We would expect the standard proctor to come up lighter (3-5%)because of the smaller hammer, lower height, and fewer layers.
But if it exceeds 5% and the test were in the 97-99% range we might be able to make an argument to change the spec.
We have had one sand cone test done that confirmed the...
Thank you all for your advice.
We are looking for other sources of material, but we are hampered by the agency insisting that sources must be covered by the SMARA act of 1975 (strip mines). There are only so many in the area and many need their overburden for reclamation purposes.
We will...
The Testing Engineer did do one sand cone test to check against the nuclear gauge. The tests came out the same.
The pad is +/- 60,000sf and roughly square.
The material does not pump under the loaded scraper when the moisture is close to optimum.
Another thing that's puzzling me is that...
Forgot to answer one of you questions. I can only assume that because of the installation of the wick drains and the surcharging of the pad that the engineer is concerned about settlement.
We've tried our best to eliminate all the variables. Astm 1557 is not that rare in this part of the...
The Project:
Building pad for a Reverse Osmosis and Brine Concentrator Water Treatment Plant.
Strip 18” of native soil.
Compact native soil subgrade to 95%
Place +/- 2’ non expansive fill @ 95%
Place wick drain blanket (12” drain rock between two layers of Mirafi 500X)
Install wicks 5’ on...
Achieving 100% compaction on base rock is more about finesse than brute force. I’ve had good results using a rubber tired asphalt roller. Place the base in 6” to 8” lifts, add water until the material is a little juicy, then make about 6 to 8 (actual number may vary) passes with the rubber tired...
