Apr 8, 2025 #1 M mohammedmahmoud7876@gmail Student Apr 8, 2025 2 I want a material with a hydraulic conductivity higher than 500 in/hr to use as a topsoil in a French drain.
I want a material with a hydraulic conductivity higher than 500 in/hr to use as a topsoil in a French drain.
Wednesday at 3:48 PM #2 Gr8blu Electrical Aug 18, 2021 726 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
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
Wednesday at 3:59 PM #3 zelgar Civil/Environmental Jan 21, 2005 365 500 in/hr = 0.055 cm/sec so you're looking for a coarse sand or something larger.
Wednesday at 4:12 PM #4 Gr8blu Electrical Aug 18, 2021 726 @zelgar : 500 in/hr * 2.54 cm/in * (1/3600) hr/s = 0.35 cm/s not 0.055.
Thursday at 3:24 PM #5 zelgar Civil/Environmental Jan 21, 2005 365 Agreed, I divided instead of multiplying by 2.54 when converting from inches to cm.
