v = cs•w; o.os•31 = 1.ss PSF W=DL+0.25LL+0.2S; 20+0.2s•20+0.2•3Q=31PSF
Shear Wall Analysis
Nominal Shear Strength for Shear wall;
Vn = 700 plf (fromTable AISI S400,Table E 1.3-1) Vavailable = 0•Vn = 0.6•7QO plf = 420 plf...(LRFD) Vmax=28 plf Vavalable>Vmax Therefore:Shear Wall is Adequate( 1/2" thickness OSB with #8 self Drill screw edge spacing of the screw 6"and filled spacing is 12")
Refferance Code
FORMULAS
ASCE
V=Cs·w
ASCE 7-16/Section 12.7.2
W=DL+0.25LL+0.2S
Tn=Ag•Fy
AISI S400 Section E3
Vn = Tn•Wt(W'+H')½ AISI S400 Section E3 Vavailable = 0•vn ,0 = 0.91 AISI S400 Section E4(LRFD)
LEGENDS Total Base Shear Force Seismic Response Coefficient Effective Siesmic Weight Dead Load Live Load Snow Load Strap Yield Strength Gross Area of Seel Strap Strap Tesnsile Strength
V Cs w
DL LL s
Ag Fu Tn Vn Vavailable 0
Nominal Tensile Strength of the Strap Nominal Shear Strength of the Wall Design Strength Resistance Factor
NOTE:
Wall Covered with OSB acts as Shear wall and its Resistance to shear is much Adequate and the strap Tensioner also increase the capacity of The Strap Shear Resistance therefore if the thickness of the strap is 1.25inch to 1.5 inch its Adequate. W LE A 2 L 1 L TYPE height(ft) width(ft) strap width(in) strap thickness(in) Ag strap(in 2 ) Fy(Kip) Tn(Kip) 13.9 6.9 2.5 0.033 0.0825 50 4.125 LLL lEl 432097 8 7.5 2.5 0.033 0.0825 50 4.125 8 5.58 2.5 0.033 0.0825 50 4.125 8 5.5 2.5 0.033 0.0825 50 4.125 9 7.5 2.5 0.033 0.0825 50 4.125 11.83 5.83 2.5 0.033 0.0825 5 0 n t1· 25 8 4.17 2.5 0.033 0.0825 50 4.125 --+-8- 5 -F2.5 + 0.066 0.165k!-50 8.25 10.17 5.4 2.5 +- 0.033 0.0825 so 4.125 8 5 2.5 0.033 0.0825 50 4.125 ---j-_1_0.6 3.5 L_2.5 ,_ o.033 0.0825 50 4.125 8.6 3.5 2.5 0.033 0.0825 50 4.125 LNNEll 452 31 NISS Nl45 NLL EE l 571 62
NOTE:
Fu/Fy; 60kip/50kip=1.2......Satisfies Limitation of AISI S400, Section E3(b) V1n.8(K3ip) Vn available(Kip) 1.65 2.82 2.54 D tributery(ft) 1 Atributery(ft 2 )t Vwall(Kip) 4.58 63.662 0.15 6.2 49.6 0.11 Vn>Vwall,Pass P P a a s s s s
2.36 2.12 2.34 2.10 2.64 2.38 1.82 1.64 1.91 1.72 14.-.9337;=:f 1 3 . . 7 9 4 4 2.19 1.97 1.2L_J 1.16 1.55 1.40
0.22 Pass 0.22 Pass 0.12 Pass 0.31 Pass 0.16 Pass 0 0 0 0 . . . .1 1 2 0 6 3 0 4 - L F _ s 0.04 Pass
12.16 97.28 12.16 97.28 5.67 51.03 ll.63T ! 37.5829 9 72 8.75 70 8. 75 88.9875 6.87 54.96 1.8 19.08 1.8 15.48
P P P P
a a a a
s s s s
s s s
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