v = cs•w; o.19•31 = 5.89 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=212 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.
NOTE: Fu/Fy; 60kip/50kip=1.2.....Satisfies Limitation of AISI S400, Section E3(b)
strap thickness(in) Ag strap(in²) Fy(Kip)
WALL TYPE height(ft) width(ft) strap width(in)
Tn(Kip)
Vn(Kip)
Vn available(Kip) D tributery(ft) Atributery(ft²) Vwall(Kip) Vn>Vwall,Pass
LE2 LE8 LE9
9.27
7.7
2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5
0.033 0.033 0.033 0.033 0.033 0.033 0.033 0.033
0.0825 0.0825 0.0825 0.0825 0.0825 0.0825 0.0825 0.0825
50 4.125 50 4.125 50 4.125 50 4.125 50 4.125 50 4.125 50 4.125 50 4.125
2.64 2.34 1.73 1.26 1.81 2.06 1.91 1.85
2.37 2.11 1.56 1.14 1.63 1.86 1.72 1.66
2.75
25.4925 78.744
0.19 Pass 0.60 Pass 0.68 Pass 0.74 Pass 0.52 Pass 1.24 Pass 0.69 Pass 1.23 Pass
11.58
8 6
6.8 6.8 6.8
13
88.4 96.9
LE10 LE14 NI20 NI22 NI24
14.25 12.67 10.67
4.58 6.17 6.17
5.33
67.5311 161.8639
15.17
10.5
5.5
8.63
90.615
10.33
5.17
15.62
161.3546
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