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ASCE 7-16 Wind Forces Chpt 28, Pt2 & Chpt 30, Pt2 <br />DMAC Engineering, Inc.Lic. # : KW-06010297 <br />DESCRIPTION:WIND <br />Software copyright ENERCALC, INC. 1983-2020, Build:12.20.8.24 <br />File: 1519.ec6 <br />Calculations per ASCE 7-16General Design Values <br />110.0 <br />Roof Rise:Run Ratio 4:12 <br />Exposure B <br />16.0 <br />16.0 <br />10.0 <br />Flat/Hip/Gable Roof <br />psf <br />Topographic Factor Kzt per 26.8 1.00 <br />31.0LHD : Least Horizontal Dimension ft <br />a = max (0.04 * LHD, 3, min(0.10 * LHD, 0.4*MRH))3.10 ft <br />Effective Wind Area of Component & Cladding <br />V : Basic Wind Speed per Sect 26.5-1 or 2 mph <br />Roof pitch for cladding pressure <br />ft^2 <br />Occupancy per Table 1.5-1 II All Buildings and other structures except those listed <br />Exposure Category per 26.7 <br />MRH : Mean Roof Height ft <br />"Lambda" is interpolated between height tablular values. <br />Lambda MWFRS: per Figure 26.8-1 1.00 <br />User specified minimum design pressure <br />0.83Lambda Componant & Cladding : per Figure 30.4-1 <br />Main Force Resisting System Values Component & Cladding Values <br />Design Wind Pressures <br />Horizontal Pressures . . . <br />Zone: A =26.60 psf Zone: C =17.70 psf <br />Zone: B =-16.00 psf Zone: D =-16.00 psf <br />Vertical Pressures . . . <br />Zone: E =-23.10 psf Zone: G =-16.00 psf <br />Zone: F =-16.00 psf Zone: H =-16.00 psf <br />Overhangs . . . <br />Zone: Eoh =-32.30 psf Zone: Goh =-25.30 psf <br />ASCE 7-16 Section 28.5.4 Minimum Design Wind Loads requires that the load effects of the design wind pressures from <br />Section 28.5.3 shall not be less than a minimum load defined by assuming the pressures, ps, for zones A and C equal to +16 <br />psf, Zones B and D equal to +8 psf, while assuming ps for Zones E, F, G, and H are equal to 0 psf. <br />Design Wind Pressure = Lambda * Kzt * Ps30 per Eq 30.4-1Component & Cladding Design Wind Pressures <br />Zone 1 <br />Positive <br />16.000 psf <br />Negative <br />-28.940 <br />psf <br />Zone 2 16.000 psf-38.114 <br />psf <br />Zone 3 16.000 <br />psf <br />-51.958 <br />psf <br />Wall Zone 4 :******psf <br />Wall Zone 5 :***psf*** <br />psf <br />-32.109 <br />psf <br />-43.535psf <br />Roof Pressures Negative <br />psf <br />Wall Pressures <br />Overhang Pressures <br />Zone 3e <br />Zone 3r <br />Zone 2e <br />Zone 2n <br />Zone 2r <br />Zone 1'psf <br />psf <br />psf <br />psf <br />psf <br />psf <br />psf <br />psf <br />Zone 1 <br />Zone 2 <br />Zone 3 <br />Zone 3e <br />Zone 3r <br />Zone 2e <br />Zone 2n <br />Zone 2r <br />Zone 1'16.000 -16.597 <br />****** <br />****** <br />****** <br />****** <br />'*** : There is no value in Figure 30.4-1 Tabular Values <br />****** <br />*** <br />*** <br />*** <br />*** <br />*** <br />*** <br />***