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UBC/IBC Question

UBC/IBC Question

UBC/IBC Question

(OP)
Is there an IBC equivalent (Ss, S1) for UBC Zone 4?  Or are the two completely incompatible?  Thanks,

ER

RE: UBC/IBC Question

I believe they are incompatible.  The UBC uses different information and different maps.  It isn't as simple as just changing the names of the variables.

RE: UBC/IBC Question

Try looking at the following... thread507-126960: Seismic zone 3 and the IBC

They aren't really compatible methods but a while back I tried to work out an equivalent.  Note that most comments in the thread did not support what I was trying to do.  What I wanted was to develop a rule-of-thumb as a general guideline.  It required that you make several assumptions and go partially through the calculations.

The assumptions made regarding site class and the value of R which impact the final answer greatly.  Also you need to be careful with strength versus allowable stress which is a factor of 1.4

Regards,
-Mike

RE: UBC/IBC Question

I failed to mention that you still need to design per the applicable code.

-Mike

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