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RE: Quick/Easy Question for Seismic List

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Mike,

The IBC is pretty clear as is the 1997 NEHRP.  They show the units when the
variable is defined.

Regards,
Harold Sprague

> -----Original Message-----
> From:	Ritter, Mike [SMTP:mritter(--nospam--at)lgt.lg.com]
> Sent:	Wednesday, March 22, 2000 2:18 PM
> To:	'seaint(--nospam--at)seaint.org'
> Subject:	Quick/Easy Question for Seismic List
> 
> Colleagues,
> 
> Please help me with a quick question.  I am looking at some calcs
> prepared by another engineer, who calculated the allowable story drift
> for a three story building from BOCA and ran the number based on story
> height in inches.  In other words, the building height is 74', but he
> used 888 inches.  This gives the allowable story drift to be
> 0.02(888")=17.76".  
> 
> I've always used the story height in feet, which would give an allowable
> drift of about 1.48".  I was going to show my colleage the code section
> which says story height is in feet, but could not find it in BOCA, UBC,
> SBC, Farzad Naiem, or any other text books.  Does anybody have a
> reference section showing that the story height, by definition, should
> be in feet?  I know it must be there, but I'm in a rush and can't find
> it.  
> 
> Thanks again for the help!
> 
> Michael Ritter, PE
>