Drainage Design
4 results found
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Output Cv values
Cv values used to be set globally and would be output as part of the simulation criteria, so the values that were used were always visible in results files for LPA/LLFA officers to check that the model complied if a 0.9 or 0.95 Cv was requested as many authorities now do.
Now the Cv values are per catchment, so if I need to change them to suit an authority's requirements I have to do it manually on many items, and it's hard to output them to prove to the authority that I have followed their requirements.
It would be great…
2 votesThe report that is automatically generated by InfoDrainage has this detail when you tick Inflows (see screenshot attached). InfoDrainage will report on every subcatchment and detail what CV values have been used for summer and winter.
Does the above address your suggestion?
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SuDS and Inlet Level sync stepdowns
Infodrainage 2023.2
Inlets into SuDS features need to be able to be different from the SuDS features bed level.
It is almost always necessary to have a step down between inlets and outlets on Ponds and Swales etc.2 votesThank you for the suggestion and thanks to those who commented and voted.
The inlet pipe will always try to sync to the bed level of your Storm Water Control (SWC), however, you can easily lock the pipe and manipulate the level so your inlet pipe can be higher and your outlet pipe can be lower. You can introduce inlet and outlet chambers and you will have full flexibility in dropping the levels as required.
Does the above address the issue?
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Velocity and proportional velocity to be shown on Tables
When designing sewers a critical design criteria is the pipe velocity when full or at design discharge rate. It makes designing sewers quite iterative without this included
5 votesThank you for the suggestion and thanks to those who commented and voted.
In order to get rid of the dendritic numbering system that was in MicroDrainage which prevented users from modelling bifurcation, we had to introduce the design wizard rather than an optimise button that looked at the whole system. This means that users will have to run a design wizard to check the velocities. However, we've introduced various flexibilities for turning on and off design criteria parameters which will make these iterations easier.
Does the above address your suggestion?
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Realistic ground profile for swales
This is a flaw that's been going since MicroDrainage, but when you change the type of a connection from a pipe to an open channel, like a swale, there's no information at all provided about the actual size of that feature.
I had one come in the other day, only attenuation on the whole site was in a swale. Parameters for the swale has been set 0.5m base width, 1:3 side slopes, Mannings n 0.03, everything normal and okay with this, right?
But the manholes at the top and bottom of the link that had been turned into the swale…
2 votesThank you for the suggestion and thanks to those who commented and voted.
If you try to build your swales using the SWCs rather than converting links to swales, you will see that you can start from the top area and go down (1:3) or you can start from the bottom and go up (1:3).
Does the above address your suggestion? I'd be interested to hear your thoughts once you try it.
