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Comparison 93 vs 98

Comparison 93 vs 98 - MAIN WIND FORCE RESISTING SYSTEMS...

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240e8383fc94cd9c26bcd99341f7c49d42d726d1.xls Exmp1-calc 1 of 14 MAIN WIND FORCE RESISTING SYSTEMS ASCE 7-98 WALL LOADS EVALUATION Enclosed Buildings Only Exposure (6.5.6) Clasification of Building (Table 1-1) Project: FIU - Design of Tall Buildings A Large City Center, 50% buildings H > 70 Ft Building Type Category Building Prof. Prieto-Portar B Urban, suburban Area, wooded areas Low hazard Buildings 1 C Open Terrain, scattered obstructions h < 30 Ft Other 2 Exposure C D Unobstructed areas, Wind coming from over water Substantial hazard to human >300 people 3 Imp. Fact. 1 Essencial facilities 4 V (MPH) 146 (I) Importance Factor (Table 6-1) X (Ft) 177.5 Lateral Resisting System (9.5.3.3) Y (Ft) 88.58 category Type Ct H (Ft) 124 Wind 1 2 3 4 1 Steel Frame 0.035 Lateral resisting System Type 4 V= 85 -100 mph 0.87 1 1.15 1.15 2 Concrete Frame without shearwalls 0.030 V > 100 mph 0.77 1 1.15 1.15 3 Eccentricacly Braced steel frames 0.030 Dynamic Response of Building 4 All others 0.020 Fxx (Hz) 0.200 Fyy (Hz) 0.217 damping (%) 5 Terrain exposure Constants (Table 6-4) Enclosure (Table 6-7) Exposure Alpha Zg (Ft) Z<15 ά b Zmin L e c Classification Gcpi Kd (Direction factor (6.5.4.4) 1 A 5 1500 0.32 0.33 0.30 60 180 0.500 0.45 Open 0 B 7 1200 0.57 0.25 0.45 30 320 0.333 0.30 Part. Enclosed +/- 0.55 Open Building (Y/N) n C 9.5 900 0.85 0.15 0.65 15 500 0.200 0.20 Enclosed +/- 0.18 Partially Enclosed (Y/N) n D 11.5 700 1.03 0.11 0.80 7 650 0.125 0.15 Enclosed Building (Y/N) y C 9.5 900 0.85 0.15 0.65 15 500 0.200 0.20 Topographic factor (6.5.7.2) Gust Effect Factor Calculation for Flexible or Dynamically Sensitive Structures (6.5.8.2) Direction X Y XX YY XX YY 2D Ridge (Y/N) N N Gq 3.4 nh 0.723 0.785 Eq 6-10 N1 0.746 0.809 2D Escarpment (Y/N) N N Gv 3.4 nb 1.035 0.561 Eq 6-9 Rn 0.152 0.146 3D Hill (Y/N) N N 0.6h 74.4 nl 1.730 3.761 Eq 6-8 R 0.896 0.915 Height of Hill/Escarp (Ft) 0 0 z 74.4 Eq 6-11 Rh 0.652 0.631 Eq 6-7 gr 3.787 3.808 Half Hill/Escarp Length (Ft) 0 0 Rb 0.558 0.711 Eq 6-4 Q 0.841 0.867 Hz Distance from crest (Ft) 0 0 Eq 6-12 Vz 157.73 Rl 0.416 0.231 Eq 6-3 Iz 0.175 0.175 Eq 6-5 Lz 588.28 588.28 Eq 6-6 Gf 1.067 1.084 XX YY Gust Effect Factor Calculation for Rigid Structures (6.5.8.1) Wall Pressure Coeficients (Cp) (Fig. 6-3) G 1.07 1.08 (6.5.8) XX YY Wind Direction X Y Kh 1.32 1.32 Eq 6-2 Gf 0.85 0.86 Windward 0.80 0.80 qh (psf) 72.3 72.3 Leeward -0.30 -0.50 X/Y 2.00 Y/X 0.50 Enclosure (Table 6-7) Topographic factor Sidewall -0.70 -0.70 Estimated Fund. Period (sec) 0.74 G C pi 0.18 Direction X Y Building is flexible on X direction -0.18 K1 0.00 0.00 Building is flexible on Y direction K2 1.00 1.00 K3h 0.00 0.00 Kzt 1.00 1.00
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240e8383fc94cd9c26bcd99341f7c49d42d726d1.xls Exmp1-calc 2 of 14 MAIN WIND FORCE RESISTING SYSTEMS ASCE 7-98 WALL LOADS EVALUATION Enclosed Buildings Only Project: FIU - Design of Tall Buildings Building Prof. Prieto-Portar Wind Paralel to X axis P=qGCp-q(GC pi) (Eq 6-15) CASE 1 CASE 2 CASE Floor Z (Ft) Kz Kzt qz (psf) Windward wall (psf) Leeward wall (psf) Side walls (psf) H (Ft) W (Ft) A (Ft2) P (psf) tot F (K) F2x (K) M2x (K-Ft) F4x (K) Roof 133.5 1.34 1.00 73.4 49.7 75.7 -36.2 -10.2 -67.0 -41.0 12.50 27.6 345.00 85.9 29.64 25.93 82.03 19.41 10 121 1.32 1.00 71.9 48.4 74.4 -36.2 -10.2 -67.0 -41.0 6.50 88.58 575.77 84.6 78.35 68.55 216.87 51.32 9 108 1.29 1.00 70.2 46.9 73.0 -36.2 -10.2 -67.0 -41.0 13.00 88.58 1151.54 83.2 95.81 83.83 265.21 62.75 8 95 1.25 1.00 68.3 45.3 71.4 -36.2 -10.2 -67.0 -41.0 13.00 88.58 1151.54 81.6 93.97 82.22 260.11 61.55 7 82 1.21 1.00 66.2 43.6 69.6 -36.2 -10.2 -67.0 -41.0 13.00 88.58 1151.54 79.8 91.89 80.41 254.37 60.19 6 69 1.17 1.00 63.9 41.5 67.6 -36.2 -10.2 -67.0 -41.0 13.00 88.58 1151.54 77.8 89.59 78.39 248.00 58.68 5 56 1.12 1.00 61.1 39.2 65.2 -36.2 -10.2 -67.0 -41.0 13.00 88.58 1151.54 75.4 86.83 75.97 240.35 56.87 4 43 1.06 1.00 57.8 36.4 62.4 -36.2 -10.2 -67.0 -41.0 13.00 88.58 1151.54 72.6 83.60 73.15 231.42 54.76 3 30 0.98 1.00 53.6 32.8 58.8 -36.2 -10.2 -67.0 -41.0 14.50 88.58 1284.41 69.0 88.62 77.55 245.32 58.05 2 14 0.85 1.00 46.3 26.6 52.6 -36.2 -10.2 -67.0 -41.0 15.00 88.58 1328.70 62.8 83.44 73.01 230.98 54.65 1 0 0.85 1.00 46.3 26.6 52.6 -36.2 -10.2 -67.0 -41.0 88.58 0.00
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