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

Re: Balcony Floor Vibration

[Subject Prev][Subject Next][Thread Prev][Thread Next]
There was a recent article in Modern Steel Construction regarding
floor vibration.  I don't remember it very well, but it stated that here is
a new
guide for floor vibrations available.  I believe that the article stated
that they
have found that increasing the stiffness can actually help.  I would check
the
new guide.

Dan Goodrich, P.E.

----- Original Message -----
From: "Christopher Wright" <chrisw(--nospam--at)skypoint.com>
To: "?" <seaint(--nospam--at)seaint.org>
Sent: Tuesday, June 05, 2001 10:28 AM
Subject: Re: Balcony Floor Vibration


> >My experience of vibration design is that increasing the moment of
> >inertia is not very effective.
> I've found it's damn near impossible without increasing the mass. If you
> increase mass and stiffness the period doesn't change much. If it works
> out that different elements provide stiffness and mass (like a steel
> deck, stiffened with welded stringers), you may be able to add more
> stiffness than mass, but just increasing member sizes typically ends up
> chasing its tail.
>
> Christopher Wright P.E.    |"They couldn't hit an elephant from
> chrisw(--nospam--at)skypoint.com        | this distance"   (last words of Gen.
> ___________________________| John Sedgwick, Spotsylvania 1864)
> http://www.skypoint.com/~chrisw
>
>
> *
> *   This email was sent to you via Structural Engineers
> *   Association of Southern California (SEAOSC) server. To
> *   subscribe (no fee) or UnSubscribe, please go to:
> *
> *   http://www.seaint.org/sealist1.asp
> *
> *   Questions to seaint-ad(--nospam--at)seaint.org. Remember, any email you
> *   send to the list is public domain and may be re-posted
> *   without your permission. Make sure you visit our web
> *   site at: http://www.seaint.org
>


* 
*   This email was sent to you via Structural Engineers 
*   Association of Southern California (SEAOSC) server. To 
*   subscribe (no fee) or UnSubscribe, please go to:
*
*   http://www.seaint.org/sealist1.asp
*
*   Questions to seaint-ad(--nospam--at)seaint.org. Remember, any email you 
*   send to the list is public domain and may be re-posted 
*   without your permission. Make sure you visit our web 
*   site at: http://www.seaint.org