Engineered suspended garage slab

[Joe Carrick]

FWIW, I have built many garages above grade using 4x12's @ 12" o.c. (12' span) and 1-1/4" T&G Plywood Decking. You can cover this with just about any finish flooring you want - Tile, Vinyl, Hardwood or Concrete. The main thing is to put a good waterproof/oil-grease resistant sealant.

As Gene said, having a Column or two and a Beam down the center of the space below helps a lot.

Structurally, a vehicle is generally not as big a load as you would have to design a balcony for. The problem is spot loads at the wheel locations.

[dshall]

FWIW, I have built many garages above grade using 4x12's @ 12" o.c. (12' span) and 1-1/4" T&G Plywood Decking. You can cover this with just about any finish flooring you want - Tile, Vinyl, Hardwood or Concrete. The main thing is to put a good waterproof/oil-grease resistant sealant.

As Gene said, having a Column or two and a Beam down the center of the space below helps a lot.

Structurally, a vehicle is generally not as big a load as you would have to design a balcony for. The problem is spot loads at the wheel locations.

Yep, been there done that.