Soil Units Weight Below Water Table For Analysis
Soil Units Weight Below Water Table For Analysis
(OP)
We are having a bit of a debate in the office about what loads to apply to a retaining wall below water table. One one side we have people who say take the dry unit weight of soil and add to it the unit weight of water. On the other side we have people who say take the buoyant weight of soil and add to it the unit weight of water. This obviously makes a sizable difference.
What do you do in practice for this condition?
What do you do in practice for this condition?





RE: Soil Units Weight Below Water Table For Analysis
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RE: Soil Units Weight Below Water Table For Analysis
RE: Soil Units Weight Below Water Table For Analysis
So, below the water table the equivalent fluid density be [(gammaSAT-gammaWATER)*(Ka)]+gammaWATER.
Let's say the water table is at 10 ft, Ka is 0.333, the moist unit weight is 115 pcf and the saturated unit weight is 120 pcf. The horizontal pressure at 10 ft would be 383 pcf and the horizontal pressure at 15 ft would be 791 pcf.
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