Rocky Geans ran his own concrete construction company for more than 40 years. Since 2006, he’s shared wisdom gained from his experience at the Rocky Geans Construction Business School. Nearly 300 contractors have learned how to organize their business and be more successful. Learn more at www.rockygeans.com.
Q. How should a garage slab be sloped for drainage toward the overhead door? At 1/4 inch per foot on a 24x26-foot foundation, the height difference from front to back would be more than 6 inches. Do I need to grade the sand and gravel sub-base at the same slope so the slab can have a uniform 4-inch thickness?