Laserfiche WebLink
PROJECT : [CAf.ALINA-VE.F..N:.3."r".:"e.. .1.6--,:,r-3,..-1'79 PAGE: 7T" '7773,= <br />CLIENT : - 7.1,-*':*·012.,t.W..2112.2 :624 64<- ..117 .DESIGN BY : 1. ;.t,;..-s'i,2, £' 'JOB NO.: 52012-013'· Ii:3-1-· Cf DATE : 3,5 , ·. 40 .REVIEW BY : . ·,; 7-- ,·'+ :., <br />Wifid<Atilly#i€ffd'*3Eidatifieli#itiWCall*fS]tih Based'on·ASCEN05 ·r .. <br />· <br />INPUT DATA <br />Exposure category (B, C or D) <br />Importance factor, pg 73, (0.87, 1.0 or 1.15),1.00 'u Category Il <br />Basic wind speed (3 sec. gustwind) -i , 85 '. j mph <br />Topographic factor (Sec.6.5.7.2, pg 26 & 45) 1<z, 1 v Flat <br />Height of top h = i' ·6 '- ft <br />Vertical dimension (for wall s = h)s = % '6. r,ft <br />Horizontal dimension B = h' 10 j .ft <br />Dimension of return corner 4 = 20'67 ft <br />L.4.- <br />, <br />Or <br />- Solid Sign <br />\F <br />Ground Surface <br />DESIGN SUMMARY <br />Max horizontal wind pressure P =20 psf <br />Max total horizontal force at centroid of base F =1.06 kips <br />Max bending moment at centroid of base M =3.51 ft-kips <br />Max torsion at centroid of base T =1.93 ft-kips <br />ANALYSIS <br />Velocity pressure <br />q = 0.00256 Kh Kzt K V 1 =13.36 psf <br />velocity pressure at mean roof height, h. (Eq. 6-15, page 27) <br />velocity pressure exposure coefficient evaluated at height, h, (Tab. 6-3, Case l,pg 79) =0.85 <br />wind directionality factor. (Tab. 6-4, for building, page 80)0.85 <br />h = height of top = 6.00 ft <br />where: h - <br />Kh = <br />Kd = <br />Wind Force Case A: resultant force though the geometric center . (Sec. 6.5.14 & Fig. 6-20) <br />p = qh G Ch= = 16 psf <br />P AS =0.97 kips <br />F (h - 0.5s) for sign, F (0.55h) for wall =3.19 ft-kips <br />= 0.00 ft-kips <br />F= <br />T= <br />w„=re:G = gust effect factor. (Sec. 6.5.8, page 26). =0.85 P <br />Cf = net force coefficient. (Fig. 6-20, page 73)1.42 <br />60.OffAS=Bs <br />Wind Force Case B: resultant force at 0.2 B offset of the geometric center (Sec. 6.5.14 & Fig. 6-20) <br />Case A = 16 psf <br />Case A = 0·97 kips <br />Case A = 3.19 ft-kips <br />0.2 FB =1.93 ft-kips <br />P= <br />F= <br />M= <br />T= <br />Wind Force Case C: resultant force different at each region (Sec. 6.5.14 & Fig. 6-20) <br />P =qh G Cf Balance <br />1 <br />O.5s) for sign, F (O.55h) for wall] Lu <br />F=EPA <br />M=I[F Ch- <br />T=ITS <br />S S S. S <br />1l1l/A It <br />'Wind Dir. <br />Distance CY Pi Asi Fi Mi Ti <br />(ft) (Fig.6-20)(psf) (fA .(kips) (ft-kips) ' .(ft-kips) <br />6.0 1.800 20 36 0.74 2.43 1.47 <br />10.0 1.200 14 24 0.33 1.08 -0.98 <br />1.06 3.51 0.49 <== Case C may not be considered, footnote 3 of Fig. 6-20