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BLD2020-00264 - 07 STRUCTURAL CALCULATIONS
St e e l S t r o n g - W a l l ® C- L - S W 1 7 © 2 0 1 7 S I M P S O N S T R O N G - T I E C O M P A N Y I N C . 12 Steel Strong-Wall ® Shearwalls Standard Application on Concrete Foundations SSW Model Allowable Axial Load (lb.) Seismic 2 Wind Allowable ASD Shear Load V (lb.) Dri t at Allowable Shear (in.) Anchor Tension at Allowable Shear 5 (lb.) Allowable ASD Shear Load V (lb.) Dri t at Allowable Shear (in.) Anchor Tension at Allowable Shear 5 (lb.) SSW12x7 1,000 955 0.36 9,840 1,215 0.46 13,620 4,000 955 0.36 9,840 1,095 0.42 11,765 7,500 890 0.34 9,010 890 0.34 9,010 SSW15x7 1,000 1,855 0.36 15,655 1,860 0.36 15,715 4,000 1,665 0.33 13,550 1,665 0.33 13,550 7,500 1,445 0.28 11,340 1,445 0.28 11,340 SSW18x7 1,000 2,905 0.34 19,660 3,480 0.41 25,805 4,000 2,905 0.34 19,660 3,250 0.38 23,135 7,500 2,905 0.34 19,660 2,980 0.35 20,370 SSW21x7 1,000 4,200 0.32 23,755 4,440 0.34 25,710 4,000 4,200 0.32 23,755 4,440 0.34 25,710 7,500 4,200 0.32 23,755 4,310 0.33 24,635 SSW24x7 1,000 5,495 0.29 26,270 5,730 0.31 27,835 4,000 5,495 0.29 26,270 5,730 0.31 27,835 7,500 5,495 0.29 26,270 5,730 0.31 27,835 SSW12x7.4 1,000 870 0.39 9,515 1,105 0.49 13,070 4,000 870 0.39 9,515 970 0.43 10,940 7,500 750 0.33 7,940 750 0.33 7,940 SSW15x7.4 1,000 1,685 0.39 15,035 1,700 0.39 15,215 4,000 1,500 0.34 12,905 1,500 0.34 12,905 7,500 1,270 0.29 10,510 1,270 0.29 10,510 SSW18x7.4 1,000 2,700 0.37 19,475 3,255 0.44 25,790 4,000 2,700 0.37 19,475 3,040 0.42 23,125 7,500 2,700 0.37 19,475 2,790 0.38 20,390 SSW21x7.4 1,000 3,890 0.35 23,420 4,230 0.38 26,405 4,000 3,890 0.35 23,420 4,230 0.38 26,405 7,500 3,890 0.35 23,420 4,035 0.36 24,655 SSW24x7.4 1,000 5,330 0.34 27,610 5,450 0.34 28,485 4,000 5,330 0.34 27,610 5,450 0.34 28,485 7,500 5,330 0.34 27,610 5,450 0.34 28,485 SSW12x8 1,000 775 0.42 9,180 985 0.53 12,560 4,000 775 0.42 9,180 865 0.47 10,550 7,500 665 0.36 7,630 665 0.36 7,630 SSW15x8 1,000 1,505 0.42 14,515 1,530 0.43 14,835 4,000 1,345 0.37 12,545 1,345 0.37 12,545 7,500 1,135 0.32 10,190 1,135 0.32 10,190 SSW18x8 1,000 2,480 0.41 19,525 2,985 0.50 25,795 4,000 2,480 0.41 19,525 2,790 0.47 23,160 7,500 2,480 0.41 19,525 2,560 0.43 20,410 SSW21x8 1,000 3,560 0.39 23,360 3,960 0.43 27,240 4,000 3,560 0.39 23,360 3,960 0.43 27,240 7,500 3,560 0.39 23,360 3,700 0.41 24,660 SSW24x8 1,000 4,865 0.37 27,435 5,105 0.39 29,370 4,000 4,865 0.37 27,435 5,105 0.39 29,370 7,500 4,865 0.37 27,435 5,055 0.39 28,960 SSW12x9 1,000 660 0.47 8,745 840 0.60 11,915 4,000 660 0.47 8,745 705 0.50 9,485 7,500 505 0.36 6,380 505 0.36 6,380 SSW15x9 1,000 1,315 0.45 14,250 1,315 0.47 14,250 4,000 1,130 0.38 11,740 1,130 0.40 11,740 7,500 925 0.31 9,235 925 0.33 9,235 SSW18x9 1,000 2,145 0.47 18,890 2,645 0.58 25,800 4,000 2,145 0.47 18,890 2,470 0.54 23,130 7,500 2,145 0.47 18,890 2,265 0.50 20,370 SSW21x9 1,000 3,145 0.46 23,265 3,590 0.52 28,215 4,000 3,145 0.46 23,265 3,530 0.51 27,490 7,500 3,145 0.46 23,265 3,280 0.47 24,680 SSW24x9 1,000 4,285 0.44 27,210 4,605 0.47 30,150 4,000 4,285 0.44 27,210 4,605 0.47 30,150 7,500 4,285 0.44 27,210 4,480 0.46 28,970 See ootnotes on page 13. St e e l S t r o n g - W a l l ® C- L - S W 1 7 © 2 0 1 7 S I M P S O N S T R O N G - T I E C O M P A N Y I N C . 13 Steel Strong-Wall ® Shearwalls Standard Application on Concrete Foundations SSW Model Allowable Axial Load (lb.) Seismic 2 Wind Allowable ASD Shear Load V (lb.) Dri t at Allowable Shear (in.) Anchor Tension at Allowable Shear 5 (lb.) Allowable ASD Shear Load V (lb.) Dri t at Allowable Shear (in.) Anchor Tension at Allowable Shear 5 (lb.) SSW12x10 1,000 570 0.52 8,345 725 0.67 11,300 4,000 570 0.52 8,345 570 0.52 8,345 7,500 360 0.33 4,930 360 0.33 4,930 SSW15x10 1,000 1,110 0.53 13,150 1,145 0.54 13,690 4,000 960 0.45 10,975 960 0.45 10,975 7,500 715 0.34 7,775 715 0.34 7,775 SSW18x10 1,000 1,860 0.53 18,030 2,360 0.67 25,545 4,000 1,860 0.53 18,030 2,215 0.63 23,095 7,500 1,860 0.53 18,030 2,035 0.57 20,395 SSW21x10 1,000 3,045 0.50 25,905 3,265 0.56 28,795 4,000 3,045 0.50 25,905 3,170 0.54 27,510 7,500 2,780 0.45 22,780 2,780 0.47 22,780 SSW24x10 1,000 3,835 0.50 27,100 4,205 0.55 30,920 4,000 3,835 0.50 27,100 4,205 0.55 30,920 7,500 3,790 0.49 26,660 3,790 0.49 26,660 SSW15x11 1,000 975 0.58 12,625 1,015 0.60 13,285 4,000 815 0.48 10,135 815 0.48 10,135 7,500 550 0.33 6,470 550 0.33 6,470 SSW18x11 1,000 1,635 0.58 17,295 2,075 0.73 24,280 4,000 1,635 0.58 17,295 2,010 0.71 23,110 7,500 1,635 0.58 17,295 1,730 0.61 18,645 SSW21x11 1,000 2,485 0.58 22,325 2,990 0.70 29,230 4,000 2,485 0.58 22,325 2,785 0.65 26,220 7,500 2,305 0.54 20,205 2,305 0.54 20,205 SSW24x11 1,000 3,475 0.57 27,055 3,845 0.63 31,285 4,000 3,475 0.57 27,055 3,710 0.60 29,680 7,500 3,205 0.52 24,260 3,205 0.52 24,260 SSW15x12 1,000 815 0.63 11,280 905 0.70 12,855 4,000 690 0.53 9,245 690 0.53 9,245 7,500 390 0.30 4,905 390 0.30 4,905 SSW18x12 1,000 1,450 0.63 16,605 1,845 0.80 23,220 4,000 1,450 0.63 16,605 1,815 0.79 22,650 7,500 1,435 0.62 16,380 1,435 0.62 16,380 SSW21x12 1,000 2,210 0.63 21,485 2,755 0.79 29,555 4,000 2,210 0.63 21,485 2,420 0.69 24,335 7,500 1,900 0.54 17,690 1,900 0.54 17,690 SSW24x12 1,000 3,150 0.63 26,710 3,540 0.71 31,575 4,000 3,150 0.63 26,710 3,250 0.65 27,890 7,500 2,705 0.54 21,855 2,705 0.54 21,855 SSW18x13 1,000 1,335 0.68 16,580 1,695 0.87 23,105 4,000 1,335 0.68 16,580 1,580 0.81 20,830 7,500 1,180 0.60 14,195 1,180 0.60 14,195 SSW21x13 1,000 1,985 0.68 20,765 2,520 0.87 29,200 4,000 1,985 0.68 20,765 2,110 0.73 22,530 7,500 1,555 0.53 15,300 1,555 0.53 15,300 SSW24x13 1,000 2,830 0.68 25,795 3,275 0.79 31,755 4,000 2,830 0.68 25,795 2,860 0.69 26,165 7,500 2,280 0.55 19,545 2,280 0.55 19,545 1. Allowable shear loads and anchor tension orces are applicable to installation on concrete with minimum ' c = 2,500 psi using the ASD basic (Section 1605.3.1) or the alternative basic (Section 1605.3.2) load combinations. Load values include evaluation o bearing stresses on the oundation and do not require urther evaluation by the Designer. 2. For seismic designs based on the 2015 IBC using R = 6.5. For other codes, use the seismic coe fcients corresponding to light- rame bearing walls with wood structural panels or sheet steel panels. 3. Allowable shear, dri t, and anchor tension values may be interpolated or intermediate height or axial loads. 4. High-strength anchor bolts are required or anchor tension orces exceeding the allowable load or standard-strength bolts tabulated on pages 29–30. High-strength anchor bolts are required or SSW12 when the seismic overturning moment (seismic shear x shearwall height) exceeds 61,600 in.-lb. See pages 29–35 or SSWAB anchor bolt in ormation and anchorage solutions. 5. Tabulated anchor tension loads assume no resisting axial load. For anchor tension loads at design shear values and including the e ect o axial load, re er to the Strong-Wall Selector web application or use the equations on page 15. Dri ts at lower design shear may be linearly reduced. 6. See page 14 or allowable out-o -plane loads and axial capacities. St e e l S t r o n g - W a l l ® C- L - S W 1 7 © 2 0 1 7 S I M P S O N S T R O N G - T I E C O M P A N Y I N C . 16 Steel Strong-Wall ® Shearwalls Garage Portal Systems on Concrete Foundations Simpson Strong-Tie o ers a Steel Strong-Wall ® shearwall option or garage portal systems which combines simplifed installation with superior per ormance. •Higher capacity with reduced concrete anchorage requirements (see Alternate Garage Front Options on page 17 or other options) •Same anchor bolt template •Complete kit available to simpli y the connection to the header or beam For product data and naming scheme in ormation, see pages 10–11. Suggested Example Specifcation: SSW12x7 with SSWP-KT Garage Header Rough Opening Height Model No.H Curb Rough Opening Height SSW12x7 SSW15x7 SSW18x7 5 ½"7'-1 ½" 6"7'-2" SSW12x7.4 SSW15x7.4 SSW18x7.4 0"7'-1 ½" SSW12x8 SSW15x8 SSW18x8 5 ½"8'-2 ¾" 3 6"8'-3 ¼" 3 1. The height o the garage curb above the garage slab is critical or rough header opening at garage return walls. 2. Shims are not provided with Steel Strong-Wall ® . 3. Furring down garage header may be necessary or correct rough opening height. Installation •Portal Frame Connection Kit is required to achieve increased load values listed or portal rame system. •SSWPS straps must be installed on exterior ace o the Steel Strong-Wall ® shearwall. Position header ush with exterior ace o the Steel Strong-Wall shearwall. •Do not cut the Steel Strong-Wall or enlarge existing holes. Doing so will compromise the per ormance o the wall. •Do not use an impact wrench to tighten nuts on the anchor bolts. •Maximum shim thickness between the Steel Strong-Wall and header is 7" using Simpson Strong-Tie ® Strong-Drive ® ¼" x 3 ½" SDS Heavy-Duty Connector screws. •Walls with 2x4 preattached studs may also be used in 2x6 wall raming. Install the wall ush to exterior ace o the raming and add urring to the opposite side. •Walls may be installed with solid or multi-ply headers, see detail 11/SSW2 page 68 or details. Portal Frame Connection Kit Model No.Contents SSWP-KT (2) 10 gauge SSWPS straps (8) #14 x 1" sel -drilling screws Installation instructions For a complete set o wall profle drawings, see page 10. Exterior ace Shear transfer by Designer Rough opening height Steel Strong-Wall ® panel (exterior face) Simpson Strong-Tie ® LSTA24 strap (min.) at beam to post See page 11 for connection to foundation See page 11 for header connection Foundation design (size and reinforcement) by Designer Header by Designer – 3⅛" min. width x 12" min. nominal depth* 8' Min. 16'-4" Max.* Simpson Strong-Tie ® SSWPS straps H Curb Header support post (design by Designer) Column base detail by Designer (not shown for clarity) Simpson Strong-Tie ® STHD10 holdown (1000 lb. uplift capacity min.)* (10) 10dx 2½" minimum nails (4) #14 x 1" (provided with SSWP-KT) Align notches with bottom of header Simpson Strong-Tie ® SSWPS straps Header Max. ⅞" shim as required Steel Strong-Wall ® panel DO NOT cut wall or enlarge existing holes *This installation re ects lateral load requirements o a single-wall portal system. It is the Designer’s responsibility to provide a complete load path or all loads in accordance with the governing codes. Re er to ootnotes 2, 4 and 9 on page 17. U.S. Patent 8,281,551 Canadian Patent 2,489,845 St e e l S t r o n g - W a l l ® C- L - S W 1 7 © 2 0 1 7 S I M P S O N S T R O N G - T I E C O M P A N Y I N C . 17 Steel Strong-Wall ® Shearwalls Garage Portal Systems on Concrete Foundations H Curb H Curb Garage Wall Option 1 Garage Wall Option 2 Note: Steel Strong-Wall ® nominal 7 ft. height walls are 80", that is 2" taller than Strong-Wall ® wood shearwalls. See page 68, detail 11/SSW2 for multi-ply header options U.S. Patent 8,281,551 Canadian Patent 2,489,845 Header and post by Designer Column base detail by Designer (not shown) Shear transfer by Designer Header by Designer — 3⅛" min. width H Curb Rough opening height SSW Model Allowable Axial Load (lb.) Single-Wall Garage Portal System 2 Seismic 3 Wind Allowable ASD Shear Load V (lb.) Dri t at Allowable Shear (in.) Anchor Tension at Allowable Shear 8 (lb.) Allowable ASD Shear Load V (lb.) Dri t at Allowable Shear (in.) Anchor Tension at Allowable Shear 8 (lb.) SSW12x7 w/ SSWP-KT 1,000 1,350 0.42 11,550 1,645 0.51 15,390 4,000 1,350 0.42 11,550 1,435 0.45 12,560 7,500 1,185 0.37 9,750 1,185 0.37 9,750 SSW15x7 w/ SSWP-KT 1,000 2,210 0.38 15,930 2,210 0.38 15,930 4,000 2,000 0.34 13,925 2,000 0.34 13,925 7,500 1,760 0.30 11,835 1,760 0.30 11,835 SSW18x7 w/ SSWP-KT 1,000 3,865 0.40 25,785 3,865 0.40 25,785 4,000 3,610 0.38 23,125 3,610 0.38 23,125 7,500 3,315 0.35 20,405 3,315 0.35 20,405 SSW12x7.4 w/ SSWP-KT 1,000 1,275 0.45 11,695 1,535 0.54 15,320 4,000 1,275 0.45 11,695 1,310 0.46 12,135 7,500 1,045 0.37 9,055 1,045 0.37 9,055 SSW15x7.4 w/ SSWP-KT 1,000 2,065 0.42 15,900 2,065 0.42 15,900 4,000 1,855 0.37 13,765 1,855 0.37 13,765 7,500 1,590 0.32 11,330 1,590 0.32 11,330 SSW18x7.4 w/ SSWP-KT 1,000 3,615 0.45 25,770 3,615 0.45 25,770 4,000 3,380 0.42 23,150 3,380 0.42 23,150 7,500 3,100 0.38 20,390 3,100 0.38 20,390 SSW12x8 w/ SSWP-KT 1,000 1,180 0.46 11,845 1,375 0.55 14,770 4,000 1,140 0.45 11,305 1,140 0.45 11,305 7,500 875 0.35 8,110 875 0.35 8,110 SSW15x8 w/ SSWP-KT 1,000 1,865 0.42 15,570 1,865 0.42 15,570 4,000 1,640 0.37 13,130 1,640 0.37 13,130 7,500 1,380 0.31 10,600 1,380 0.31 10,600 SSW18x8 w/ SSWP-KT 1,000 3,280 0.47 25,325 3,315 0.48 25,775 4,000 3,100 0.45 23,160 3,100 0.45 23,160 7,500 2,840 0.41 20,365 2,840 0.41 20,365 1. Allowable shear loads and anchor tension orces are applicable to Single-Wall Garage Portal System installation on concrete with minimum 'c = 2,500 psi using the ASD basic (Section 1605.3.1) or the alternative basic (Section 1605.3.2) load combinations. Load values include evaluation o bearing stresses. 2. A Double-Wall Garage Portal System consists o two walls with a header continuous across both panels. The allowable load is twice the Single-Wall Portal value. 3. For seismic designs based on the 2015 IBC using R=6.5. For other codes, use the seismic coe fcients corresponding to light- rame bearing walls with wood structural panels or sheet steel panels. 4. The minimum header size shown in the details is the minimum required or lateral rigidity o the portal system. Larger headers may be required due to vertical loading. Support post upli t connectors may be reduced where justifed by calculations. 5. Recommended header moisture content is 19% or less at time o installation. 6. Allowable shear, dri t and anchor tension values may be interpolated or intermediate height or axial loads. 7. High-strength anchor bolts are required or anchor tension orces exceeding the allowable load or standard-strength bolts tabulated on pages 29–30. High-strength anchor bolts are required or SSW12 when the seismic overturning moment (seismic shear x shearwall height) exceeds 61,600 in.-lb. See pages 29–35 or SSWAB anchor bolt in ormation and anchorage solutions. 8. Tabulated anchor tension loads assume no resisting axial load. For anchor tension loads at design shear values and including the e ect o axial load, re er to the Strong-Wall Selector web application or use the equations on page 15 (include K actor in upli t calculations). Dri ts at lower design shear may be linearly reduced. 9. Longer header spans can be accommodated i larger headers are used such that equivalent sti ness is equal to or greater than that provided by the minimum header size and maximum length indicated. Alternate Garage Front Options These alternate garage ront options may be used or applications when the Steel Strong-Wall ® shearwall is installed at the ull height (option 1) or without the additional Portal Frame Kit (option 2), when higher capacity or reduced concrete anchorage are not needed. Re er to the Standard Application on Concrete Foundations on pages 10–13 or product data and allowable load values. For Garage Wall Option 2, the Designer shall design or: 1. Shear trans er 2. Out-o -plane loading e ect 3. Increased overturning and dri t due to additional height St e e l S t r o n g - W a l l ® C- L - S W 1 7 © 2 0 1 7 S I M P S O N S T R O N G - T I E C O M P A N Y I N C . 20 Steel Strong-Wall ® Shearwalls Balloon Framing on Concrete Foundations Simpson Strong-Tie ® o ers a complete stacked-wall solution or balloon- raming applications. The Steel Strong-Wall ® option or heights up to 20' combines simplifed installation with superior per ormance. •Some o the highest loads in the industry •Same anchor bolt template as single-story installation •Complete kit available to simpli y the connection between the walls Material & Finish: See page 10. Codes: ICC-ES ESR-1679: City o L.A. RR25625; State o Florida FL5113 Steel Strong-Wall ® Balloon Framing Stacked-Wall Product Data — Bottom Walls Model No. W (in.) H (in.) T (in.) Anchor Bolts Qty.Dia. (in.) SSW15x8-STK 15 93 ¼3 ½2 1 SSW15x10-STK 15 117 ¼3 ½2 1 SSW18x8-STK 18 93 ¼3 ½2 1 SSW18x10-STK 18 117 ¼3 ½2 1 SSW21x8-STK 21 93 ¼3 ½2 1 SSW21x10-STK 21 117 ¼3 ½2 1 SSW24x8-STK 24 93 ¼3 ½2 1 SSW24x10-STK 24 117 ¼3 ½2 1 1. Specifc wall combinations provided. See load table on page 22. Contact Simpson Strong-Tie or additional wall combinations. 2. See page 10–11 or product data on top walls. Balloon-Framing Wall Connection Kit Model No.Contents SSWBF-KT (2) 1" x 25" Threaded Rods F1554 Grade 36 (4) Heavy Hex Nuts Installation Instructions 1. Two heavy hex nuts included with each wall. Wood Block-to-Top Plate Connection Strong-Wall ® Width Total Connectors Recommended Connectors 15" Wall 4 (2 Each Side) Simpson Strong-Tie ® LTP4 or A35 18" Wall 4 (2 Each Side) 21" Wall 6 (3 Each Side) 24" Wall 6 (3 Each Side) 1. Alternate connectors with equivalent shear capacity may be specifed by the Designer. Stacked-Wall Solution For Balloon Framing U.S. Patent 8,281,551; 8,689,518 Canadian Patent 2,489,845 Wood block eliminates the need or special height walls Balloon Framing Stacked-Wall Connector Kit Model SSWBF-KT (Order separately) Factory installed stacked-wall option — To order add “-STK” su x to the model number (Example: SSW18x10-STK) Standard Steel Strong-Wall ® Foundation design (size and reinforcement) by Designer Top Wall: SSW18x8 Steel Strong-Wall Nominal Height ( t.) Naming Legend Width (in.) Stacked Wall (For Bottom Walls Only) Bottom Wall: SSW18x10-STK Steel Strong-Wall Width (in.) Nominal Height ( t.) Suggested Example Specifcation: SSW18x8 over SSW18x10-STK St e e l S t r o n g - W a l l ® C- L - S W 1 7 © 2 0 1 7 S I M P S O N S T R O N G - T I E C O M P A N Y I N C . 21 Steel Strong-Wall ® Shearwalls Balloon Framing on Concrete Foundations Installation •Do not cut the Steel Strong-Wall ® or enlarge existing holes, doing so will compromise the per ormance o the wall. •Do not use an impact wrench to tighten nuts on the anchor bolts. •Maximum top block height between the Steel Strong-Wall and top plates is 12". See detail 4/SSW3 on page 75. •Full height studs are required or balloon- ramed wall installation (by Designer). Two 2x6 minimum each side with 10d nails at 16" o.c. Block Height (H) CS16 Nailing (0.148 x 1½" Nails) Into Block Into SSW Nailer Stud H ≤ 8"N/A N/A 8" < H ≤ 10"(8) 10d x 1 ½"(8) 10d x 1 ½" 10" < H ≤ 12"(10) 10d x 1 ½"(10) 10d x 1 ½" SSWAB1 Standard Steel Strong-Wall ® panel Stud Nailing: 10d at 16" o.c. stud to SSW nailer-stud and stud-to-stud Use SSWBF-KT connection kit to attach standard wall above to “-STK” model below Full height studs are required or balloon ramed wall installation (by Designer) “-STK” Steel Strong-Wall panel Place Steel Strong-Wall over the anchor bolts and secure with heavy hex nuts (provided). Snug tight t required, do not use an impact wrench. • 1 5" wrench/socket required or 1" nut Balloon Framing on Concrete Through Wood Floor Installation or frst-story wood- oor system, speci y taller wall model to allow or oor raming. Top-plate height measured rom bottom o Steel Strong-Wall ® to top o plates Joist or solid blocking below ull height studs Baloon Framing Installation U.S. Patent 8,281,551; 8,689,518 Canadian Patent 2,489,845 DO NOT cut wall or enlarge existing holes Top-o -Wall Connection Simpson Strong-Tie ® CS16 or block heights greater than 8" Shear connectors each side o block LTP4 or A35 Attach top o wall to block with ¼" x 3½" SDS Heavy-Duty Connector screws (provided) Solid 4x or 6x shim block Balloon Framing Stacked-Wall Connection Detail Double nuts Additional studs not shown or clarity. All nuts require a snug tight t Single nut St e e l S t r o n g - W a l l ® C- L - S W 1 7 © 2 0 1 7 S I M P S O N S T R O N G - T I E C O M P A N Y I N C . 22 Steel Strong-Wall ® Shearwalls Balloon Framing on Concrete Foundations Nominal Wall Height ( t.) Actual Stacked SSW Height 4 ( t. - in.) Bottom Wall SSW Model Top Wall SSW Model Seismic 2 Wind Allowable ASD Shear Load V 6 (lb.) Dri t at Allowable Shear (in.) Anchor Tension at Allowable Shear 8 (lb.) Allowable ASD Shear Load V 6 (lb.) Dri t at Allowable Shear (in.) Anchor Tension at Allowable Shear 8 (lb.) 15"-Wide Walls 15 14 - 5 ¼SSW15x8-STK 6 SSW15x7 6 ———705 1.00 12,465 16 15 - 6 ½SSW15x8-STK 6 SSW15x8 6 ———645 1.06 12,105 17 16 - 5 ¼SSW15x10-STK 6 SSW15x7 6 ———595 1.11 11,820 18 17 - 6 ½SSW15x10-STK 6 SSW15x8 6 ———555 1.17 11,655 19 18 - 6 ½SSW15x10-STK 6 SSW15x9 6 ———520 1.23 11,505 20 19 - 6 ½SSW15x10-STK 6 SSW15x10 6 ———485 1.29 11,260 18"-Wide Walls 15 14 - 5 ¼SSW18x8-STK SSW18x7 890 0.79 12,020 1,130 1.00 16,105 16 15 - 6 ½SSW18x8-STK SSW18x8 825 0.84 11,875 1,050 1.07 15,945 17 16 - 5 ¼SSW18x10-STK SSW18x7 770 0.89 11,770 980 1.13 15,795 18 17 - 6 ½SSW18x10-STK SSW18x8 ———915 1.20 15,585 19 18 - 6 ½SSW18x10-STK SSW18x9 ———860 1.27 15,440 20 19 - 6 ½SSW18x10-STK SSW18x10 ———810 1.33 15,290 21"-Wide Walls 15 14 - 5 ¼SSW21x8-STK SSW21x7 1,295 0.78 14,605 1,670 1.00 20,000 16 15 - 6 ½SSW21x8-STK SSW21x8 1,220 0.84 14,710 1,550 1.07 19,770 17 16 - 5 ¼SSW21x10-STK SSW21x7 1,135 0.89 14,520 1,445 1.13 19,550 18 17 - 6 ½SSW21x10-STK SSW21x8 1,065 0.95 14,425 1,350 1.20 19,300 19 18 - 6 ½SSW21x10-STK SSW21x9 1,000 1.00 14,285 1,270 1.27 19,145 20 19 - 6 ½SSW21x10-STK SSW21x10 940 1.05 14,120 1,195 1.33 18,930 24"-Wide Walls 15 14 - 5 ¼SSW24x8-STK SSW24x7 1,680 0.72 16,100 2,295 1.00 23,645 16 15 - 6 ½SSW24x8-STK SSW24x8 1,630 0.81 16,790 2,155 1.07 23,730 17 16 - 5 ¼SSW24x10-STK SSW24x7 1,545 0.87 16,950 2,005 1.13 23,405 18 17 - 6 ½SSW24x10-STK SSW24x8 1,470 0.94 17,115 1,875 1.20 23,130 19 18 - 6 ½SSW24x10-STK SSW24x9 1,390 1.00 17,095 1,765 1.27 22,960 20 19 - 6 ½SSW24x10-STK SSW24x10 1,310 1.05 16,945 1,660 1.33 22,685 1. Allowable shear loads and anchor tension orces are applicable to installation on concrete with minimum 'c = 2,500 psi using the ASD basic (Section 1605.3.1) or the alternative basic (Section 1605.3.2) load combinations. Load values include evaluation o bearing stresses on the oundation and do not require urther evaluation by the Designer. 2. For seismic designs based on the 2015 IBC using R = 6.5. For other codes, use the seismic coe fcients corresponding to light- rame bearing walls with wood structural panels or sheet steel panels. 3. Allowable shear, dri t, and anchor tension values apply to the nominal wall heights listed and may be linearly interpolated or intermediate heights. 4. Solid shim blocks (12" maximum) shall be used to attain specifed nominal wall height. See detail 4/SSW3 on page 75 or additional details. 5. Full-height studs are required or balloon ramed wall installation, which must be designed or out-o -plane loads in accordance with the applicable code. Two 2x6 minimum are required on each side and astened together with 10d common nails at 16 inches on center. 6. Loads are based on a 1,000 lb. maximum axial load acting on the entire panel in combination with the shear load. For shear loads at 2,000 lb. maximum axial load, multiply allowable shears by 0.91 or SSW15x models; no reduction required or other wall models. 7. High-strength anchor bolts are required or anchor tension orces exceeding the allowable load or standard-strength bolts tabulated on pages 29–30. See pages 29–35 or SSWAB anchor bolt in ormation and anchorage solutions. 8. Tabulated anchor tension loads assume no resisting axial load. For anchor tension loads at design shear values and including the e ect o axial load, re er to the Strong-Wall Shearwall Selector web application or use the equations on page 15. Dri ts at lower design shear may be linearly reduced.