFFNESS
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GL-12ALLOWABLE STRESS AND STIFFNESS
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GL-14DESIGN ADJUSTMENT FACTORS4.1 G
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GL-16DESIGN ADJUSTMENT FACTORS4.9 V
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GL-18DESIGN ADJUSTMENT FACTORSTable
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GL-30CAPACITY SELECTION TABLES5.1 G
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GL-32CAPACITY SELECTION TABLESTable
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GL-56OTHER CONSIDERATIONS6.1 Genera
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GL-58OTHER CONSIDERATIONSTable 6.3
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GL-60OTHER CONSIDERATIONSAMERICAN W
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GL-62LOAD AND SPAN TABLES7.1 Genera
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GL-64LOAD AND SPAN TABLES7.2 Load-S
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GL-66LOAD AND SPAN TABLESTable 7.2A
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GL-76LOAD AND SPAN TABLESAMERICAN W
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GL-78DESIGN EXAMPLES8.1 GeneralGene
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GL-80SECTION PROPERTIES9.1 Cross Se
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GL-82SECTION PROPERTIESTable 9.1(Co
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SUPPLEMENTTimber Polesand PilesASDA
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ASD WOOD TIMBER FRAME POLES CONSTRU
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ASD WOOD TIMBER FRAME POLES CONSTRU
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ASD TIMBER POLES AND PILES SUPPLEME
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Page 195 and 196: ASD TIMBER POLES AND PILES SUPPLEME
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ASD WOOD STRUCTURAL PANEL SHEAR WAL
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ASD WOOD STRUCTURAL PANEL SHEAR WAL
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2001 ASD Supplements - unprotected PDF - American Wood Council

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