ICPR Modeling Tips - Drop Structure Links

A drop structure link in ICPR is a composite structure consisting of one or more weirs (including orifices, sluice gates, etc.) in series with a pipe.  These types of structures are popular for controlling water levels and rates of discharge from detention ponds.  A typical drop structure is shown in the photograph below.  A standard inlet structure was modified opening the front face.  Water spills through the "weir" opening and drops to the bottom of the catch basin.  From there, water flows through a pipe and under a berm to another pond in the drainage system.  This particular structure includes flashboards (shown on the top of the structure).  The flashboards can be slid into the slots on the face of the opening to block off a portion of the opening.  These can be modeled as bottom clips in ICPR.

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An input sequence for drop structures in presented in the slide show below.

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