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# Re: Floor vibration design

• To: seaint(--nospam--at)seaint.org
• Subject: Re: Floor vibration design
• From: Eric Ober <eric(--nospam--at)cagley.com>
• Date: Mon, 19 Nov 2001 14:31:28 -0500

```for multi-degree of freedom, the symbols become matrices.

Eric Green wrote:

> for a single degree of freedom system only. not many of those in structures.
>
> Eric Green,
>
> -----Original Message-----
> From: Scott, William N. [mailto:William.Scott(--nospam--at)veco.com]
> Sent: Friday, November 16, 2001 6:38 PM
> To: 'seaint(--nospam--at)seaint.org'
> Subject: RE: Floor vibration design
>
> the equation is
>
> m*dx^2 + c*dx + x = fn
>
> where m = mass
> dx^2 = acceleration
> c = damping
> dx = velocity
> x = initial displacement
> fn = forcing function
>
> Bill
>
> -----Original Message-----
> From: Mark Pemberton [mailto:Markp(--nospam--at)lbdg.com]
> Sent: Friday, November 16, 2001 2:48 PM
> To: 'seaint(--nospam--at)seaint.org'
> Subject: RE: Floor vibration design
>
> I just do not see how to develop a force given only
> a velocity.
>
> Mark Pemberton, P.E.
> Sacramento, CA
>
> -----Original Message-----
> From: dmorrow(--nospam--at)swensonsayfaget.com [mailto:dmorrow(--nospam--at)swensonsayfaget.com]
> Sent: Friday, November 16, 2001 1:48 PM
> To: seaint(--nospam--at)seaint.org
> Subject: Floor vibration design
>
> I believe it is the maximum velocity of the floor system calculated from the
> maximum displacement of the floor system due to induced vibrations.  See
> AISC's Steel Design Guide 11, "Floor Vibrations Due to Human Activity".
>
> Dan Morrow
> Swenson Say Fagét
> 2124 3rd Ave. Suite 100
> Seattle, WA  98121
> 206-956-3745 (direct)
> 206-443-4870 (fax)
>
> -----Original Message-----
> Sent: Friday, November 16, 2001 12:00 AM
> To: dmorrow(--nospam--at)swensonsayfaget.com
> Subject: seaint Digest for 15 Nov 2001
>
> From: Mark Pemberton <Markp(--nospam--at)lbdg.com>
> To: "'seaint(--nospam--at)seaint.org'" <seaint(--nospam--at)seaint.org>
> Subject: Floor vibration design
>
> We have some plans that specify that the floor system shall
> be designed for a "max velocity of 4000 micro-inches/sec".
> What does this mean and how do you accomplish this?
>
> Mark Pemberton, P.E.
> Project Engineer
> Lionakis Beaumont Design Group
> 1919 19th Street
> Sacramento, CA 95814
> Phone: (906) 558-1900, ext. 300
> Fax: (916) 558-1925
> www.lbdg.com
>
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