1D Pits: Difference between revisions
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= 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:
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