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TUFLOW 1D Channels and Hydraulic Structures: Difference between revisions

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== How can I read approach-capture flow curves for on-grade pits into TUFLOW? ==
TUFLOW currently doesn't support the use of approach-capture flow curves directly. ToManning's getequation aroundcalculations this,can pitbe depthused to convert on-grade approach flow curveinformation relationshipto cana bewater deriveddepth asat follows:the pit. ARR 2019 Guidelines (Section 5.6.1, Chapter 5, Book 9) recommends using the modified Mannings equation, the Izzard's equation, for gutter and roadway flow.
 
* Select a few representative slope increments for the project area and do a Manning's equation calculation for each to calculate the gutter flowrates for incrementally increasing flow depths. ▼
The pit depth-flow curve relationship can be derived as follows:
* Multiply the above flows by the % value in the on grade curve. This turns the % capture vs. flow curve into a depth vs. flow relationship.▼
▲* Select a few representative slope increments for the project area and doconduct a Manning's equation calculation for each slope to calculate the gutter flowratesflow rates for incrementally increasing flow depths.
* Repeat for different gutter shapes.▼
▲* Multiply the abovecalculated flows by the % value in the on grade curve. This turns the % capture vs. flow curve into a depth vs. flow relationship.
▲* Repeat for different gutter shapes.
 
== Should I model culverts in the 1D or 2D domain? ==
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