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CITY OF SANTA ANA <br />Planning and Building Agency <br />hucri 1. - aghi� PROJECT: <br />'x C�4nsuWn Eia CLIENT: <br />. * <br />JOB NO-: <br />on <br />INPUT DATA <br />Exposure category (B, C or D) <br />Importance factor, 1.0 only, (Table 1.5-2) <br />Iw = <br />Basic wind speed (ASCE 7 26.5.1) <br />V = <br />Topographic factor (26.8 8 Table 26.8-1) <br />K, = <br />Height of top <br />h = <br />Vertical dimension (for wall, s = h) <br />s = <br />Horizontal dimension <br />B = <br />Dimension of return corner <br />Lr = <br />DATE <br />C <br />1.00 <br />110 mph <br />1 Flat <br />9 ft <br />0 It <br />15 It <br />0.67 ft <br />DESIGN SUMMARY <br />Max horizontal wind pressure p = 27 psf <br />Max total horizontal force at centroid of base F = 3.64 kips <br />Max bending moment at centroid of base M = 18.01 ft-kips <br />Max torsion at oentroid of base T = 10.91 ft-kips <br />ANALYSIS <br />Velocitv pressure <br />qh = 0.00256 Kh Kn Kd Ke V2 = 22.38 psf <br />where: qh = velocity pressure at mean roof height, h. (Eq. 26.10-1 page 268), <br />Kh = velocity pressure exposure coefficient evaluated at height, h, (Tab. 26.10-1, pg 268) <br />Kd = wind directionality factor. (Tab. 26.6-1, page 266) <br />h = height of top <br />Wind Force Case A: resultant force though the geometric center (Sec. 29.3.1) <br />p = qh G Cr = = <br />27 <br />psf <br />F = p As = <br />3.64 <br />kips <br />M = F (h - 0.5s) for sign, F (0.55h) for wall = <br />18.01 <br />ft-kips <br />T = = <br />0.00 <br />ft-kips <br />where: G = gust effect factor. (Sec. 26.9) <br />Cf = net force coefficient. (Fig. 29.3-1, page 323) <br />AS=Bs <br />Wind Force Case B: resultant force at 0.2 B offset of the geometric center <br />(Sec. 29.3.1) <br />p = Case A = <br />27 <br />psf <br />F = Case A = <br />3.64 <br />kips <br />M = Case A = <br />18.01 <br />ft-kips <br />T = 0.2 F B = <br />10.91 <br />ft-kips <br />Wind Force Case C: resultant force different at each region (Sec. 29.4.1) <br />PAGE <br />IGN BY: A rove <br />IEWBY: pp <br />R PERMFT=JANCE <br />�9t,t,�e9 W�„ I <br />SOM 59^ t <br />T <br />F <br />Ke = i.00 , (Tab. 26.9-1 page 268) <br />0.85 <br />0.85 <br />9.00 ft <br />0.85 <br />1.42 <br />135.0 ft2 <br />p= %, G Cr Balance s s s s <br />F=EpA►s <br />M = E [ F (h - 0.5s) for sign, F (0.55h) for wall ] <br />T=ETs <br />Distance Cr PI Asi FI Ml TI <br />(ft) (Fig.29.3-1) (psf) (ft) (kips) (ft-kips) (ft-kips) <br />9.0 1.800 34 81 2.77 13.73 8.32 <br />15.0 1.200 23 54 1.23 6.10 -5.55 <br />L 4.01 19.83 2.77 <br />Wind Dir. <br />- Case C may not be considered, footnote 3 of Fig. 6-20 <br />