This DWV Sizing Calculator is based on Table 7.5 of the 2021 Uniform Plumbing Code (UPC) and helps compute fixture unit load values for drainage and vent piping from Tables 7-3 and 7-4.
We're Here To Help
Call us anytime during our customer service hours...
Monday through Friday - 8:30 am to 4:30 pm (Pacific) Saturday - 9am to 1pm (Pacific)
Order Questions:
TOLL FREE, 800-273-7375 (Outside the U.S. call 818-887-7828).
Our Address:
8001 Canoga Avenue Canoga Park, CA 91304 US Phone: 800-275-2665