when pouring footings does garage floor go on top then blocks or blocks first then floor?

Answer 1

you pour your footing first,, then set the block,,, once you get the block higher than the grade of the floor (slab) you can then pour the slab
this site will help you with calculations

Answer 2

I'm in Florida and have been in the trades a long time. In direct answer, the footers are first.

Duct Tape gives you an example of one way I see foundations built here. Footers for the block, then block laid up a row or more, then that filled with concrete. That equates to a much thicker slab obviously, and usually allows multiple level housing, built over. Often for a single level slab, contractors may only FORM out the perimeter pour appropriate footers; wire or rebar the plot; pour a slab at 6 or 8 inches; equating to ground level and block on that.

Certainly to pour a slab the height of two or more blocks would dictate that the ground level must be raised after to accomodate a transition from driveway to garage floor; Unless the entire base structure was dug and poured to ground level, which is more what would be done for commercial, or buildings designed for higher density occupation.

Steven Wolf

Answer 3

Dig and pour footings, lay block, then concrete slab within the inside perimeter of the block. Typically 10 x 20 footing, although many times a backhoe operator will use a 24" bucket, 8" block, min 4" slab with expansion joint. But you should check with your local building department, they may require different sizing of materials.

OR... You can go with a monolithic slab, no block. If permitted by the building department.

Building department from region to region have different requirements, due to soil conditions, frost line, etc.