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city
wind speed (mph) if 'other'
wind speed used (mph)
exposure
roof height (ft)
Importance
Boston, MA
Chicago, IL
Little Rock, AR
Houston, TX
Ithaca, NY
Los Angeles, CA
Miami, FL
New York, NY
Philadelphia, PA
Phoenix, AZ
Portland, ME
Other
B
C
D
I=low hazard
II=normal
III=high hazard
IV=essential
height above grade (ft)
windward pressure (psf)
leeward pressure (psf)
combined pressure (psf)
Kd
Kt
1
0.85
L (ft)
B (ft)
""
Checks:
errors:
wind speed > 0
roof height > 0
roof height <= 500
L > 0
B > 0
1 <= Kt <= 3
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