Design Network to Working Loads Storm A range of Rational Method formats is supported to design networks to pipe full conditions. Any shaped section may be analysed. Results are updated on input with instant feedback. Typically pipes are designed to accommodate return periods of between 1 and 5 years. Foul Main drainage design methods and discharge unit methods (EN752) are supported for domestic, industrial and process drainage. The procedure for foul (or sanitary) drainage design is similar to storm drainage. The data is passed to QuOST for further analysis (see below). Simulation should also be used if the system is combined.   Click on image for larger view