I am adding a bathroom directing above an existing bathroom. I am trying to determine the size of my waste pipe. Given that I vent all fixtures properly, is a 3" PVC pipe large enough for two baths?
I have calculated the DFUs for two toilets (3 DFU each), two sinks (2 DFU each), one bath tub (3 DFU) and one shower (2 DFU). This equals 15 DFU.
I have a kitchen sink and diswasher that run into the same waste pipe for another 4 DFU.
A vertical three inch pipe can handle 48 DFU. This is well above the 19 DFU that I need.
Let me know if I'm thinking correctly on this.
Thanks,
I have calculated the DFUs for two toilets (3 DFU each), two sinks (2 DFU each), one bath tub (3 DFU) and one shower (2 DFU). This equals 15 DFU.
I have a kitchen sink and diswasher that run into the same waste pipe for another 4 DFU.
A vertical three inch pipe can handle 48 DFU. This is well above the 19 DFU that I need.
Let me know if I'm thinking correctly on this.
Thanks,