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‘Hydro’ is a purpose written, hydraulic design program modeled on differential calculus for non-uniform flow in open channels. The program was created from empirical data, following a series of experiments modeling lateral intake into trenches. Analysis of the effect of slope, run length, and trench cross sectional profiles were incorporated into the program.

Complex scenarios such as the effects of water inflow from down spouts or inlets along the length of the trench can also be modeled by the ‘Hydro’ program. ACO can use ‘Hydro’ to recommend optimum outlet positions along trench runs.

To generate results from the ‘Hydro’ program, the following information is required:
Length of trench run (feet or meters)
Length and width of catchment area (feet or meters)
Surrounding pavement/surface type, e.g., concrete, asphalt, etc.
Rainfall intensity (in/hr or mm/hr)
Ground fall along trench (%)
Perpendicular approach slopes to trench (%)
Preferred position of outlets along trench and any outlet size restrictions
Any slab depth restrictions

Results are provided either electronically (PDF) and/or in printout format.

To request this service, click here.

'Hydro' plot shows:

Position and size
of minimum 'freeboard' (gap between top of trench and top of liquid in trench).
  The hydraulic profile of the liquid   Flow velocity and flow rate at any point along the trench   Maximum discharge
capacity of the channel run. (1,395 GPM - 88 l/s from example below)
  Hydraulic utilization of trench (%) is given. If over 100% flooding occurs. (47.68% from example below)
 

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