10-19-2008, 12:14 AM
sounds like your contractor friend doesn't know any good concrete men. There are lots of options for high strength pre-stressed fiber reinforced concrete. A friend has an oversized 4 car garage with a slab poured in one piece. Pre-stressed and reinforced with long strand glass fibers. 2 other friends who are mechanical engineers who specialize in materials gave it the two thumbs up before the pour was done. been a decade so far.