High hydraulic conductivity materials

[mohammedmahmoud7876@gmail]

I want a material with a hydraulic conductivity higher than 500 in/hr to use as a topsoil in a French drain.

 

[Gr8blu]

You're sure about that?
500 in/hr = 1270 cm/hr = 0.35 cm/s.
Gravel is one of the more useful materials and ranges between 0.1 and 100 cm/s.
Clean sand can get you somewhere in the 0.001 to 1.0 cm/s range.

See the wiki table from the following link

Hydraulic conductivity - Wikipedia

en.wikipedia.org

 

[zelgar]

500 in/hr = 0.055 cm/sec so you're looking for a coarse sand or something larger.

 

[Gr8blu]

@zelgar :
500 in/hr * 2.54 cm/in * (1/3600) hr/s = 0.35 cm/s not 0.055.

 

[zelgar]

Agreed, I divided instead of multiplying by 2.54 when converting from inches to cm.