Hydraulic permeability of crushed stone (macadam)

[Perre]

Hi!

I need to know the approximate hydraulic permeability (m/s) of crushed stone, grain size 4-8 mm (in Sweden we use the term "macadam" for this type of sorted, crushed material, I don't know if it's a common term in other countries).

Thank you!

 

[LHA]

"Macadam" in the USA means bituminous concrete, generally considered to be 95% impermeable.

Sand with gravel mix is typically percs between 1,000 and 10,000 gallons/day/square foot, using 1.55x10^-6 cfs/gpd, you get between 0.005 and 0.0005 m/s.



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