1D Pits: Difference between revisions
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<br>[[File:Figures 1 2.jpg|850px|]]<br>
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<br>The equations given in Section 5 of the [https://new.sthelens.gov.uk/media/330117/5126_ha-102_00.pdf guidance] can be used to determine flow capture rates at different depths, to determine the depth-discharge curve for use within TUFLOW. The method requires the calculations of the
*As a first step, a gully grate type: P, Q, R, S or T should be selected. The selection of the grating type will determine the design value ''G<sub>d</sub>'' (grating parameter) from '''Table 2'''. (For more details, please see Annex B of the [https://new.sthelens.gov.uk/media/330117/5126_ha-102_00.pdf guidance]).
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The Spacing of Road Gullies Excel file above includes a calculation tab which can be used for the completion of the calculation process. Based on calculations and Equations (11) and (12) of the [https://new.sthelens.gov.uk/media/330117/5126_ha-102_00.pdf guidance] the gully flow capture rate can be calculated.
'''Key assumption'''<br>'''Note:''' This method assumes that the route the flow takes around the trap limits the discharge from the gully pot to 10 l/s. This limit is effective in both directions, so any
== UK Water Industry Research (UKWIR) Inlet Capture Tool ==
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