RE: pinhole Earthquake structures

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From: Black, Heidi (BlackH@exchange.esuhsd.org)
Date: Thu Oct 18 2001 - 11:34:07 PDT 

Message-ID: <190CE0E37D38D311BFB9009027858A58021CF07A@exchange.esuhsd.org>
From: "Black, Heidi" <BlackH@exchange.esuhsd.org>
Subject: RE: pinhole Earthquake structures
Date: Thu, 18 Oct 2001 11:34:07 -0700

 Does anyone have suggestions for a quick
project to test out the safety of various type of structures?
-- Adam Singer

Adam,
I lost my house in the Loma Prieta earthquake. Being the science educator
that I am, though, I decided to build a model to show my students building
resonance.

I used 6 metal packing straps for the support beams and 3 planks for the
floors/ceilings.
The structure moves quite nicely and I can get resonance at frequencies that
move different levels of the 2 story structure quite differently!
More packing straps can be added in different configurations using clamps
to dampen the motion.
have fun rockin'
Heidi

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