Curb Gutter Flow Rate

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

Curb gutter Flow Rate Formula

\(\large{ Q =  \frac  {  0.56 }  { n }  m_c^{5/3}  m_l^{1/2}  q^{8/3}  }\)         

Where:

\(\large{ Q }\) = gutter flow rate

\(\large{ m_c }\) = cross slope of pavement

\(\large{ q }\) = flow width

\(\large{ m_l }\) = longitudinal slope of pavement

\(\large{ n }\) = Manning's roughness coefficient

Solve for:

\(\large{ m_c = \frac { Qn } { 0.56 \; m_l^{1/2} Q^{8/3} } ^{3/5} }\)

\(\large{ q =  \frac { Qn } { 0.56 \; m_c^{5/3}   m_l^{1/2} } ^{3/8} }\)

\(\large{ m_l =  \frac { Qn } { 0.56 \; m_c^{5/3}  Q^{8/3} } ^2 }\)

\(\large{ n =  \frac  {  0.56 }  { Q }  m_c^{5/3}  m_l^{1/2} Q^{8/3} }\)

 

Tags: Equations for Flow