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,
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.masoncontractors.org/newsandevents/masonryheadlines/headline.php?id=20070313083418
http://boards.hgtvpro.com/eve/forums/a/tpc/f/1611000091/m/5191016591
Thanks Brian, good links.
Cheers,
Were they ‘hollow’?
I remember hearing about dry stacked block, filled with rebar and concrete. For a clean finish, and solid design.
tom
Thomas,
They were hollow, then filled with concrete.