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In Reply to: Emotions have no place in engineering posted by John Gratsias on November 9, 2004 at 19:28:13:
The only case in my experience where a floor does not move is when it is a poured slab in direct contact with the ground. Some very old houses with post and beam frames and thick flooring also can be quite rigid. The great majority of what is left is not. I have been in many large new buildings with poured concrete slabs and jumping in them causes things to rattle in the room.Walls however don't move up and down, only so much as the entire house can. You spun the answer. I don't know anyone who can jump so hard the entire house moves, so walls do not move. (unless it is a non load bearing wall in a poorly built home)
People can check by simply placing a half full glass on the top of their turntable, moving to the center of the room, and jumping. If the water is moving (which is most probably will be) their table is not vibration free.
I have never seen water move when placed on a wall mount, ever.
Simply put the facts are:
If the floor is a mover, the walls, even if they move, will be moving less.
If the floor is not a mover, the walls will still move less.
On top of that, on a wall mount the table sits on a plith connected to the room by 4 pin point spikes. That's about as decoupled as you can get.
In any case I think we are at cross purposes. You are not talking to the original point of my post and instead went off on an engineering tangent, which while always interesting doesn't answer my original question.
It's all about the music...
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Follow Ups
- and engineers still can't design a sensible parking lot - Peter Gunn 21:30:33 11/09/04 (8)
- I see. - John Gratsias 01:16:19 11/10/04 (7)
- apparently not - Peter Gunn 05:58:58 11/10/04 (6)
- In support of your wall mount.............. - Chuck Y 08:59:00 11/10/04 (5)
- For the record - John Gratsias 12:25:40 11/10/04 (0)
- I'm all for opposite opinion - Peter Gunn 09:31:27 11/10/04 (3)
- Re: I'm all for opposite opinion - John Elison 11:55:51 11/10/04 (2)
- I allowed for you - Peter Gunn 14:53:00 11/10/04 (1)
- Re: I allowed for you - John Elison 19:31:08 11/10/04 (0)