I was told by the Belvedere, CA building official to use exposure D.
Belvedere is located well within the San Francisco Bay. It did not seem to
me to represent the highest wind exposure, however, it was about 100 yards
from the water on a steep hill. As it turned out seismic still governed.
|~|Exposure D is clearly defined with regards to large open bodies of water.
|~|Large open bodies of sand where not considered by the code writers I am
|~|sure, and I can see your analogy. If you do not feel that the exposure C
|~|80mph forces are appropriate, increase the wind speed. There
|~|are areas of
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