Catch Basin in Parking Garage
Catch Basin in Parking Garage
(OP)
I am working on a drainage system for a 3 acre site in Florida. All of the catch basins are interconnected and empty out into a control structure and eventually a canal. However, one the CB furthest upstream is located at the lowest point of a 3 story parking garage. I've run my hydraulic grade line from the outlet upstream to the catch basin, and it appears to be below the grate. However, I need to prove that water is not going to bubble up out of this catch basin. The drains from the 2nd & 3rd floors of the garage tie into this catch basin. Is there way I can prove on paper that These flows will not create a jump in the basin, hence causing minor flooding. It's my first time going through drainage calcs., so I apologize if I have not spelled out the problem clearer.
Thanks
Gee
Thanks
Gee





RE: Catch Basin in Parking Garage
Do you have combined sewers?
Mike McCann
MMC Engineering
RE: Catch Basin in Parking Garage
In my area, its just the opposite, tying into the sanitary sewer is a big NO-NO.
RE: Catch Basin in Parking Garage
RE: Catch Basin in Parking Garage
RE: Catch Basin in Parking Garage
Also, are there any refeneces you may know of for using the appropriate size catch basin size/type based on the Q in cfs?
Thanks for everyones help by the way; ogreat suggestions
Gee
RE: Catch Basin in Parking Garage
RE: Catch Basin in Parking Garage
RE: Catch Basin in Parking Garage
RE: Catch Basin in Parking Garage
I think the proper term is a back water valve. There is a big difference.
Backwater valves are used on the inside plumbing and sometimes on the first catch basin to prevent water from coming back inside the building. It typically more prefered to have the exterior system overflow than the interior system - although in a parking garage the difference might be moot.
RE: Catch Basin in Parking Garage