DWV Pro — Support

DWV Pro is a drain, waste & vent sizing calculator for plumbers and inspectors, based on the International Plumbing Code (IPC).

Contact

Questions, corrections, or feedback? Email tprippy@gmail.com. If you spot a table value you believe is wrong, please include the code table and reference.

Frequently asked questions

Which code does DWV Pro use?
The International Plumbing Code (IPC): fixture units (Table 709.1), drain/sewer & branch/stack sizing (Tables 710.1), minimum slope (Table 704.1), and vent sizing (Table 916.1).

Can I rely on it for permit work?
DWV Pro is a professional estimating and reference tool. It is not a substitute for a licensed engineer or your local authority having jurisdiction. Always verify against your locally adopted code before installation or inspection.

Do you support the UPC?
IPC is supported today. A UPC table set is planned for a future update.

Privacy

DWV Pro does not collect, store, or transmit any personal data. No account, no analytics, no network access — it works entirely offline.