Constructing the rubble trench. Yesterday the site contractor dug the trench, laid in the filter fabric, and was just filling in the trenches with the stone when the rain hit. Luckily, it was not hard enough to pose any real setback, so they finished up today. Note the really short orange stakes in the last photo marking the utility conduits: one each for sewer, water, electric, and cable.
The primary advantages of the rubble trench are excellent drainage to avoid moisture migration through the slab, and reduced carbon emissions because it uses much less concrete. Refer to the DESIGN tab on the dumbhome.com webpage for more info. They are also readily compatible with thick wall sections like my 12" super-insulated exterior walls.
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