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Dibble Engineers, Inc. JOB TITLE Wendys Everett-Broadway <br /> 1029 Market Street <br /> Kirkland,WA 98033 JOB NO. 18-395 SHEET NO. <br /> (425)828-4200 CALCULATED BY MWD DATE 9/11/18 <br /> CHECKED BY DATE <br /> Wind Loads -Other Structures: ASCE 7- 10 Ultimate Wind Pressures <br /> Wind Factor= 1.00 <br /> Gust Effect Factor (G)= 0.85 Ultimate Wind Speed= 110 mph <br /> Kzt= 1.00 Exposure= B <br /> A.Solid Freestanding Walls&Solid Signs (&open signs with less than 30%open) <br /> s/h= 1.00 Case A&B <br /> Dist to sign top(h) 17.0 ft B/s= 0.09 Cf = 1.72 <br /> Height (s) 17.0 ft Lr/s= 0.00 F=qz G Cf As = 23.0 As <br /> Width (B) 1.5 ft Kz = 0.596 As= 10.0 sf <br /> Wall Return(Lr)= qz= 15.7 psf F = 230 lbs <br /> Directionality (Kd) 0.85 <br /> Percent of open area Open reduction CaseC <br /> to gross area 0.0% factor= 1.00 Horiz dist from <br /> windward edge Cf F=azGCfAs(psf) <br /> Case C reduction factors 0 to s 1.80 24.0 As <br /> Factor if s/h>0.8= 0.80 s to 2s 1.20 16.0 As <br /> Wall return factor <br /> for Cf at0tos= 1.00 <br /> B.Open Signs&Lattice Frameworks(openings 30%or more of gross area) <br /> Height to centroid of Af(z) 15.0 ft Kz = 0.575 <br /> Base pressure(qz)= 15.1 psf <br /> Width(zero if round) 0.0 ft <br /> Diameter(zero if rect) 2.0 ft D(qz)^.5= 7.78 F=qz G Cf Af = 16.0 Af <br /> Percent of open area I = 0.65 Solid Area:Af = 10.0 sf <br /> to gross area 35.0% Cf = 1.1 F = 160 lbs <br /> Directionality (Kd) 0.85 <br /> C.Chimneys,Tanks,Rooftop Equipment(h>60')&Similar Structures <br /> Height to centroid of Af(z) 15.0 ft Kz = 0.575 <br /> Cross-Section Square Base pressure(qz)= 16.0 psf <br /> Directionality (Kd) 0.90 h/D = 15.00 <br /> Height (h) 15.0 ft <br /> Width (D) 1.0 ft <br /> Type of Surface N/A <br /> Square(wind along diagonal) Square(wind normal to face) <br /> Cf = 1.28 Cf = 1.67 <br /> F=qz G Cf Af = 17.4 Af F=gZGCfAf = 22.7 Af <br /> Af = 10.0 sf Af = 10.0 sf <br /> F= 174 lbs F = 227 lbs <br /> D.Trussed Towers <br /> Height to centroid of Af(z) 15.0 ft Kz = 0.575 <br /> E = 0.27 Base pressure(qz)= 16.9 psf <br /> Tower Cross Section square <br /> Member Shape flat Diagonal wind factor= 1.2 <br /> Directionality (Kd) 0.95 Round member factor= 1.000 <br /> Square(wind along tower diagonal) Square(wind normal to face) <br /> Cf = 3.24 Cf = 2.70 <br /> F=qz G Cf Af = 46.6 Af F=qZ G Cf Af = 38.8 Af <br /> Solid Area:Af = 10.0 sf Solid Area:Af = 10.0 sf <br /> F= 466 lbs F = 388 lbs <br />