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EBF example problem (easy for morning lateral)


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#1 McEngr

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Posted 22 December 2011 - 06:58 PM

I decided to make up a morning lateral problem for an ECBF:

A W18x50 link beam has been deemed adequate for an eccentrically braced frame. What link length is required to keep the beam link controlled by shear yielding.

#2 Rhoadies

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Posted 04 March 2012 - 03:55 AM

I'll give this a go...





The answer should most nearly be 4'-0". Finding e=1.6Mp/Vp. Let me know if this is way off base. I haven't looked much at the EBF systems yet.

#3 McEngr

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Posted 23 March 2012 - 01:55 PM

Rhoadies,

Sorry for the late reply. The answer is 45" as can be seen in table 3-1 of the seismic provisions.




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