BCCMP Manning's n

[mbherlihy]

Could anyone tell me what they use for Bituminous Coated Corrugated Metal Pipe (BCCMP) manning's n value? Please include your reference if you have one handy. Thank you much.

 

[civilperson]

Call the manufacturer.

 

[cvg]

same as regular CMP - generally accepted as 0.024

 

[LCruiser]

Depends if it's spiral or annular.

 

[dicksewerrat]

If the corrugations on the invert are filled, you can use .021.

Richard A. Cornelius, P.E.

http://WWW.amlinereast.com

 

[mbherlihy]

cvg or dicksewerrat.... do you happen to have any widely used reference manual for this information? My bently stormwater manual does not show BCCMP. I appreciate the responses.

 

[cvg]

just use your reference for normal cmp. the coating does not have a significant effect on the roughness