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I live 5 minutes from the Brechin quarry - bad rock..........
even over at jimmyD - stay away from Brechin limestone - if the OP is in Caldonia look at Clappison corners (guelph) limestone
To answer the original question: 10" is more than adequate for the base = on a 3' wall - 2 lifts 0f 20" you will be good
is this a homeowner or contractor
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~ian
Last edited by ianc : 11-04-2007 at 04:48 PM.
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