Permeability of #57 stone
Permeability of #57 stone
(OP)
I am hoping to use Darcy's Law to get the expected velocity of stormwater through a french drain I am designing. However I have not found a coefficient of permeability for #57 stone I am comfortable with. Someone told be .1cm/sec, but that seemed conservative. What K value have you used for this?
thanks
thanks





RE: Permeability of #57 stone
RE: Permeability of #57 stone
http://people.engr.ncsu.edu/barlaz/lectures/13_lf1... - 1 cm/sec
http://publicworks.kingsporttn.gov/files/publicwor... - 10 cm/sec
RE: Permeability of #57 stone
Now to the real question, why do you want to calculate velocity in a French drain? If you want to have conveyence, install a pipe. A French drain is to dry out an area not provide stormwater conveyence.
Mike Lambert
RE: Permeability of #57 stone