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Table 4.3A Nominal Unit Shear Capacities for Wood-Frame Shear Wallsl,3,6,7 Wood-based Panels4 Sheathing Material A B Minimun .SEISMIC 3 WIND .;1 Minimum Fastener Panel Edge FastenerNominal Penetration Fastener Panel Edge Fastener Spacing (in.) Panel in Framing Type & Size Spacing (in.) 6 4 3 2 6432Thickness Member or (in.) Vs Ga vs Ga vs Ga Vs Ga Vw Vw Vw VwBlocking (in.)(PIf)(kips/in.)(pIf)(kips/in.)(PIf)(kips/in.)(pIf)(kips/in.)(PIf)(pIf)(Plf}(pIf) Nail (common or galvanized box) Wood 7 5/16 1-1/4 6dStructural \3/82 Panels -7/162 1-3/8 8d, Structural ,4.5 i -.- ._-t 1 5/32 e' - -- -Fb/32 1-1/2 10d 2 5/16 .--1-1/4 6d 3/8 Wood 3/8 Structural 7/162 1-3/8 8dPanels - Sheathing 4,5 15/32 15/32 1-1/2 10d 19/32 OSB PLY OSB PLY OSB PLY OSB PLY 400 13 10 600 18 13 780 23 16 1020 35 22 560 840 1090 1430 460 19 14 720 24 17 920 30 20 1220 43 24 645 1010 1290 1710 510 16 13 790 21 16 1010 27 19 1340 40 24 715 1105 1415 1875 560, 14 11 0 18 14 1100 24 . 17 1360 37 23 · 785 1295 1540 2045 680 22 16 8020_3· 29 20 1330 36 22 0740) 51 28 950 /14303 1860 2435 3604' 13 9.5 540 18 12 700 24 14 900 37 18 505 755 980 1260 400 +11 8.5 600 15 11 780 20 13 1020 32 17 560 840 1090 1430 440 17 12 640 25 15 820 31 17 1060 45 20 615 895 1150 1485 480 15 11 700 22 14 900 28 17 1170 42 21 670 980 1260 1640 520 13 10 760 19 13 980 25 15 1280 39 20 730 1065 1370 1790 620 22 14 920 30 17 1200 37 19 1540 52 23 870 1290 1680 2155 680 19 13 1020 26 16 1330 33 18 1740 48 22 950 1430 1860 2435 Plywood Siding .Particleboard Sheathing - (M-S "Exterior Glue" and M-2 "Exterior Glue") Nail (galvanized easing) 5/16 1-1/4 6d 280 13 420. 16 550 '17 720 21 390 590 770 1010 3/8 1-3/8 8d 320 16 480 18 620 20 820 22 450 670 870 1150 Nail (common or galvanized box) 3/8 6d 240 15 360 17 460 19 600 22 335 505 645 840 3/8 8d 260 18 380 20 480 21 630 23 365 530 670 880 1/2 280 18 420 20 540 22 700 24 390 590 755 980 1/2 10d 370 21 550 23 720 24 920 25 520 770 1010 1290 5/8 400 21 610' 23 790 24 1040 26 560 855 1105 1455 Nail (galvanized roofing) Structural 1/2 11 ga. galv. roofing nail (0.120"340 4.0 460 5.0 520 5.5 475 645 730 Fiberboard x 1-1/2" long x 7/16" head) Sheathing 25/32 11 ga. galv. roofing nail (0.120"340 4.0 460 5.0 520 5.5 475 645 730x 1-3/4" long x 3/8" head) 1. Nominal unit shear values shall be adjusted in accordance with 4.3.3 to determine ASD allowable unit shear capacity and LRFD factored unit resistance. For general construction requirements see 4.3.6. For specific requirements, see 4.3.7.1 for wood structural panel shear walls, 4.3.7.2 for particleboard shear walls, and 4.3.7.3 for fiberboard shear walls. See Appendix A for common and box nail dimensions. 2. Shears are permitted to be increased to values shown for 15/32 inch sheathing with same nailing provided (a) studs are spaced a maximum of 16 inches on center, or (b) panels are applied with long dimension across studs. 3. For species and grades of framing other than Douglas-Fir-Larch or Southern Pine, reduced nominal unit shear capacities shall be determined by multiplying the-tabulated nominal unit shear capacity by the Specific Gravity Adjustment Factor = [1-(0.5-G)], where G.==, Specific Gravity of the framing lumber from the NDS (Table 11.3.2A). The Specific Gravity Adjustment Factor shall not be great&r than.1-6 4. Apparent shear stiffness values Go, are based on nail slip in framing with moisture content less than or equal to 19% at time of fabrication and panel stiffness values for shear walls constructed with either OS B or 3-ply plywood panels. When 4-ply. or 5-ply.plywood panels or composite panels are used, Go.values .shall be·permittqd to be·increased by 1.2. 5. Where moisture content of the framing is greater than 19% at time-of fabrication, Go values shall be multiplied by 6.5. 6. Where panels are applied on both faces of a shear wall and nail spacing is less than 6" on center on either.side, panel joints shall be offset to fall on different framing members. Alternatively, the width of the nailed face of framing members shall be 3" nominal or greater at adjoining panel edges and nails at all panel edges shall be staggered. 7. Galvanized nails shall be hot-dipped or tumbled. SIN31SAS-UNUSIS3H-30610:1 1983191 AMERICAN FOREST & PAPER ASSOCIATION