1D Pits: Difference between revisions

| [[File:Gully pit.jpg|thumb|none|200px|Grate (London, UK)]] || width="300pt"|Grates, also known as Gully Pots, are common in the United Kingdom and are generally a square grate on top of a circular chamber and a riser outlet. The outlet will then feed into a larger culvert that forms part of the larger urban drainage network. The grate variation and sizing can influence the rate of inflow into the pit, therefore it is important to consider this when developing the depth-discharge relationships.

| width="300pt"|[[File:Side_Entry_pit.jpg|thumb|none|200px|Lintel (http://www.lgam.info/side-entry-pit)]]|| width="300pt"|Lintels, also know as side entry pits are common in Australia. The pit chamber can vary depending on overall depth, length and the additional of any haunched riser units and the size of the underlying drainage network that pits are typical directly connected to. Refer to any local drainage guidance on developing depth-discharge relationships.

Pit inflow information is defined within TUFLOW via user defined pit inlet curves. This approach allows for unlimited flexibility, as opposed to hardcoded pit types and dimensions. Any pit design or configuration can incorporated into a TUFLOW model if the inlet depth/flow-discharge relationship is known. Refer to supplier specification documentation or local drainage guidance for developing depth-discharge relationships. Examples are provided in the following section.