Concrete block foundation

[rwand1]

This photo was taken in the crawlspace of a 20 year old foundation. The crawl was dry with a few spots of efflorensce, and water stains only.

As you can see there are no mortar joints. The walls were plumb and no signs of distress.

I assume that the hollow core has been filled with grouting in lieu of mortar joints?

Can't ever remember seeing a foundation constructed in this manner.

Thanks,

[Brian A. MacNeish]

In the 1970's, there was a block system promoted in which the block was stacked and the surfaces were parged with fiber reinforced mortar for strength.

http://www.thenaturalhome.com/drystackblock.htm

http://www.vobb.com/

http://www.masoncontractors.org/news...20070313083418

http://boards.hgtvpro.com/eve/forums...1/m/5191016591

[rwand1]

Thanks Brian, good links.

Cheers,

[tdietrich1]

Were they 'hollow'?

I remember hearing about dry stacked block, filled with rebar and concrete. For a clean finish, and solid design.

tom

[rwand1]

Thomas,

They were hollow, then filled with concrete.