planning for a full basement for new house in eastern tenn.. which is the cheapest of the 2 for a 9 foot high basement,, a poured concrete foundation or a cement block foundation ?? any response is greatly appreciatwd, THANKS JIM
I would think block would be cheaper, but not as strong against side winds. once you start a poured foundation, if you stop, you have a strength gap, not to mention a gap waiting to leak.
sig: if this is a new economy, how come they still want my old-fashioned money?
A lot depends on your close proximity to a ready mix plant and the going rate for concrete @ yard. Block seems to be laid here for about the same price as the block itself. Best to have some contractors from each trade to estimate your cost. I prefer poured walls over block just for the mere waterproofing feature. With that being said make sure you go the extra effort of a water proofing exterior treatment to include drains on either one. Preferred IMO is dimple sheets over a flexible membrane to a French drainage system.
Block will be cheaper, probably half to 2/3rds the price of the pour. While you have a fair amount of labor in laying the block, you also have a lot of labor in setting forms - plus the forms themselves.
The poured foundation will be stronger - no question.
You have a nine foot wall. Depending on how high up you are going to backfill and what you are going to backfill with, standard eight inch block may not be strong enough. You may want to think about reinforcement between the courses and/or twelve inch block. Otherwise you might find yourself like the person in another post with a bowed wall. Poured concrete is stronger than block, but usually more expensive.
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