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HomeMy WebLinkAboutWind Load Calculation ..�.,' b Broward County Fenestration Voluntary Wind Load Chart* rn Per ASCE 7-10 Method 1,Part 1 and FBC(2017)for Retrofiting in Accordance with Formal Interpreta on#5 a� M For Detached One-and Two family dwellings and Multiple Single-Family Dwellings(Townhouses) with MeanRo i t:5 30 fee �a C Wind 170 mph(3-second gust) / Exposure C** / Kd=0.85 / Kzt=1.0/Pressures are in PSF/Not for use in Coastal(Exposur 'D' re ) j v *Using Allowable Stress Design methodology(P=0.6w) / **Exposure shall be determined according to ASCE 7-10 Section 26.7.3(Exp suLe Categories) 3 LID Effective Mean Roof Height of 15 feet Mean Roof Height of 20 feet Mean Roof-Height of 25 feet Mean Roo4 @ight of 30 feet Wind Location: Zone Zone Zone one Area Gable or Hip 1 23 1 2 3 1 2 3 1 2 3 Roof (ftZ) + I - 10 Gable/Hip 16.0 -37.8 16.0 -63.4 16.0 95.4 16.3 40.2 16.3 67.4 16.3 -101.4 17.1 -42.1 17.1 -70.6 17.1 -106. . -43.7 17.8 -73.4 17.8 -110.4 20Roof 16.0 -36.8 16.0 -56.7 16.0 -79.1 16.0 -39.1 16.0 -60.2 16.0 -84.0 16.0 -41.0 16.0- -63.1 16.0 -88.0 5.7 11 -42.6 16.7 -65.6 16.7 -91.5 50 05 70 16.0 -35.6 16.0 -47.7 16.0 -57.4 16.0 -37.8 16.0 -50.7 16.0 -61.0 16.0 -39.6 16.0 -53.2 16.0 -63.9 1 -41.1 16.0 -55.2 16.0 -66.4 100 (0 to 1.5:12) 16.0 -34.6 16.0 -41.0 16.0 -41.0 16.0 -36.8 16.0 -43.6 16.0 -43.6 16.0 -38.5 16.0 -45.7 16.0 -45.7 -40.0 16.0 -47.4 16.0 -47.4 10 Gable/Hip 21.8 -34.6 21.8 -60.2 21.8 -89.0 23.1 -36.8 23.1 -64.0 23.1 -94.6 24.3 -38.5 24.3 -67.1 24.3 -99.2 25. -40.0 25.2 -69.7 25.2 -103.0 20 Roof*** 19.9 -33.6 19.9 -55.4 19.9 -83.3 21.1 -35.7 21.1 -58.9 21.1 -88.5 22.1 -37.4 22.1 -61.7 22ff,32 23.0 -38.9 23.0 -64.1 23.0 -96.3 50 70<e!5 270 17.3 -32.4 17.3 -49.0 17.3 -75.6 18.4 -34.4 18.4 -52.1 18.4 -80.3 19.3 -36.0 19.3 -54.6 190.0 -37.4 20.0 -56.7 20.0 -87.5 100 (1.5 to 6:12) 16.0 -31.4 16.0 -44.2 16.0 -69.8 16.3 -33.3 16.3 -47.0 16.3 -74.2 17.1 -35.0 17.1 -49.2 1717.8 -36.3 17.8 -51.1 17.8 -80.8 10 Gable Roof 34.6 -37.8 34.6 -44.2 34.6 -44.2 36.8 -40.2 36.8 -47.0 36.8 -47.0 38.5 -42.1 38.5 -49.2 3840.0 -43.7 40.0 -51.1 40.0 -51.1 20 27°<65 45° 33.6 -35.9 33.6 -42.3 33.6 -42.3 35.7 -38.1 35.7 -44.9 35.7 -44.9 37.4 -39.9 37.4 -47.1 3738.9 -41.5 38.9 -48.9 38.9 -48.9 50 (6 to 12:12) 32.4 -33.3 32.4 -39.7 32.4 -397 34.4 -35.4 34.4 -42.2 34.4 -42.2 36.0 -37.1 36.0 44.2 3637.4 -38.6 37.4 -46.0 37.4 -46.0 100 31.4 -31.4 31.4 -37.8 31.4 -37.8 33.3 -33.3 33.3 -40.2 33.3 -40.2 35.0 -35.0 35.0 -42.1 3536.3 -36.3 36.3 -43.7 36.3 1 -43.7 ***For Hip Roofs with angle>7 degrees(1.5:12)and<_25 degrees(5.5:12),Zone 3 shall be treated as Zone 2(Figure 30.4-2B,Note 7,p.337) Effective Mean Roof Height of 15 feet Mean Roof Height of 20 feet Mean Roof Height of 25 feet Mean Roof Height of 30 feet Wind Location Zone Zone Zone Zone Area 4 5 4 5 4 5 4 5 (ft) + - + - + - + - + - + - + - + - 10 37.8 -41.0 37.8 -50.6 140.2 -43.6 40.2 -53.8 42.1 -45.7 42.1 -56.4 43.7 -47.4 43.7 -58.6 L20 36.1 -39.3 36.1 -47.2 38.3 -41.7 38.3 -50.1 40.2 -43.8 40.2 -52.6 41.8 -45.5 41.8 -54.6 Wall 33.8 -37.0 33.8 -42.7 36.0 -39.4 36.0 -45.4 37.7 -41.3 37.7 -47.5 39.2 -42.9 39.2 -49.4 32.1 -35.3 32.1 -39.3 34.1 -37.5 34.1 -41.7 35.8 -39.4 35.8 -43.8 37.2 -40.9 37.2 -45.5 28.2 -31.4 28.2 -31.4 29.9 -33.3 29.9 33.3 31.4 35.0 31.4 -35.0 32.6 36.3 32.6 -36.3 Garage Door Wind Loads y �:a a}a--*1. ,�• a E , for a Building with 30-foot Mean Roof Height a 3�1 2_i_ .2_`t3 a' Exposure C Tables 1609.7(1)&(2),and Section 1609.3.1 ,. - h, Effective Wind Area Wind Load 2,) 1 1 ;? 5:; �4 " Fi, 2;;'1 ; 5.;; 4 , Roof Angle , , , , , ,5. Width Height + - , r• 84. 8 35.2 -39.8 0-10 10 10 34.1 -38.2 Hip Roof' degrees 14 14 32.3 -36.1 For Effective Wind Areas between those given,values may be interpolated.Otherwise use the value associated with the lower Effective Wind Area. 9 7 >10 38.4 -43.4 End Zone(a)shall be the smaller of 10%of Least Hor.Dist.or 40%of Mean Roof Height('h'),but not less than 4%of Least Hor.Dist.or 3 ft. 16 7 degrees 36.8 -41.0 Identify the zone per the figure or information by others.Any questionable zone is to be considered the more critical zone. Design is based on the 3-second gust(wind velocity)for Risk Category II(general residential&commercial construction)per FBC 1620.2 Broward.These tables not for use with essential facilities or assembly occupancies. Page 2 of 2 FBC 6th Edition (2017) Formal Interpretation#5 Effective date; January 1, 2018