Stormwater Two-Ramp Drop Structures
The chapter summarizes the hydraulic characteristics of the latest type of drop structure - two-ramp drop structure - used for diverting flows from near-surface storm-sewer systems to underground storage tunnels. A series of physical model studies were conducted. This drop structure can be constructed by a tunneling technique that can be more suitable in urban areas where an open-cut construction may be expensive and infeasible.
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