Re: First Time Pool Owner (Houston Pool Build)
Thanks Nectarologist!
I just did that and am surprised, so I want to make sure I understand this right.
With 3000 sf of roof + 1000 sf of concrete patio (both rounded up a bit) for a total of 4000 sf impervious area, with the 25 Year Rainfall Rate of 3.0, the outcome is 124.71 gpm.
And looking at this calculator it appears that a single 4" pipe at 3 % grade can handle 127.9 gpm, so technically 1 x 4" pipe would already suffice?
Drainage Calculator by Pipe Size Prinsco, Inc
We plan on putting two 4" pipes (one on each side of the house) going to the street, so we should be well covered? Or would you to be safe just upgrade to a 5" pipe?
Thanks Nectarologist!
I just did that and am surprised, so I want to make sure I understand this right.
With 3000 sf of roof + 1000 sf of concrete patio (both rounded up a bit) for a total of 4000 sf impervious area, with the 25 Year Rainfall Rate of 3.0, the outcome is 124.71 gpm.
And looking at this calculator it appears that a single 4" pipe at 3 % grade can handle 127.9 gpm, so technically 1 x 4" pipe would already suffice?
Drainage Calculator by Pipe Size Prinsco, Inc
We plan on putting two 4" pipes (one on each side of the house) going to the street, so we should be well covered? Or would you to be safe just upgrade to a 5" pipe?