Kraemer Gunite

http://trentonpkwx572.bravesites.com/entries/general/from-around-the-web-20-fabulous-infographics-about-calconstructions-com-au-concrete-foundations-melbourne

The concrete pumped into a crawl area has more water included to it so that the concrete can self level itself. Selecting to have wet, permeable concrete set up in the crawl area is like adding 300 lbs of water