6 or 8 inch cmu's
I have a contractor that is building a house for me and he is using 6 in cmu's for the foundation (three high on a crawl space, little too no backfill against it). He stated these units have the same compressive strength as 8 in cmu's. I had an individual that used to be a brick layer tell me this was crazy. He said he had never seen a house built on a foundation using 6 in. Who is right?