Depth of acquifer
Depth of acquifer
(OP)
How is depth of acquifer known or measured. Is it provided by local agencies. It is of course important to know the depth of acquifer to dewater soil. How do you get it?
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RE: Depth of acquifer
If you are working on a project that's realted to construction dewatering, you are dealing with different issues. Who cares whether you get a certain quanity of water, you are more concerned about reducing hydrostatic pressure at the base of the excavfation and providing stability to the excavation sidewalls. So, you need to concern yourself with the water pressures (well readings) and permeability of all the layers.
Now, what to do below the bottom of the excavation? Well, you need to know the same things to some depth where there is a significant contrast in permeability to allow the assumption of "impervious." If your cut is 20 ft, you'd likely need data 10 ft below the bottom of the excavation unless you're still in some pervious layer.
This is a case where experience and good judgement goes a long way. Not that it's complicated, it's just hard to say in such a general discussion.
f-d
¡papá gordo ain’t no madre flaca!
RE: Depth of acquifer
RE: Depth of acquifer