I am looking to build a garage on a sloping hill. This spot would be the best to build on. What would the best way to build on it so the foundation will hold. i am looking to use cinder block for the foundation. I was going to be about 36" under ground with the blocks. It is about a 4' slope from front to back. The garage is going to be a 24w x 30d. 1 story garage. I am just worried about the foundation blowing out with all the pressure from when i fill inside the foundation.