RIPRAP PROTECTION:
Riprap protection in the immediate vicinity of the energy dissipater is recommended. Riprap protection can be provided to control the erosion of the channel bed due to high velocities at any outlet structure.
As per U. S Army Waterways Experiment Station,
D50 = The min. avg. size of stone in ft, whereby 50 percent by weight of the graded mixture is larger than this size
D = Depth of flow in the outlet channel (ft)
V = Avg. velocity in outlet channel (ft/sec)
g = Gravitational acceleration (ft/sec2)
Riprap protection in the immediate vicinity of the energy dissipater is recommended. Riprap protection can be provided to control the erosion of the channel bed due to high velocities at any outlet structure.
As per U. S Army Waterways Experiment Station,
D50 = The min. avg. size of stone in ft, whereby 50 percent by weight of the graded mixture is larger than this size
D = Depth of flow in the outlet channel (ft)
V = Avg. velocity in outlet channel (ft/sec)
g = Gravitational acceleration (ft/sec2)
