Siphonic Roof Drains
Siphonic Roof Drains
(OP)
Has anybody used these in a design?
I have a project where we might want to use them, but I have never designed for this.
I have information on how, but I want to get some feedback from engineers who have used them and what to look out for.
Thanks
I have a project where we might want to use them, but I have never designed for this.
I have information on how, but I want to get some feedback from engineers who have used them and what to look out for.
Thanks





RE: Siphonic Roof Drains
We have been using siphonic roof drains in the UK for 20 years. We even have a Siphonic Roof Drainage Association - SRDA.
Advantage is that you can get away with fewer down pipes and you don't need any fall on collector pipe - you can run horizontal. Problems occur if inlets are damaged allowing air to enter and preventing the siphon from priming.
I would expect if you post on the civil forum you will be more likely get a response from someone who has used them - I only know of them
RE: Siphonic Roof Drains
I posted it here since almost nobody goes to the plumbing engineering forum - which is where it should be posted.
I didn't post it on the Civil forum since here in the US, they don't usually do the building stuff.
I will wait awhile and see if anybody else notices it.