Need a book? Engineering books recommendations...

Return to index: [Subject] [Thread] [Date] [Author]

RE: Deflection Criteria

[Subject Prev][Subject Next][Thread Prev][Thread Next]

If you want a code clarification look at Table 1604.3 footnote ‘i’ in the 2003 IBC.



-----Original Message-----
From: Jeff Coronado [mailto:jcse(--nospam--at)]
Sent: Tuesday, March 28, 2006 1:02 PM
Subject: Re: Deflection Criteria


Hi Bhairavi,


No further clarification in the Building Code is needed.  The additional provisions now in the IBC are redundant.


The deflected shape of a cantilever is that of half of an inverted simply supported beam.  Since the intent is to allow for a deflection of L/240 for the simply supported condition, that deflection equates to L/120 of the half span of the simply supported beam, or for the full span of a cantilever beam, whichever condition you may have.


Good luck,


Jeff Coronado, S.E.

West Covina, CA

----- Original Message -----

From: Bhairavi

Sent: Thursday, March 23, 2006 5:09 PM

Subject: Deflection Criteria


As to the code section, the live load + dead load deflection is L/240. Can anybody out there get me a reason to justify I can use 2L/240 for a cantilever beam deflection? Is it specified somewhere in the UBC 97 building code or anywhere ? Any comments on this would be highly appreciated.