PSN-L Email List Message
Subject: concrete piers
Date: Tue, 05 Nov 2002 12:19:33 +0000 (GMT)
having read the article on installing seismometers,
I'm a little unclear on one aspect and would appreciate some advice.
The article states that a 4 inch gap should be left around the base of the
pier. What about the rest of the pier?
Also, the 4 inch gap seems to be filled with insulation. Won't this cause the
pier to move with the insulation/surrounding ground?
I'll be building on clay soil. How deep should I go (within reason!) and are
there any other tips for clay?
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