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PROJECT :Catalina <br />1 £*t ;' t:'·7·9,7-,=CLIENT: <br />JOB NO. 212-013 1 <br />Wind Analysis for Freestanding Wall & Sign Based on ASCE 7-2010 <br />PAGE: <br />DESIGN BY : <br />DATE : 01/11/13 REVIEW BY: <br />INPUT DATA PETE,.014 E Wlk(D fec€ fE?L 0___IpExposure category (B, CorD) = 1 8 1 6/8 47-- 67-P/--IL -Importance factor, 1.0 only, (Table 1.5-2)'w = 1.00 <br />Basic wind speed (ASCE 7-10 26.5.1) V = ' 85 mph <br />Topographic factor (26.8 & Table 26,8-1)1<21 =1 Flat 1 410\\So¥,6 Sign or Frestand:,ng <br />AT <br />\F <br />Height of top h = 18 ft <br />Vertical dimension.(for wall. s = h) s = 18 ft UJ <br />Horizontal dimension B =0.5 ft <br />Dimension of return comer 4 =0.5- ft <br />Ground Surtoce <br />DESIGN SUMMARY <br />Max horizontal wind pressure P =17 psf <br />Max total horizontal force at centroid of base F =0.15 kips <br />Max bending moment at centroid of base M =1.50 ft-kips <br />Max torsion at centroid of base T =0.02 ft-kips <br />ANALYSIS <br />Velocity pressure <br />q = 0.00256 Kb Kzt K V =11.01 psf <br />where:qh = velocity pressure at mean roof height, h. (Eq. 29.3-1 page 307 & Eq. 30.3-1 page 316) <br />1% = velocity pressure exposure coefficient evaluated at height, h, (Tab. 29.3-1, pg 310) =0.70 <br />Iii = wind directionality factor. (Tab. 26.6-1, for building, page 250) =0.85 <br />h = height of top.= 18.00 ft <br />Wind Force Case A: resultant force though the geometric center (Sec. 29.4.1 & Fig. 29.1-1)P =qGC,= = 17 psf :, (142 2,c) Fid=F=p As =---Umr-kips <br />M = F (h - 0.5s) for sign, F (0.55h) for wall = 1.50 ft-kips <br />0.00 ft-kips - <br />where:G = gust effect factor. (Sec. 26.9) - -'0.85 <br />Cf = net force coefficient. (Fig. 29.4-1, page 311)1.80As =Bs = 9.0 ff <br />Wind Force Case B: resultant force at 0.2 B offset of the geometric center (Sec. 29.4.1 & Fig. 29.1-1) <br />p = Case A = 17 psf <br />F = Case A = 0.15 kips <br />M = Case A =1.50 ft-kips <br />T = 0.2 F B = 0.02 ft-kips <br />Wind Force Case C: resultant force different at each region (Sec. 29.4.1 & Fig 29.1-1) <br />P =qh.G Cf Bolonce ssss <br />F=Ip As 1 <br />M = I [F (h - 0.5$) for sign, F (0.551-0 for wall ]41 Ill·la frT=ITs <br />Wind <br />Distance Cf Pi Asi Fi MiL <br />(ft) (Fig.6-20)(psf) (fd) (kips)(ft-kips) (ft-kips) <br />0.5 1.800 17 9 0.15 .1.50 0.00 <br />0.5 1.200 11 0 0.00 0.00 0.00 <br />0.15 1.50 0.00 <== Case C may not be considered, footnote 3 of Fig. 6-20 <br />./ <br />. <br />h <br />\1 <br />11 41,/6 :7 -ri