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Re: Railings

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I think Ralph is correct on this point.  The photos I saw looked like
the railing bracket at the floor attach point ripped out a chunk of the
floor ... sudden failure, not a yielding one.

 Robert Kazanjy, PE  **Disclaimer: I speak for myself not UC-Irvine**
 Senior Development Engineer
 Civil & Environmental Engineering
 UC Irvine
 E4130 EG,  Zot: 2175
Benson,Ralph wrote:

> I saw some of the news footage on the collaspe, but don't remember
> seeing
> a mangled pile of railing on the ground.  This leads me to suspect
> (without
> any further information) that the railing remained intact and the
> connection to
> the floor system failed.  ......snip......
> If the connections at the base held firmly, I would imagine the
> railing
> would have
> deflected well beyond structural allowables before it collasped.
> Since
> it
> appears to have been a sudden failure, I would investigate the
> connections
> (and the remains of the railing) before I cast any any stones.