Property Drainage Example with Underground OSD Tank, Merimbulah, NSW

Property Drainage Example with Underground OSD Tank, Merimbulah, NSW

The file for this example, Merimbulah Apartments Property - Lite.drn, is located in the folder C:\ProgramData\Drains among the Lite examples. If this folder is hidden, in File Explorer select the View tab and tick the Show Hidden Items box to make it visible.  

This example describes a property drainage system with downpipes modelled as pits. The surface levels at nodes can be roof gutter levels or ground surface elevations. Since both above- and below-ground pipelines may need to be designed, it is necessary to specify the invert levels and size of the first pipe in each branch. This model also includes an underground OSD tank with a sump and access shaft.



Results for detention basin HGL levels are shown below:



As shown below, pipe long-sections may show roof gutter or surface levels, with the Survey Levels option in the Pipe property sheet being used to add points that clarify the long section plots by showing the edges of buildings.