مقررات طراحی ویژه 2008 برای استاندارد باد و زلزله

Wind & Seismic Cover......Page 1 Wind & Seismic......Page 3 Copyright......Page 4 List of Tables......Page 5 List of Commentary Figures......Page 6 1 Designer Flowchart......Page 7 1.1 Flowchart......Page 8 2 General Design Requirements......Page 9 2.2 Terminology......Page 10 2.3 Notation......Page 12 3 Members and Conections......Page 13 3.2.1 Wall Sheathing......Page 14 Table 3.2.1 Nominal Uniform Load Capacities ( psf) for Wall Sheathing Resisting Out-of-Plane Wind Loads1......Page 15 3.3 Connections......Page 16 4 Lateral Force-Resisting systems......Page 17 4.1.5 Wood Members and Systems Resisting Seismic Forces Contributed by Masonry and Concrete Walls......Page 18 4.2.3 Unit Shear Capacities......Page 19 Figure 4A Open Front Structure......Page 20 4.2.7 Diaphragm Assemblies......Page 21 Figure 4C High Load Diaphragm......Page 23 Table 4.2A Nominal Unit Shear Capacities for Wood- Frame Diaphragms - Blocked Wood Structural Panel Diaphragms......Page 24 Table 4.2B Nominal Unit Shear Capacities for Wood- Frame Diaphragms - Blocked Wood Structural Panel Diaphragms Utilizing Multiple Rows of Fasteners ( High Load Diaphragms)......Page 25 Table 4.2C Nominal Unit Shear Capacities for Wood- Frame Diaphragms - Unblocked Wood Structural Panel Diaphragms......Page 26 Table 4.2D Nominal Unit Shear Capacities for Wood- Frame Diaphragms - Lumber Diaphragms......Page 27 4.3.3 Unit Shear Capacities......Page 28 Table 4.3.3.2 Unblocked Shear Wall Adjustment Factor, Cub......Page 29 4.3.4 Shear Wall Aspect Ratios......Page 30 Figure 4D Typical Shear Wall Height- to- Width Ratio for Perforated Shear Walls......Page 31 Figure 4F Typical Shear Wall Height- to- Width Ratio for Shear Walls Designed for Force Transfer Around Openings......Page 32 4.3.6 Construction Requirements......Page 33 4.3.7 Shear Wall Systems......Page 34 Table 4.3A Nominal Unit Shear Capacities for Wood- Frame Shear Walls - Wood- based Panels......Page 37 Table 4.3B Nominal Unit Shear Capacities for Wood- Frame Shear Walls - Wood Structural Panels Applied over 1/ 2" or 5/ 8" Gypsum Wallboard or Gypsum Sheathing Board......Page 38 Table 4.3C Nominal Unit Shear Capacities for Wood- Frame Shear Walls - Gypsum and Portland Cement Plaster......Page 39 Table 4.3D Nominal Unit Shear Capacities for Wood- Frame Shear Walls - Lumber Shear Walls......Page 40 4.4.1 Application......Page 41 Figure 4G Panel Attachment......Page 42 Figure 4I Panel Splice Occurring across Studs......Page 43 Figure 4J Sheathing Splice Plate ( Alternate Detail)......Page 44 Table 4.4.2 Nominal Uplift Capacity of 3/ 8" Minimum Wood Structural Panel Sheathing or Siding When Used for Wind Uplift Only over Framing with a Specific Gravity of 0.42 or Greater......Page 45 Appendix A......Page 47 Table A2 Standard Cut Washers......Page 48 References......Page 49 References......Page 50 SDPWS Commentary......Page 51 Foreword......Page 52 C2.2 Terminology......Page 53 C3.2 Sheathing......Page 55 Table C3.2C Cellulosic Fiberboard Sheathing Design Bending Strength Capacities......Page 56 EXAMPLE C3.2.1-1 Determine the Nominal Uniform Load Capacity in SDPWS Table 3.2.1......Page 57 C3.3 Connections......Page 58 C4.1 General......Page 59 C4.2.2 Deflection......Page 60 Table C4.2.2B Shear Stiffness, Gvtv ( lb/in. of depth), for Other Sheathing Materials......Page 61 EXAMPLE C4.2.2-2 Derive Ga in SDPWS Table 4.2B......Page 62 Table C4.2.2D Fastener Slip, en ( in.)......Page 63 C4.2.3 Unit Shear Capacities......Page 64 Figure C4.2.2-3b Diaphragm Chord, Double Top Plate with Two Joints in Upper Plate......Page 65 EXAMPLE C4.2.2-3 Calculate Mid-Span Diaphragm Deflection ( continued)......Page 66 C4.2.5 Horizontal Distribution ofShear......Page 67 C4.2.7 Diaphragm Assemblies......Page 68 Figure C4.2.7.1.1( 3) Staggering of Nails at Panel Edges of Blocked Diaphragms......Page 69 C4.3.2 Deflection......Page 70 Figure C4.3.2 Comparison of 4-Term and 3-Term Deflection Equations......Page 71 Table C4.3.2A Data Summary for Structural Fiberboard, Gypsum Wallboard, and Lumber Sheathed Shear Walls......Page 72 EXAMPLE C4.3.2-1 Calculate the Apparent Shear Stiffness, Ga, in SDPWS Table 4.3A......Page 73 C4.3.3 Unit Shear Capacities......Page 74 C4.3.4 Shear Wall Aspect Ratios......Page 75 C4.3.6 Construction Requirements......Page 76 Figure C4.3.6.4.3 Distance for Plate Washer Edge to Sheathed Edge......Page 77 C4.3.7 Shear Wall Systems......Page 78 C4.4.1 Application......Page 79 C4.4.2 Wood Structural PanelsDesigned to Resist Only Upliftfrom Wind......Page 80 EXAMPLE C4.4.1-1 Calculate Nominal Uplift Capacity for Combined Uplift and Shear Case......Page 81 EXAMPLE C4.4.2-1 Calculate Nominal Uplift Capacity for Wind Uplift Only Case......Page 82 Commentary References......Page 83 Back Cover......Page 87