Question

The dimensions of manning's roughness coefficient (n) are

Answer 1

Surface Material                             Manning's Roughness Coefficient - n -

Concrete - centrifugally spun                       0.013

Copper                                                          0.011

Corrugated metal                                           0.022

Earth, smooth                                                 0.018

Answer 2

HIII.....

HERE IS YOUR ANSWER:--------

CONCENTRATE -CENTRIFUGALLY SPUN

0.013

COPPER

0.011

CORRUGATED METAL

0.022

EART ,SMOOTH

0.018

HOPE THIS HELPS YOU.....