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LTb1ow · 10-04-2009, 11:04 AM

My pleasure.
http://en.wikipedia.org/wiki/Concrete_masonry_unit

And why not? A concrete block stacked correctly will hold up a 20 ton boat.... for long periods of time...and if stacked right, if they were to crack you will not have a full failure.

10-04-2009, 11:04 AM	#11
LTb1ow Mongo the Meet Coordinator Join Date: May 2008 Posts: 16,938 iTrader: (8)	My pleasure. http://en.wikipedia.org/wiki/Concrete_masonry_unit And why not? A concrete block stacked correctly will hold up a 20 ton boat.... for long periods of time...and if stacked right, if they were to crack you will not have a full failure.