I might add that it would lend to consistency having the same lab tech run the whole proctor. Less chance for human error there being less humans involved. I believe that would apply to all proctors from a lab. My lab had a concrete tech and a soils tech, so all the proctors were run by the...
Just an x-soils inspector here. I agree that it's true that compacting soil will lead to an <100% value on a density gauge. However, here in the Pacific Northwest there is the rain most of the year, and that leads to consolidation in addition to the original compacted density. I have tested...
I would say if your deck is big enough to require 18 piers, it is worth the $600. The firm I used to work for that I would perform DCP or a t-probe would have been at least double for that consultation. If you're thinking safety, longevity, and ultimately peace of mind for the entire life of...
Wouldn't it also be a matter of bb's and bowling balls as far as the transmission of the water? Imagine if those bowling ball pore spaces were filled with bb's? A hydrologist's nightmare it seems to me. Interesting to figure out, though. One could probably come up with a nice gradation curve...
I'm not sure flooding compaction would yield a homogenous density. At least I don't see any way to guarantee it. With that in mind, I did do some density tests on bottom ash that was being placed as fill for a ramp in lifts...the local method was to train a fire hose on the drum and give it a...
That is an extremely high density for a modified proctor. Can you tell me what the percentage retained on the 1 1/4" was? If there is any cobble-sized materials involved, I've got some advice about the use of a density gauge. If nothing else you can always take a sample from the installed...
If you are backfilling over soft soils, the engineer may allow overexcavation to a reasonable depth and graduated compaction to your first left. Don't forget about that RFI!
Do you still have vegetation? Creep is easily seen by the presence of a 'drunken forest', where the tree trunks are curved into an upward direction as opposed to trunk and tree being straight up and down.
I believe creep is caused by the anisotripic freezing of neighboring soil particles, one...
