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HomeMy WebLinkAboutWind Load Calculation r c n c_ rD 3> o Z n 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 Interpretation#5 C NZ M For Detached One-and Two family dwellings and Multiple Single-Family Dwellings(Townhouses) with Mean Roof Height<-30 feet m Wind 170 mph(3-second gust) / Exposure C** / Kd=0.85 / Kzt=1.0/Pressures are in PSF/Not for use in Coastal(Exposure'D'areas) *Using Allowable Stress Design methodology(P=0.6w) / **Exposure shall be determined according to ASCE 7-10 Section 26.7.3(Exposure Categories) 0 Effective Mean Roof Height of 15 feet Mean Roof Height of 20 feet Mean Roof Height of 25 feet Mean Roof Wind Location: Gable or Hip Zone Zone Zone Zone Area 1 2 3 1 2 3 1 2 3 1 2 3 Roof oof) + - + - + - + - + I - + - + - + - + - + - + - + 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 -106.3 17.8 -43.7 17.8 -73.4 17.8 -110.4 20 Roof 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 16.7 -42.6 16.7 -65.6 16.7 -91.5 50 9:5 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 16.0 -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 16.0 736.8 16.0 -43.6 16.0 -43.6 16.0 -38.5 16.0 -45.7 16.0 -45.7 16.0 -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 25.2 -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 22.1 -92.7 23.0 -38.9 23.0 -64.1 23.0 -96.3 50 70<9:5 270 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 19.3 -84.2 20.0 -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 1 16.3 -47.0 16.3 -74.2 17.1 -35.0 17.1 -49.2 17.1 -77.8 17.8 -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 g .0 38.5 -42.1 38.5 -49.2 38.5 -49.2 40.0 -43.7 40.0 -51.1 40.0 -51.1 20 270<0:5 450 33.6 -35.9 33.6 -42.3 33.6 -42.3 35.7 -38.1 35.7 -44.9 .9 37,4 -39.9 37.4 -47.1 37.4 -47.1 38.9 -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 -39.7 34.4 -35.4 34.4 -42.2 .2 36.0 -37.1 36.0 -44.2 36.0 -44.2 37.4 -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 .2 35.0 -35.0 1 35.0 -42.1 1 35.0 -42.1 36.3 -36.3 1 36.3 1 -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 ft2 + - + - + - + - + - + - + - + - W2O 37.8 -41.0 37.8 -50-6 40.2 -43.6 40.2 -53.8 42.1 -45.7 42.1 -56.4 43.7 -47.4 43.7 -58.6 -4 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 L29.9 -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 -33.3 29.9 33.3 1 31.4 35.031.4 -35.0 32.6 -36.3 1 32.6 36.3 Garage Door Wind Loads for a Building with 30-foot Mean Roof Height Exposure C Tables 1609.7(1)&(2),and Section 1609,3.1 ;,r „ ' '{ r, i _ ' Effective Wind Area Wind Load 2 �� 1 61 1 2 ; . Roof Angle i:� �i ) �' a4 .. Width Height + 0-10 10 10 de rees 34.1 38.2 ''' Galle Roof' Hlp hoof i 14 14 g 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