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Width_or_Dia: Sets the width of the pit inlet section in the vertical plane. <br>
Height_or_WF: Sets the height of the pit inlet channel in the vertical plane.
|| [[File:003 Side entryEntry pit dimensions.jpg|300pxalt=|left|thumb|none300x300px|Kerb Inlet with dimensions]]
|-
! C
Width_or_Dia: Sets the diameter of the pit inlet cross-section in the vertical plane.<br>
Height_or_WF: Not used.
|| [[File:003 Circular pit inlet dimensions.jpg|300pxalt=|left|thumb|none300x300px|Circular Pit Inlet with dimensions]]
|-
! W
| [[File:Gully pit.jpg|thumb|none|300px|Grate (London, UK)]]
|| Grates, also known as Gully Pits, 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.<br><br>
Width_or_Dia: Sets the width of the pit inlet section in the vertical plane. The width is the total width in the direction of flow to the pit. For example, a gully pit may include all sides of the pit whereas an on grade pit may only include one.:<br>
* Case 1 - a gully pit may include all sides of the pit.
* Case 2 - an on grade pit may only include one side.<br>
Height_or_WF: Not used.<br>
|| [[File:006 CASE 1 Gully pit dimensions.jpg|300pxalt=|left|thumb|none300x300px|Case 1 - Grate with dimensions]][[File:006 CASE 2 Gully pit dimensions.jpg|alt=|left|thumb|300x300px|Case 2 - Grate with dimensions]]
|}
= Pit Inlet Data Sources =
Pit inlet depth-discharge data can be obtained from a variety of sources. The most common typically being from suppliers or local agencies who enforce consistent design standards within their jurisdiction. For demonstration purposes, examples from Sutherland Shire Council and Brisbane City Council are provided below.
== HEC22 ==
The HEC-22 method applies standard hydraulic relationships from the [https://www.fhwa.dot.gov/engineering/hydraulics/library_arc.cfm?pub_number=22&id=189 <u>Urban Drainage Design Manual, Hydraulic Engineering Circular No. 22 (2004)</u>] to estimate how much surface flow is captured by a pit and how much bypasses.
== Sutherland Shire Council ==
The Sutherland Shire Council Urban Drainage Manual (1992) includes summary tables and graphs documenting pit grate and lintel capacity information for on sag situations (derived from Department of Main Roads testing). The guidelines are compatible with the standard pit grate and lintel design shown below:<br>
[[File: Pit_Inlet_Curves_SSC000.JPG|700px]]<br>
The capacity of a pit depends on three factors:
[[File: BCC_BSD-8082.JPG|border|700px]]
[[File: BCC_BSD-8052.JPG|border|700px]]<br>
== South Australian Road Stormwater Drainage Inlets: Hydraulic Study (University of South Australia)==
The Urban Water Resources Centre (UWRC) at the University of South Australia conducted a comprehensive set of hydraulic studies, examining performance of the most common roads’ stormwater drainage inlets in use in South Australia. The study was carried out using the Centre's unique full-scale road surface drainage test rig. Links to the pipe inlets curves are provided in the following link and sections below: <u>[https://www.unisa.edu.au/research/sustainable-infrastructure-and-resource-management/australian-flow-management-group/stormwater-drainage-hydraulic-study/ Hydraulic Study (University of South Australia)]</u>
=== Transport South Australia ===
<u>[https://www.unisa.edu.au/research/sustainable-infrastructure-and-resource-management/australian-flow-management-group/stormwater-drainage-hydraulic-study/transport-sa/ Transport South Australia Pit Inlet Curves]</u>
=== City of Adelaide ===
<u>[https://www.unisa.edu.au/research/sustainable-infrastructure-and-resource-management/australian-flow-management-group/stormwater-drainage-hydraulic-study/city-of-adelaide/ City of Adelaide Pit Inlet Curves]</u>
=== City of Campbelltown ===
<u>[https://www.unisa.edu.au/research/sustainable-infrastructure-and-resource-management/australian-flow-management-group/stormwater-drainage-hydraulic-study/city-of-campbeltown/ City of Campbelltown Pit Inlet Curves]</u>
=== City of Charles Sturt ===
<u>[https://www.unisa.edu.au/research/sustainable-infrastructure-and-resource-management/australian-flow-management-group/stormwater-drainage-hydraulic-study/city-of-charles-sturt/ City of Charles Sturt Pit Inlet Curves]</u>
=== City of Onkaparinga ===
<u>[https://www.unisa.edu.au/research/sustainable-infrastructure-and-resource-management/australian-flow-management-group/stormwater-drainage-hydraulic-study/city-of-onkaparinga/ City of Onkaparinga Pit Inlet Curves]</u>
=== City of Playford ===
<u>[https://www.unisa.edu.au/research/sustainable-infrastructure-and-resource-management/australian-flow-management-group/stormwater-drainage-hydraulic-study/city-of-playford/ City of Playford Pit Inlet Curves]</u>
=== City of Port Adelaide / Enfield ===
<u>[https://www.unisa.edu.au/research/sustainable-infrastructure-and-resource-management/australian-flow-management-group/stormwater-drainage-hydraulic-study/city-of-port-adelaideenfield/ City of Port Adelaide / Enfield Pit Inlet Curves]</u>
=== City of Marion ===
<u>[https://www.unisa.edu.au/research/sustainable-infrastructure-and-resource-management/australian-flow-management-group/stormwater-drainage-hydraulic-study/city-of-marion/ City of Marion Pit Inlet Curves]</u>
=== City of Mitcham ===
<u>[https://www.unisa.edu.au/research/sustainable-infrastructure-and-resource-management/australian-flow-management-group/stormwater-drainage-hydraulic-study/city-of-mitcham/ City of Mitcham Pit Inlet Curves]</u>
=== City of Salisbury ===
<u>[https://www.unisa.edu.au/research/sustainable-infrastructure-and-resource-management/australian-flow-management-group/stormwater-drainage-hydraulic-study/city-of-salisbury/ City of Salisbury Pit Inlet Curves]</u>
=== City of Tea Tree Gully ===
<u>[https://www.unisa.edu.au/research/sustainable-infrastructure-and-resource-management/australian-flow-management-group/stormwater-drainage-hydraulic-study/city-of-tea-tree-gully/ City of Tea Tree Gully Pit Inlet Curves]</u>
=== City of West Torrens ===
<u>[https://www.unisa.edu.au/research/sustainable-infrastructure-and-resource-management/australian-flow-management-group/stormwater-drainage-hydraulic-study/city-of-west-torrens/ City of West Torrens Pit Inlet Curves]</u>
== Spacing of Road Gullies (UK standards: BS EN 124 and BS7903) ==
<br>
AnyShould you have any further questions, please email TUFLOW support: <u>[mailto:support@tuflow.com?Subject=TUFLOW%201D%20pits%20help support@tuflow.com]</u>
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