Garage Door Slab Edge Detail
Depending upon the type load coming upon the slab the thickness is varied light loads for one to two light cars or trucks the concrete should be at least four inches thick.
Garage door slab edge detail. The large scale detail below shows a cross section through the perimeter of the type 1 garage foundation giving dimensional details and the general placement of reinforcing steel and anchor bolts. I am treating the footing and the thickened edge as a single grade beam similar to as shown in this typical detail. Or you could double layer your 1 goods. Yes use expansion joints.
Standard thickness of the garage floor slab used worldwide is 6 inches. You will also need some type of steel reinforcing in the garage floor slab portion of the design such as 10 gauge wire mesh that is formed in 6 x 6. 2 thick t g xps comes in 2 wide sections by a number of different lengths 8 10 12 and on edge at the door would deliver r10 down to about the same depth as your interior insulation. If your in rain country provide a depression in the slab where your door closes about an inch deep 6 wide and about 3 wider than your door opening to keep water out.
The second sheet is for a similar situation however in this case i am considering option 2 where the stem wall has been blocked out and a thickened edge slab spans the gap created by the garage door.