Some foundations were being built of concrete blocks, and many creating codes expected the usage of masonry in hearth walls. The use of lesser-sized stones and thick mortar joints made an elastic, slender construction that pressured the masonry to its fullest. The bearing of unit on unit demanded the usage https://www.whofish.org/Default.aspx?tabid=45&modid=379&action=detail&itemid=284671&rCode=33