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To Big H & dmoler...those are good points but that is not my focus right now. I am trying to determined maximum density of 3" minus material in the lab and am leaning towards ASTM D 4253 which does use a 11" mold. Once I get this max density, what percentage compaction should I recommend in...

I am considering buying the test set for the 4253 procedure (laboratory vibratory compaction) so that I can perform field density test on 3" minus soils that have an aboundance of aggregate retained on the 3/4" sieve (say 50 to 70 percent retained 3/4" sieve). Once I find the maximum density in...

Big H- Of course when you say 3 inch minus that means the material needs to fit thru a 3 inch sieve and you will likely have an occasional piece that is 2.99" x 4". Just like when you do a 1557 proctor and the 3/4 inch sieve will allow an occasional piece that is .74 inches by 1 inch in...

Thanks for the info. EM 1110-2-1906 is for 2 inch minus material which is actually helpfull for another project I have. I am still looking for an acceptable procedure for 3" minus material.

I am about to start the monitoring and testing (if possible to test) of a 40,000 cubic yard embankment project. Specs call for embankment material to be 3 inch minus and well-graded. Contractor is crushing boulders to 3 inch minus material which has about 40% to 60% retained on the 3/4" sieve...

I have been asked to perform a soils investigation for a proposed 20 acre-feet retention basin. Max Bank height is 15 feet. I also need to provide recommendations for the materials and specs for the placement of materials. Any tips?? Any recommended books on this topic?

I have been asked to do a soils investigation for a proposed 20 acre-feet capacity retention basin. Maximum embankment height is 15 feet. They also want me to provide specs for materials and construction techniques. I know the native soils are MH elastic SILT. Any tips? Any good books to...

Thanx...the poulos book is sold out but still looking.

Does anyone have a recommendation for software for mat foundation analysis?

I am working on a project that has a 5 million pound load that we can spread over a 30 foot to 60 foot diameter area. We have SPT values on the upper SP/GP soil which rest on moderately hard ROCK that ranges in depth from 12' to 22' below grade. We have some soil samples in the lab that we...