Causeway Flow - How to model a permeable carpark

[@terrywilkinson809]

Another brilliant video Ferdi, thank you so much for posting, these are really helpful. Any chance of a future Flow video showing the best way to model linear drainage channels? Thanks again and keep up the great work!

[@CivilTechSource]

Hey Terry, thanks for your comment! Modelling a drainage channel..Will definitely have to up my game for this one! But definitely will add it on the list, the next tutorial on flow is link type open user defined.

[@Stevejeffreys469]

Great video!! I’ve used micro drainage for years and you make flow seem so easy! Could you do a video on designing a soakaway on flow please?

[@CivilTechSource]

Yes I can!

[@zyang8780]

very helpful. more FLOW videos please :)

[@CivilTechSource]

Glad you find it helpful, will do my best to roll more content out.

[@stedroyallen7807]

Is there a way to design a pond/lake in FLOW?

[@CivilTechSource]

Yes you can, you can either design the pond in PDS and import it to flow or use flow+ to create a pond in flow directly

[@fizmo303]

Type 3 is permeable, or you can use OGCR

[@CivilTechSource]

Thank you!

[@thegunman128]

What was that smartblock you had for the pavement buildup at the start? Looked really useful!

[@CivilTechSource]

Hi see my other video for this kzbin.info/www/bejne/goPdm6yOqLGcbdE

[@thegunman128]

@@CivilTechSource Thanks!

[@Jammy25D]

Is it possible to model baffle structures within steeply sloping car parks? Also, the sub-base for permeable paving is usually type 3 (sometimes referred to as open-graded crushed rock) as type 1 is too well-graded and is effectively impermeable.

[@CivilTechSource]

Hi Jamie, thanks for your comment! Well spotted. In regards to the baffle structures, not sure we are there yet. It appears that hydraulic modelling is something that is tough to crack.

[@thepongopete]

You would need to add a series dummy chambers into the carpark structure at the frequency of your baffles and insert a weir flow control onto each node to represent your check dam/baffles. So effectively you will break up your carpark into a series of smaller structures, separated by flow control nodes... This principle can also be adopted when modelling swales adjacent to steep carriageways for example. Hope that helps!

[@CivilTechSource]

That is a very smart work around it. However, i feel it is an overkill in terms of design/resourcing, maybe?

[@thepongopete]

​@@CivilTechSource yeah it is a bit labour intensive but I've been forced to provide that level of detail by some LLFA's and highway authorities before!

[@vctr196]

Great video ! thanks

[@CivilTechSource]

Thank you!

[@jakubmatveev5487]

Hello my friend! Do you happen to know if the level of surcharged outfall specified in hydrographs is A.O.D. level? i.e. Datum = sea level = 0.0m? Help file doesn't specify that. Although it seems pretty obvious, certain person (which types on keyboard with two fingers) doesn't believe me.

[@CivilTechSource]

Hi buddy! Hope you have been keeping well. All levels should be A.O.D. datum being the sea level. Is the surcharge of a river?

[@jakubmatveev5487]

No, it's tidal flooding in case of the site I'm working on.

[@coisjvr777]

Thanks for the video. You didn't cover the infiltrations rates which is a big factor with permeable paving.

[@CivilTechSource]

I know, I will make a separate video on infiltration rates on flow.

[@frankie3613]

Type 3

[@CivilTechSource]

Thank you!