Search results for query: *

thanks for reply....the application is for installing fuel tanks underground in a petrol station. we need some idea of whether possible fuel leaks/spills will permeate the soil and affect groundwater or is the soil relatively impervious. The samples are undisturbed but apparently too small for...

Confused now....surely 10 Exp-5 to 10exp-5 is medium permeability and certainly not low. You recommend falling head for highly reduced permeability, but to quote iandig from aprevious thread: "Falling head tests are suitable for a range of soil permeabilities but not all soils. If you are...

I have samples of clayey sand and clayey gravel (weathered granite) that I want to test for permeability. Which method should i do - falling or constant head?

Ground vibrations are very low amplitude waves that are transmitted through solid mediums and travel particularly well through rock. They are continually present and not easily detected. These vibrations affect high resolution electron microscopes which are focussing on things in the nano-scale...

Here is an attachment showing what is proposed. the loads are small (single storey buiding) but the vibrations are the main concern.http://files.engineering.com/getfile.aspx?folder=e4bd1f31-aae9-4cde-86a4-578575bc8090&file=Concept_re_microscope_base_J6046-01-002.pdf

Thanks for reply BigH...The idea behind the 350mm sand is to reduce vibration from the rock. Surely if you found on rock, the ground vibrations will interfere with the microscope??

Does anyone have any advice for the founding conditions for a high resolution electron microscope. We have encountered shallow quartzitic rock in test pits. The conceptual design is to place a 1m thick RC base on 350mm sand. Anything we sould be aware of? How do we determine severity of ground...

Does anyone know if there is a standard test to determine the absorbtion of water by a length of drill core?

I use a paper (attached) by the Minnesota DOT which correlates DCP (20mm/60° cone, 8kg weight, 575mm fall) with all sorts of stuff. You might find it useful.http://files.engineering.com/getfile.aspx?folder=19a4ed90-53fb-4f2a-a73e-1b602fc4591a&file=DCP_Paper.pdf

Can anyone tell me how to calculate predicted settlement from oedometer tests (e log p curve). I know how to calculate the collapse with the formula((eo-e1)/1+eo)*100. But dont know how to arrive at total settlement.

Hi there guys, I have acquired a hand held shear vane made by "Controls" but dont have an instruction manual and all attempts to get this from the manufacturer have failed. I have seen one in operation before and understand the basic theory but maybe one of you have experience with these devices...

I am trying to come up with a practical method of sealing off the underflow under a proposed new weir in a very inaccessible gorge. I dont know the depth of the rock and the river bed is filled with large boulders. Do I drill & grout or what?