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HomeMy WebLinkAboutWind Load CalculationsRAMM5 €NGIN€€RING, INC.
2100 W 76 ST. #311 , HIALEAH , FLORIDA, 33016 FLORIDA BUILDING CODE 2020
Robert S. Monsour, P.E. Fl# 11955 / 0006024 ASCE 7-16 WIND CODE
DESIGN WIND LOADS (LBS/SOFT) Kd= .85
FOR 170 MPH WIND ZONE
Interior & Exterior Zones (4&5 -Walls) Positive Pressures
Exposure C For the 170 mph Wind Zone
Effective Wind Area (or, Tributary Area) in Square Feet
10 20 30 40 50 60
0 .95 0 .92 0 .89 0 .88
36 .3 35.3 34.6 34 .1
20 40 .3 38 .5 37.4 36.6 35 .6
25 42 .1 40 .2 39 .1 38 .3
30 43 .8 41 .9 40.7 39 .9
40 46 .5 44.4 43.2 42.3
50 48 .8 46 .6 45 .3
60 50 .6 48 .3 46.9
~
Interior Zone (4 -Walls) Negative Pressures
Exposure C For the 170 mph W ir:1d ZoQe
Effective Wind Area (01'., Tributary Area) in Square Feet
Height 10 20 IA "-30\ ,40 50 60
(Maxim.um) -1 10 -1 .05 ◄ -1 .02/ \-0 .99 -0.98 -0 .96
(15 J {-41 .3J -39 /5-... V-38 .5, -37.8 -37 .3 -36 .8
20 -43.7 -41 .9, l ~0.,,8 -40.1 -39.5 -39 .0
25 -45 .6 ✓-43.7 ~2:6 -41.8 -41 .2 -40.7
30 -47 .6 _, ....._ ~5.,6 ,44.4 -43 .6 -43.0 -42 .5
40 -50 .5 '-"'-48~4 -47 .1 -46 .3 -45.6 -45.1
50 -,52~ "'c-50:JV' -49.4 -48 .5 -47 .8 -47 .2
60 -t 5413'-~2 .6 -51 .2 -50 .3 -49 .6 -49.0
-
/(" '~
Exterior Zones (5 -Wa ~)~egative Pressures
Exposure G. For the 170 mph Wind Zone
-"\ Effective Wind Area (or, Tributary Area) in Square Feet ~ 10 20 30 40 50 60
(Ma i ~um) -Y -1.40 -1 .29 -1 .23 -1 .19 -1 .15 -1 .13
~ 61~0 (-50.9} -47 .5 -45 .5 -44 .1 -43 .0 -42.1
"''20 --ti3~~ -50 .3 -48 .2 -46.7 -45 .5 -44 .5
25 -56 .3 -52 .5 -50.3 -48.7 -47.5 -46 .5
30 -58 .7 -54 .8 -52.4 -50.8 -49.5 -48 .5 ·
40 -62 .3 -58.1 -55 .7 -53.9 -52.6 -51.5
50 -65 .3 -60.9 -58.3 -56 .5 -55 .1 -53 .9 --
60 -67 .7 -63 .1 -60 .5 -58 .6 -57 .1--55 .9
~
0 I NOTE. AN 81/o REDUCTION OF THE LOADS SHOWN ABOVE MAY BE TAKEN FOR FLAT R,0O &. .__,
Length of End Zone (a): 10% of least horizontal dimension or .4 h, whichever is smaller,
but not less than 4% of least horizontal dimension or 3 ft. (h = mean roof height ·rt feet}.
TIIF.SE TABLES ARE NOT TO BE REPRODUCED IN WHOLE OR IN PART
WITHOUT WRITTEN PERMISSCON BY RAMMS ENGINEERING. ALSO, TIIF.SE
TABLES ARE INVALID UNLESS SIGNED WITH BLUE INK AND SEALED BY
ROBERT MONSOUR.
I