Roof drain branch intervals

[Nanmer]

Is there a limit on how many branch intervals a rd stack can have on one floor?

 

[Reach4]

I am not sure what your purpose for the picture is (entertainment?). Looks like a parking garage, and that is therefore likely rainwater collection rather than sanitary plumbing.

 

[Sponsor]

 

[Nanmer]

I am not sure what your purpose for the picture is (entertainment?). Looks like a parking garage, and that is therefore likely rainwater collection rather than sanitary plumbing.

I'm curious if that is even allowed. Can't find anything saying it isnt.