Contra Costa County |
Ordinance Code |
Title 9. SUBDIVISIONS |
Division 914. DRAINAGE |
Chapter 914-8. CONDUITS |
§ 914-8.008. Closed conduits—Outlet velocity.
Latest version.
Where the outlet velocity from a closed conduit exceeds the maximum allowable velocity for the storm drainage facility receiving the flow, suitable protective works shall be constructed to dissipate the flow. At a minimum, the outlet end of the closed conduit shall be protected by a cutoff wall and the placement of loose riprap. The protective works shall be those specified by a licensed engineer and shall be based on enginering calculations of allowable flow velocities.
(Ords. 89-28, 78-5).