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Re: amusement structures

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Ralph Kratz wrote:

>>In a message dated 1/4/00 9:13:47 AM, aaron(--nospam--at) writes:
<< they have 
omitted all seismic calculations (we are in seismic zone 3) with a blanket 
statement "wind load governs"  >>

Now there's an approach I've gotta try, save a lot of engineering time!  :)<<

Why not?  It happens all the time here in Arizona and Building Officials 
don't even raise an eyebrow.  No seismic calculations, just the statement, 
"Wind Controls."  "Everyone knows that 'low-rise' structures are controlled 
by wind."  Yet, even in this Seismic Zone 2 area, every masonry walled 
building that I have designed, even one story buildings, the base shear is 
controlled by seismic.  The flexural design of the exterior walls may have 
wind forces controlling, the diaphragm may have wind forces controlling, but 
the base shear is controlled by seismic forces.

A. Roger Turk, P.E.(Structural)
Tucson, Arizona