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i MecaWind v2323 Software Developer: Meca Enterprises Inc., www.meca.biz, Copyright n 2018 Calculations Prepared by: Calculations Prepared For: JDG CONSULTING ENGINEER Client: GAMBOCORTO D. RESIDENCE 17440 NE 4TH AVE. Project #: 19-085 N. MIAMI BEACH, FLORIDA, 33162 Location: PASCO COUNTY Date: Apr 26, 2019 Designer: JOSE D. GARCIA FileLocation Basic Wind Parameters Wind Load Standard = ASCE 7-10 Exposure Category = B Wind Design Speed = 140.0 mph Risk Category = II Structure Type = Other Other Structure Type = Freestanding Wall General Wind Settings = ASCE 7-10 Wind Parameters = Incl_LF = Include ASD Load Factor of 0.6 in Pressures = True DynType = Dynamic Type of Structure = Rigid NF = Natural Frequency of Structure (Mode 1) = 1.000 Hz NF = Natural Frequency of Structure = 1.000 Hz Alt = Altitude (Ground Elevation) above Sea Level = 0.000 ft Bdist = Base Elevation of Structure = 0.000 ft GenElev = Specify the Elevations For Wind Pressures = Mean Roof Ht Reacs = Show the Base Reactions in the output = False MWFRSType = MWFRS Method Selected = No Analysis I Topographic Factor per Fig 26.8-1 Topo = Topographic Feature = None Kzt = Topographic Factor = 1.000 Freestanding Wall Inputs : Freestanding Wall = h : Height to Top of Wall = 13.000 ft B Horizontal Width of Wall = 4.000 ft Lr: Dimension of return corner= 3.000 ft s Vertical Height of Wall = 0.130 ft e : Solidity Ratio = 1.000 Exposure Constants per Table 26.9-1: Alpha: Const from Table 26.9-1= 7.000 Zg: Const from Table 26.9-1= 1200.000 ft At: Const from Table 26.9-1= 0.143 Bt: Const from Table 26.9-1= 0.840 Am: Const from Table 26.9-1= 0.250 Bm: Const from Table 26.9-1= 0.450 C: Const from Table 26.9-1= 0.300 Eps: Const from Table 26.9-1= 0.333 Gust Factor Calculation: Gust Factor Category I Rigid Structures - Simplified Method G1 = For Rigid Structures (Nat. Freq.>l Hz) use 0.85 = 0.85 Gust Factor Category II Rigid Structures - Complete Analysis Zm = 0.6 * Ht = 30.000 ft Izm = Cc * (33 / Zm) 0.167 = 0.305 Lzm = L * (Zm / 33) Epsilon = 309.993 Q = (1 / (1 + 0.63 * ((B + Ht) / Lzm)^0.63))^0.5 = 0.960 G2 = 0.925*((1+1.7*lzm*3.4*Q)/(1+1.7*3.4*lzm)) = 0.901 Gust Factor Used in Analysis G = Lessor Of G1 Or G2 = 0.850 Main Wind Force Resisting System (MWFRS) Calculations for Freestanding Wall per Ch 29: LF = Load Factor based upon ASD Design = 0.60 hs = Overall height of structure = 13.000 ft Kz = Since z<15 ft (4.572 m] --> 2.01 * (15/zg)^(2/Alpha) = 0.575 Kzt = Topographic Factor is 1 since no Topographic feature specified = 1.000 Kd = Wind Directionality Factor per Table 26.6-1 = 0.85 qh = (0.00256 * Kh * Kzt * Kd * V^2) * LF = 14.71 psf MWFRS Pressures on Freestanding Wall per Fig 29.4-1: R = Reduction factor to account for openings: (1-(1-e)^1.5) = 1.000 Rc = Reduction factor for Case C not applicable since s/h <= 0.8 = 1.000 As = Gross Area of Wall: B * s = 0.52 sq ft B/s = Aspect Ratio: B / s I = 30.769 s/h = Clearance Ratio: s / h = 0.010 Cf = Net Force Coefficient for Case A and B per Fig 29.4-1 = 1.900 Case A: Resultant force acts normal to face through geometric center F = Design Wind force: qh * G * Cf * As * R = 12 lb Case B: Resultant force acts normal to face at a distance from the geometric center toward the windward edge equal to 0.2 times the average width Dx = Force Offset from Center toward windward edge: 0.2 * B = 0.800 ft