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RE: Blast Door Design : Edge Rotation

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The 1 degree rotation requirement is in the PDC TR-06-08, correct?  Each 
requirement must be satisfied, even for elastic behavior. Are you 
performing a dynamic SDOF analysis?  That is the basis for the ductility 
and rotation requirements.  In general, a static analysis will be 
conservative.  Rotations from a finite element analysis are not the same 
(usually higher) than that determined for a SDOF model. I will say it is 
very unusual for a component to have this low response limit.

Regards,
Larry
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Larry M. Bryant, PhD                           Principal Engineer
Applied Research Associates, Inc.          email: lbryant(--nospam--at)ara.com
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-----Original Message-----
From: seaint-seaosc(--nospam--at)mail-list.com [mailto:seaint-seaosc(--nospam--at)mail-list.com] On 
Behalf Of Himanshu Goyal Sent: Monday, October 29, 2012 2:36 PM
To: seaint-seaosc(--nospam--at)mail-list.com
Subject: Re: [SEAINT-SEAOSC] Blast Door Design : Edge Rotation

Hello:

Which provision in UFC manual sets this limit. Could you please post a link 
 for it.

On Mon, Oct 29, 2012 at 1:10 PM, Kapil Nandwana
<kapil.nandwana(--nospam--at)gmail.com>wrote:

> Hi,
> 
> I am currently working on a blast door design and geometry of the door
> and pressure requirements are such that despite having a ductility
> ratio of less than 1, i.e. door remains in elastic region, I am
> getting a edge support rotation angle greater than 2 degrees (which is
> the limit set in UFC manual for protection category-I structure).
> 
> My question is, since I remain in the elastic region, there is no way
> the blast door is going to fail. In that case, should I be worried
> about not meeting the support edge rotation criterion. This edge
> rotation criterion seems to be an overly conservative criterion.

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