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Page 1 <br /> MecaWind v2327 <br /> Software Developer: Meca Enterprises Inc. , www.meca.biz, Copyright <) 2018 <br /> Calculations Prepared by: <br /> Date: Feb 08., 2021 <br /> FileLocation : <br /> Basic Wind Parameters <br /> Wind Load Standard = ASCE 7-16 Exposure Category = C <br /> Wind Design Speed = 110.0 mph Risk Category = II <br /> Structure Type = Other Other Structure Type = Solid Sign <br /> General Wind Settings <br /> = ASCE 7-16 Wind Parameters = <br /> InclLF = Include ASD Load Factor of 0. 6 in Pressures = True <br /> DynType = Dynamic Type of Structure = Rigid <br /> NF = Natural Frequency of Structure (Mode 1) = 1. 000 Hz <br /> NF = Natural Frequency of Structure = 1. 000 Hz <br /> Zg = Altitude (Ground Elevation) above Sea Level = 0. 000 ft. <br /> Bdist = Base Elevation of Structure = 0.000 ft <br /> GenElev = Specify the Elevations For Wind Pressures = Mean Roof Ht <br /> Reacs = Show the Base Reactions in the output = False <br /> MWFRSType = MWFRS Method Selected = Ch 27 Pt 1 <br /> Topographic Factor per Fig 26.8-1 <br /> Topo = Topographic Feature = None <br /> Kzt = Topographic Factor = 1. 000 <br /> Solid Sign Inputs <br /> : Solid Sign = h : Height to Top of Sign = 14.500 ft <br /> B : Horizontal Width of Sign = 8. 100 ft Lr : Dimension of return corner= 2.000 ft <br /> s : Vertical Height of Sign = 4 .500 ft e : Solidity Ratio = 1. 000 I <br /> Att: Attached to Wall = False <br /> Exposure Constants per Table 26.11-1: <br /> Alpha: Const from Table 26. 11-1= 9.500 Zg: Const from Table 26. 11-1= 900. 000 ft <br /> At: Const from Table 26. 11-1= 0.105 Bt: Const from Table 26. 11-1= 1.000 <br /> Am: Const from Table 26. 11-1= 0.154 Bm: Const from Table 26.11-1= 0. 650 <br /> C: Const from Table 26. 11-1= 0.200 Eps: Const from Table 26.11-1= 0.200. <br /> Gust Factor Calculation: <br /> Gust Factor Category I Rigid Structures - Simplified Method <br /> G1 = For Rigid Structures (Nat. Freq.>1 Hz) use 0. 85 = 0.85 <br /> Gust Factor Category II Rigid Structures - Complete Analysis <br /> Zm = 0. 6 * Ht = 15.000 ft <br /> Izm = Cc * (33 / Zm) ^ 0. 167 = 0.228 <br /> Lzm = L * (Zm / 33) ^ Epsilon = 427. 057 <br /> = (1 / (1 + 0.63 * ( (B + Ht). / Lzm) A0. 63) ) ^0. 5 = 0. 954 <br /> G2 = 0. 925* ( (1+1.7*lzm*3.4*Q) / (1+1 .7*3. 4*lzm) ) = 0. 901 <br /> Gust Factor Used in Analysis <br /> G = Lessor Of G1 Or G2 = 0.850 <br /> Main Wind Force Resisting System (MWFRS) Calculations for Solid Sign per Ch 29: <br /> LF = Load Factor based upon ASD Design = 0. 60 <br /> hs = Overall height of structure = 14.500 ft <br /> h = Mean Roof Height above grade = 14.500 ft <br /> Kh = Z < 15 ft [4.572 ml--> (2.01 * (15/zg) ^ (2/Alpha) {Table 26. 10-1}= 0.849 <br /> Kzt = Topographic Factor is 1 since no Topographic feature specified = 1. 0.00 <br /> Kd = Wind Directionality Factor per Table 26. 6-1 = 0. 85 <br /> qh = (0.00256 * Kh * Kzt * Kd * .Ke * V^2) * LF = 13. 41 psf <br /> MWFRS Pressures on Solid Sign per Fig 29.3-1: <br /> R = Reduction factor to account for openings: (1- (1-e) ^1.5) = 1.000 <br /> Rc = Reduction factor for Case C not applicable since s/h <= 0. 8 = 1.000 <br /> As = Gross Area of Sign: B * s = 36. 45 sq. ft <br /> file:///C:/UserstOwner/AppData/Roaming/MecaWind/SelectedAnalysis.html 2021/2/8 <br /> \ Q <br /> U <br />