NM CID GF-4 Practice Questions - New Mexico CID GF-4 Drainage Or Flood Control Systems Contractor Examination Exam

CMP has a higher Manning n, so friction head loss is greater and full-flow capacity is lower CMP always has a smaller inside diameter than the nominal size, while concrete does not Concrete pipe cannot be laid on a slope, so the comparison is invalid CMP is pressure pipe and concrete is gravity pipe, so Manning's equation does not apply to CMP