Is there a Wind load Under a house on Piles 2

[Whoofbang]

For a beach house elevated on timber piles, is there a wind load acting under the house. Is it the same as a flat roof only inverted?

 

[frv]

Yes and Yes. There was a thread on this not too long ago. You should search the archives.

 

[Whoofbang]

Found it. Not sure anyone has a handle on it though.

 

[Whoofbang]

Fema Guide to Residential Coastal Design has it. Vol. II ,Chapter 8 section 8.7.1

 

[cap4000]

I think its uplift forces similar to a overhang or canopy.

 

[Whoofbang]

Here is the FEMA Page (I hope). The only pressures on the floor are +- GCpi, internal pressures. No external uplift or downward force, according to FEMA.