Crushed stone CN
Crushed stone CN
(OP)
What is a reasonable curve number to use for a 3/4" peastone driveway in an A or B soil group? The closest I've seen in tables is for gravel or dirt but it seems like crushed stone should have a lower CN. Thanks for any help.
RE: Crushed stone CN
www.hydrocad.net/curvenumber.htm
Be careful however. If the water that enters the peastone is going to drain along the sides of the driveway, then the peastone really doesn't effect the CN value, and you should just use the CN value for the underlying material.
RE: Crushed stone CN
Due to the fact that most gravel drives and lots end up paved eventually, in my Township, gravel is (by Code) considered impevious, and CN = 98 no matter what. Check with the reviewer.
Engineering is the practice of the art of science - Steve
RE: Crushed stone CN