2001 ASD Supplements - unprotected PDF - American Wood Council

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PP-8DESIGN ADJUSTMENT FACTORSincreases as the critical section becomes further from thetip. Critical section factors, C cs , are independent of taperedcolumn provisions in Section 3.7.2 of NDS and bothshall be permitted to be used in design calculations.3.2.9 Bearing Area Factor, C bTabulated compression design values perpendicularto grain, F c⊥ , for timber poles and piles shall be permittedto be multiplied by the bearing area factor, C b , specifiedin NDS section 2.3.10. Table 3.7 provides bearingarea factors for the indicated bearing length on such smallareas as plates and washers.3.2.10 Wet Service Factor, C MTabulated design values apply to wet or dry serviceconditions.Table 3.2 Frequently Used Load Duration Factors, C D1Load Duration C D Typical Design LoadsPermanent 0.9 Dead LoadTen years 1.0 Occupancy Live LoadTwo months 1.15 Snow LoadSeven days 1.25 Construction LoadTen minutes 1.6 Wind/Earthquake LoadImpact 2 2.0 Impact Load1.Load duration factors shall not apply to modulus of elasticity, E, nor to compression perpendicular to grain design values, F c⊥ , based on a deformation limit.2.Load duration factors greater than 1.6 shall not apply to structural members pressure-treated with water-borne preservatives or fire retardant chemicals. Theimpact load duration factor shall not apply to connections.Table 3.3Temperature Effect Factor, C t, for Poles and Piles Exposed toSustained Elevated TemperaturesDesign ValuesEOther Propertiesand ConnectionsIn ServiceMoisture ConditionC t100
<strong>ASD</strong> TIMBER POLES AND PILES SUPPLEMENTPP-9Table 3.5Single Pile Factors, C sp, for Round Timber PilesReferenceResistancePileClusterC spSingle PileF b 1.0 0.77F c 1.0 0.803Table 3.6Table 3.7Compression Parallel to Grain Critical Section Modification Factor,C cs, for Poles and PilesSpeciesPacific Coast Douglas-Fir, Southern PineC csPile Cluste r1 + 0.002L, where L = length (ft.) from tip tocriticalsection. Note C shall not exceed 1.10OtherSpecies1. 0c s.Bearing Area Factors, C b, for Poles and PilesDESIGN ADJUSTMENT FACTORS b 0.5" 1" 1.5" 2" 3" 4" 6" or moreC b 1.75 1.38 1.25 1.19 1.13 1.10 1.00AMERICAN FOREST & PAPER 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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Page 135 and 136: GL-56OTHER CONSIDERATIONS6.1 Genera
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Page 141 and 142: GL-62LOAD AND SPAN TABLES7.1 Genera
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Page 145 and 146: GL-66LOAD AND SPAN TABLESTable 7.2A
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Page 157 and 158: GL-78DESIGN EXAMPLES8.1 GeneralGene
Page 159 and 160: GL-80SECTION PROPERTIES9.1 Cross Se
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Page 173 and 174: SUPPLEMENTTimber Polesand PilesASDA
Page 175 and 176: ASD WOOD TIMBER FRAME POLES CONSTRU
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Page 179 and 180: ASD TIMBER POLES AND PILES SUPPLEME
Page 185: ASD TIMBER POLES AND PILES SUPPLEME
Page 211 and 212: SUPPLEMENTWood StructuralPanelsASDA
Page 213 and 214: ASD WOOD STRUCTURAL PANELS SUPPLEME
Page 219 and 220: SP-2DESIGNER FLOWCHART1.1 Flowchart
Page 221 and 222: SP-4INTRODUCTION TO WOOD STRUCTURAL
Page 227 and 228: SP-10DESIGN CAPACITIES3.1 GeneralPa
Page 229 and 230: SP-12DESIGN CAPACITIESShear Through
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SP-20DESIGN ADJUSTMENT FACTORS4.1 G
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SP-22DESIGN ADJUSTMENT FACTORS4.8 P
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SP-24SECTION PROPERTIES5.1 GeneralS
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SP-26OTHER CONSIDERATIONS6.1 Fasten
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SP-28OTHER CONSIDERATIONS• Volunt
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SP-30SUPPLEMENTAL DESIGN ASSISTANCE
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SUPPLEMENTWood StructuralPanel Shea
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ASD WOOD STRUCTURAL WOOD PANEL FRAM
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ASD WOOD STRUCTURAL WOOD PANEL FRAM
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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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