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    188宝金博页面版: 美标-2 雪压-ASCE 7&UBC & CBC-中英文EXL

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    内容提示： PROJECT : PAGE : CLIENT : DESIGN BY : JOB NO. : DATE : REVIEW BY : 数据输入和设计总结丨INPUT DATA & DESIGN SUMMARY基本雪压丨BASIC GROUND SNOW LOAD-ASCE Sec. 7.2 P g = 10 (ASCE page 56) P f, roof = 8.40雪暴露系数丨SNOW EXPOSURE FACTOR C e = 1 (Tab. 7-2, pg 92) P f, overhang = 33.60热系数丨THERMAL FACTOR (0.85 , 1.0 , 1.1 , 1.2) C t = 1.2 (Tab. 7-3, pg 93) P f, valley = 33.60重要系数丨IMPORTANCE FACTOR I = 0.8 (Tab. 7-4, pg 93，Tab. 1.5-1, pg 5) P f, parapet = 38.06屋面坡度丨ROOF SLOPE 3 /...

    文档格式：XLS | 页数：5 | 浏览次数：41 | 上传日期：2025-06-29 20:22:16 | 文档星级：
    PROJECT : PAGE : CLIENT : DESIGN BY : JOB NO. : DATE : REVIEW BY : 数据输入和设计总结丨INPUT DATA & DESIGN SUMMARY基本雪压丨BASIC GROUND SNOW LOAD-ASCE Sec. 7.2 P g = 10 (ASCE page 56) P f, roof = 8.40雪暴露系数丨SNOW EXPOSURE FACTOR C e = 1 (Tab. 7-2, pg 92) P f, overhang = 33.60热系数丨THERMAL FACTOR (0.85 , 1.0 , 1.1 , 1.2) C t = 1.2 (Tab. 7-3, pg 93) P f, valley = 33.60重要系数丨IMPORTANCE FACTOR I = 0.8 (Tab. 7-4, pg 93，Tab. 1.5-1, pg 5) P f, parapet = 38.06屋面坡度丨ROOF SLOPE 3 / 12 W d = 5.38胸墙高度（漂角高度）丨PARAPET HEIGHT (DRIFT CORNER HEIGHT) h r = 4 ft, see fig. below顶板逆风的长度丨LENGTH OF THE ROOF UPWIND OF THE DRIFT L u = 35 ft, see fig. below P 1 = 20.00受阻滑面丨OBSTRUCTED SLIPPERY SURFACE (Sec. 7.4.0, pg 81) ? (1=Yes, 0=No) 0 Unobstructed P 2 = 15.75P 3 = 4.73ANALYSIS P 4 = 28.63FLAT SNOW LOADS (Sec 7.3, pg 81) x = 6.21P f = 0.7C e C t I P g = 16.80 psfWhere a roof = 18.40W = 17.5 ftP f, min = 0.00 psf, (Sec. 7.3.4, pg 81)ROOF SNOW LOADS (Sec. 7.4, pg 81)P s = C s P f = 15.75 psf, (Eq.7-2)Where C s = 0.938, Derived from Fig 7-2, page 86, as following tableC t 1.1 1.2Unobstructed C s,1 C s,3 C s,5Obstructed C s,2 C s,4 C s,6C s,1 = MIN [ (70 - a) / 65, 1.0] , Fig. 7-2a dash lineC s,2 = MIN [ (70 - a) / 40, 1.0] , Fig. 7-2a solid lineC s,3 = MIN [ (70 - a) / 60, 1.0] , Fig. 7-2b dash lineC s,4 = MIN [ (70 - a) / 32.5, 1.0] , Fig. 7-2b solid lineC s,5 = MIN [ (70 - a) / 55, 1.0] , Fig. 7-2c dash lineC s,6 = MIN [ (70 - a) / 26, 1.0] , Fig. 7-2c solid lineSNOW LOADS AT OVERHANG, VALLEY, AND PARAPET CORNERP f, overhang = 2 P f = 33.60 psf, (Sec.7.4.5, pg 82)P f, valley = C v P f = 33.60 psf, (Sec.7.6.3, pg 82)Where C v = 2 / C e = 2.00 , (Fig. 7-6, pg 90)P f, parapet = C d P s = MIN[g(h d + h b ), gh r ]= 38.06 psf, (Sec.7.7.1, pg 83)Where g = MIN(0.13P g + 14, 30) = 16.60 pcf, (7-3)h b = P s / g = 0.95 ft, (Sec. 7.1)h c = h r - h b = 3.05 ft, (Fig. 7.8)h c / h b = 3.22 > 0.2, (Sec.7.7.1)(Drift load need be considered)h d = 0.75 [0.43(L u ) 1/3 (P g + 10) 1/4 - 1.5] = 1.34 ft, (Sec.7.8 & Fig.7-9)C d = 2.42 , (see fig. right) 4h d = 5.38 ft, for h d <h c 4h d 2 / h c = N/A ft, for h d >h c(Sec.7.7.1, pg 83)W d,max = 8 h c = 24.41 ftROOF UNBALANCED SNOW LOADSP surcharge = 0.00 psf, (Sec. 7.10, pg 83)P 1 = P surcharge + I P g = 20.00 psf, (unbalanced load, Fig 7-5)P 2 = (P surcharge + P s) = 15.75 psf, (unbalanced load, Fig 7-5)P 3 = 0.3 P 2 = 4.73 psf, (unbalanced load, Fig 7-5)P 4 = P 2 + h d g / (1 / Tan a roof ) 0.5 = 28.63 psfx = (8 / 3) h d (1 / Tan a roof ) 0.5 = 6.21 ftNote : Where flat roof snow loads exceed 30 psf, the seismic dead load shall include 20% design snow load. (ASCE 7-05 Sec. 12.7.2.4)雪压分析丨Snow Load Analysis-ASCE 7-22 / IBC 20210.85 or 1.0W d = {

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