What Size Vent Pipe Is Needed For A Toilet. The required size of the drain shall be determined in accordance with Table 71012. According to my hand book the minimum pipe size required to vent a toilet is.
So a vent pipe the same diameter as the building sewer needs to connect from the drainage system and extend through the roof undiminished in size. So a vent pipe the same diameter as the building sewer needs to connect from the drainage system and extend through the roof undiminished in size. Consulting IPC Table 9161 see Figure 4 we see that for a 4 waste stack with a dfu up to 140 and with 27 or less of vent piping length the correct vent pipe size is 2.
Dec 21 2007.
Vent pipes still common in houses. One popular way to meet this requirement is by plumbing one toilet with a 3 or 4 inch vent. In a nutshell the UPC wants the building sewer to be properly vented. Again use PVC glue to do this.
