Soil Shrinkage % during Grading
Soil Shrinkage % during Grading
(OP)
Does anyone know how to figure out soils shrinkage estimates in percenteage during rough grading? I have the dry density and the maximum density...
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Soil Shrinkage % during Grading
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RE: Soil Shrinkage % during Grading
Common highway shrinkage figures run from 10 to 30 percent, generally around 20 percent. It seems to be better practice to go on the high side with the plans, since running short of fill may be difficult to correct on the job.
If you really think the tests will be useful, then also get density of the cut material as a guide as to the difference. However, if much drying is required to achieve the percent compaction, that may not occur on the job.
RE: Soil Shrinkage % during Grading
RE: Soil Shrinkage % during Grading
91.5% of Maximum Density - Actual Dry Density
---------------------------------------------- X 100 = Y
91.5% of Maximum Density
Y = % shrinkage
Thanks again!
It turns out to be ~18% shrinkage in our case... :)
RE: Soil Shrinkage % during Grading
RE: Soil Shrinkage % during Grading
RE: Soil Shrinkage % during Grading