Filling variable gap of a sunken patio

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Old 04-07-16, 09:54 AM
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Filling variable gap of a sunken patio

We are converting a large dirt patch in the back to a sunken patio+gazebo (to prevent blocking the view of the mountians to for our neighbors).

The dirt patch is circular inside a large triangular concrete.
I'm using stones to build up the internal wall. The floor is angled to remove water buildup out throw a drain. The trouble is that the top concrete is not angled, its level and was originally poured directly onto the hard desert earth.

There is an uneven gap between the sunken walls and the under side of the concrete floor. What is the best way to fill this gap?

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Old 04-07-16, 10:22 AM
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IIWM, I'd cut the slab back with a diamond saw to get a neat edge and then use cap stone (on top of more layers of the wall stone if needed) to make the top roughly level with edge of the slab.

If you don't want to go that route, you could fill in with more layers of wall stone, cutting them shorter as necessary to fit under the angled slab. For the final gap, you can either cut tapers on the top layer of stone, or you can chip off enough of the bottom edge of slab to make room for a whole height piece of wall stone. The smaller stones should be held in place with landscape block adhesive since their weight and size alone won't be enough to keep them in place.

Good luck!
 
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