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CORNER 3 *3.330 5.420 18.05 No 30.4-2B 0.449 -1.572 11.27 -31.41 Area = Span Length x Effective Width 1/3 Rule = Effective width need not be less than 1/3 of the span length. GCp = External Pressure Coefficients taken from Figures 30.4-1 through 30.4-7 p = Wind Pressure: qh*(GCp - GCpi) [Eqn 30.4-1]* *Per Para 30.2.2 the Minimum Pressure for C&C is 9.60 psf [0.460 kPa] (Includes LF) For hip roofs with 7 Deg < Theta <= 27 Deg, edge strip and ridge press apply to each hip Per Fig 30.4-2B Note 6, Hip roofs with <= 25 Deg, Zone 3 shall be treated as Zone 2 I Components And Cladding (C&C) Calculations per Ch 30 Part 1: (End 2) Zh = Shall not be less than 30 ft in Exp B [Table 30.3-1 Note 1] = 30.000 ft Kh = Since 15 ft [4.572 m] < Zh < Zg --> 2.01 * (Zh/zg)^(2/Alpha) = 0.701 Kzt = Topographic Factor is 1 since no Topographic feature specified = 1.000 Kd = Wind Directionality Factor per Table 26.6-1 = 0.85 GCPi = Ref Table 26.11-1 for Enclosed Building = +/-0.18 LF = Load Factor based upon ASD Design = 0.60 qh = (0.00256 * Kh * Kzt * Kd * V^2) * LF = 17.93 psf LHD = Least Horizontal Dimension: Min(B, L) = 32.000 ft al = Min(O.1 * LHD, 0.4 * h = 3.200 ft a = Max(al, 0.04 * LHD, 3 ft [0.9 m]) = 3.200 £t Wind Pressures for C&C Ch 30 Pt 1 (End 2) All wind pressures include a load factor of 0.6 Description Zone Width Span Area 1/3 Ref GCp GCp p p Rule Fig Max Min Max Min ft ft ft sq ft psf psf ----------- ---- ----- ----- ----- ---- ------- ----- ------ ----- ------ FIELD 1 3.330 5.420 18.05 No 30.4-2B O.A49 -0.874 11.27 -18.90 PERIMETER 2 3.330 5.420 18.05 No 30.4-2B 0.449 -1.572 11.27 -31.41 CORNER 3 3.330 5.420 18.05 No 30.4-2B 0.449 -2.446 11.27 -47.08 Area = Span Length x Effective Width 1/3 Rule = Effective width need not be less than 1/3 of the span length GCp = External Pressure Coefficients taken from Figures 30.4-1 through, 30.4-7 p = Wind Pressure: qh*(GCp_- GCpi) [Eqn 30.4-1]* *Per Para 30.2.2 the Minimum Pressure for C&C is 9.60 psf [0.460 kPa] (Includes LF) I I