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Home My WebLink AboutWind Load Calculation RAMMS CNGINCCRING, INC. 2100 W 76 ST. #311, HIALEAH, FLORIDA, 33016 FLORIDA BUILDING CODE 2017 Robert S. Monsour, P.E. FI # 11955 / 0006024 ASCE 7-10 WIND CODE DESIGN WIND LOADS (LBS/SQFT) Kd = .85 FOR 170 MPH WIND ZONE Interior & Exterior Zones (4&5 - Walls) Positive Pressures Exposure D For the 170 mph Wind Zone CATEGORY 2 BLDG. Effective Wind Area (or, Tributary Area) in Square Feet Height 10 20 30 40 50 60 Maximum 1.00 0.95 0.92 0.89 0.88 0.86 15 46.1 44.0 42.8 41.9 41 .3 40.7 20 48.3 46.1 44.9 44.0 43.3 42.7 25 50.1 47.9 46.5 45.6 44.9 44.3 30 51.9 49.6 48.2 47.2 46.5 45.9 40 54.6 52.1 50.7 49.7 48.9 48.2 50 56.8 54.3 52.8 51.7 50.9 50.2 60 58.6 56.0 54.4 53.3 52.5 51.8 terior Zone (4 - Walls) Negative Pressures ,Sixposure D For the 170 mph Wind Zone CATEGORY 2 BLDG. Q M E Effective Wind Area (or, Tributary Area) in Square Feet j Height 10 20 30 40 50 60 u © Maximum -1.10 -1.05 -1.02 -0.99 -0.98 -0.96 U 15 -50.0 -47.9 -46.7 -45.8 -45.2 -44.6 z 20 -52.4 -50.2 -49.0 -48.1 -47.4 -46.8 25 -54.4 -52.1 -50.8 -49.8 -49.1 -48.5 t 30 -56.3 -54.0 -52.6 -51 .6 -50.9 -50.3 40 -59.2 -56.7 -55.3 -54.3 -53.5 -52.9 50 -61.6 -59.1 -57.6 -56.5 -55.7 -55.0 60 -63.6 -60.9 -59.4 -58.3 -57.4 -56.8 Exterior Zones (5 - Walls) Negative Pressures >,- Exposure D For the 170 mph Wind Zone CATEGORY 2 BLDG. Effective Wind Area (or, Tributary Area) in Square Feet �•., Height 10 20 30 40 50 60 i Maximum -1.40 -1.29 -1.23 -1.19 -1.15 -1.13 d 15 -61.7 -57.6 -55.1 -53.4 -52.1 -51.0 20 -64.7 -60.3 -57.8 -56.0 -54.6 -53.4 25 -67.1 -62.6 -59.9 -58.1 -56.6 -55.4 30 -69.5 -64.8 -62.1 -60.1 -58.6 -57.4 40 -73.1 -68.2 -65.3 -63.2 -61.7 -60.4 50 -76.1 -71.0 -68.0 -65.8 -64.2 -62.8 60 -78.5 -73.2 -70.1 -67.9 -66.2 -64.8 NOTE: AN 8% REDUCTION OF THE LOADS SHOWN ABOVE MAY BE TAKEN FOR FLAT ROOFS. Length of End Zone (a): 10% of least horizontal dimension or .4 h, whichever is s but not less than 4% of least horizontal dimension or 3 ft. (h = mean roof height i t THESE TABLES ARE NOT TO BE REPRODUCED IN WHOLE OR IN PART WITHOUT WRITTEN PERMISSION BY RAMMS ENGINEERING.ALSO,THESE TABLES ARE INVALID UNLESS SIGNED WITH BLUE INK AND SEALED BY t ROBERT MONSOUR.