Typical Garage Floor Slope

Getting ready to pour a garage floor slab.

Typical garage floor slope.

The apron s length depends on the required slope more length is needed to reduce steep slopes. The garage is 28 ft deep so 1 8 to 1 4 inches per foot means the slab shoub be 3 5 to 7 inches higher at the end opposite the door. Everything i ve read says slope it 1 8 to 1 4 inch per foot toward the garage door. 7 inches sounds like too much both visually and from a walkability standpoint so the most i m going to consider is 3 5.

As a general rule of thumb most floor to floor height requirements range from 10 to 12 feet. Determine the ramp slope based on the requirements of the structure through los considerations and the expressed purpose of the garage. Determining the angle of your floor s slope provides a simple method to level work surfaces in the garage. Aci 117 90 standard specifications for tolerances for concrete construction and materials gives a level alignment tolerance of 3 4 inch for top of slab elevation of slabs on grade.

If the slab elevation at the trench. The apron in front of the garage smooths the transition for the vehicle from the driveway into the garage and acts as a barrier to debris and moisture. The apron extends the width of the garage floor.