BigH,
The original testing company tested the material before it was delivered then used that value to compare. The new testing company tested proctor value on site.
Thank you for your replies.
Had another test done by another geotech company. Turns out the first company was using a dry density number that was too high. The pad was above 95% in 2 locations, and above 98% in the other 2 locations.
For example, using a sandy/gravel fill with a maximum dry density of 129.2 pcf the contractor was only able to achieve 91% compaction. This house pad is between 2-4' and will support a slab on grade post-tensioned foundation. Any thoughts on if the compaction is adequate and will not settle...
