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Does anyone out there have any experience combining a rubble trench with a standard poured foundation on a daylight basement?
The way I imagine this might work is a frost depth rubble trench on three sides with a continuous footer/beam on all 4 sides. This footer/beam would be essentially on finished grade at the front and 7′ deep at the back. Then standard 8′ poured wall at the back and stepped walls on the sides and a wood framed wall on the daylight side.
Drainage for the 8′ wall would pass around the end and down into the bottom of the rubble trench to connect up with the rubble trench drainage.
The finished floor slab would come out either flush with the footer or more normally rest on top.
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Didn't Frank Lloyd Wright come up with that??
*> Didn't Frank Lloyd Wright come up with that?? I seem to recall reading that he got the idea from the railroads; I don;t know where they got it from
*it's done all the time..we've used it to extend footings down thru deep peat.. and to drop frost walls at door and walk-out drops as you suggested..then normal footing/foundationss are poured on the stone wall..we've never used a rubble fill though.. it isn't as predictable as stone..usually we'll use either tailings (3 - 4 inch stone) or 1.5 inch crushed stone...
*Pretty sure the railroads got it from the Romans. Some of thier roads are still being used.
*Mark,This was standard building proceedure for the better class of home before the advent of a damp-proof course, ie 15th, 16th, 17th centuries. The brick footing was stepped in width so eg. a 9" wall would have an 18" footing and the stone foundation was connected to a rubble drain to keep the foundations dry.
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Does anyone out there have any experience combining a rubble trench with a standard poured foundation on a daylight basement?
The way I imagine this might work is a frost depth rubble trench on three sides with a continuous footer/beam on all 4 sides. This footer/beam would be essentially on finished grade at the front and 7' deep at the back. Then standard 8' poured wall at the back and stepped walls on the sides and a wood framed wall on the daylight side.
Drainage for the 8' wall would pass around the end and down into the bottom of the rubble trench to connect up with the rubble trench drainage.
The finished floor slab would come out either flush with the footer or more normally rest on top.