The following is a section from an article titled: Hempcrete - Hemp Building Materials - Hemp For Houses.

"Hemp building boosters claim that hempcrete foundation walls are up to seven times stronger than those made of concrete, half as light and three times as elastic. This superior strength and flexibility means that hemp foundations are resistant to stress-induced cracking and breaking, even in earthquake-prone areas. The building material also is self-insulating; resistant to rotting, rodents and insects; and fire proof, waterproof and weather resistant."

http://www.hemp.org/news/book/export/html/202