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Re: Expansion Joint in Staad Model

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If they are two separate structures, and from Manny's description  it sounds like they are, pounding can be a very signifcant issue because one structure will likely zig when the other one zags. 
 
Bill Cain, S.E.
Berkeley CA
 
 
-----Original Message-----
From: Sherman, William <ShermanWC(--nospam--at)cdm.com>
To: seaint(--nospam--at)seaint.org
Sent: Thu, 23 Feb 2006 10:17:58 -0500
Subject: RE: Expansion Joint in Staad Model

These will act like two separate structures and should be modeled as two
separate structures.  Ignoring the expansion joint will allow load
sharing, which is not an accurate analysis.  


William C. Sherman, PE 
(Bill Sherman) 
CDM, Denver, CO
Phone: 303-298-1311
Fax: 303-293-8236
email: shermanwc(--nospam--at)cdm.com
 

> -----Original Message-----
> From: Manuel Zuniega II [mailto:mannyzuniega(--nospam--at)yahoo.com] 
> Sent: Thursday, February 23, 2006 1:16 AM
> To: seaint(--nospam--at)seaint.org
> Subject: Expansion Joint in Staad Model
> 
> Hello list,
> 
> I just want to know how to consider the expansion joint in 
> staad model considering 1(one) whole structure with 20mm 
> width expansion joint. This EJ is at the center of the column 
> & beam all throught the vertical plane of the building from 
> roof to mat foundation. It looks like two(2)structures 
> joining together.
> 
> Another question is, what is the structural effect if i 
> ignore the expansion joint in structural analysis?
> 
> Thanks,
> manny
> 
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