Salient Features

 Design of gravity stormwater drains based on Manning’s equation for flow velocity.

 It is possible to design drains for a velocity that is both non-silting and non-scouring.

 The software allows users to set upper and lower limits for velocity.

 Stormwater drains can be configured in rectangular, trapezoidal, and circular shapes.

 Enables users to input freeboard either as an absolute value or as a percentage of the drain depth/diameter.

 Utilizes rainfall intensity, site parameters, and drain slope to determine the drain cross-section needed for the required discharge and velocity.