Is this possible?
I was leaving her house today, my friend mentioned to me that she wants to add a carport to her asphalt driveway, except there is a slight incline to it and everything I’ve read this evening is that the installation area for a carport needs to be flat. The grade looks to be maybe 8" over 20’. It was dark so I couldn’t measure.
My idea would be:
- saw cut and remove the asphalt down to the underlayment (hopefully gravel) just over 6" wide in two strips that match the width of the carport
- setup forms that are *just inside* the saw cut
- drive vertical rebar into the underlayment, staying below the eventual concrete height (unsure about this…
Is this possible?
I was leaving her house today, my friend mentioned to me that she wants to add a carport to her asphalt driveway, except there is a slight incline to it and everything I’ve read this evening is that the installation area for a carport needs to be flat. The grade looks to be maybe 8" over 20’. It was dark so I couldn’t measure.
My idea would be:
- saw cut and remove the asphalt down to the underlayment (hopefully gravel) just over 6" wide in two strips that match the width of the carport
- setup forms that are *just inside* the saw cut
- drive vertical rebar into the underlayment, staying below the eventual concrete height (unsure about this process)
- tie horizontal rebar to the verts
- pour the concrete, maybe placing j-bolts in the wet mud at the exact positions to secure the bottom carport mounting rails
- let concrete setup, remove forms (maybe cold patch in the empty areas where the forms were?)
- attach mounting rails to concrete and construct carport
See the image for the side view of the basic idea. The line underneath is the asphalt driveway. The wedge is the proposed curb/footer. Top view is simply two pairs of parallel lines, with a large gap between the two inside lines. 
Is this possible, or would another solution help get some weather cover for her car?
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