How to use this result
Use only after civil, plumbing and building-envelope review.
Capacity
The tool does not size drains, pipes or pumps.
Discharge
Confirm lawful discharge points and local stormwater requirements.
Important: Requirements, permits, accessibility duties, environmental rules, workplace-safety obligations, product standards and inspection practices vary by country, province or state, municipality, building use, existing conditions and adopted code edition. Qualified local professionals and the authority having jurisdiction must determine what applies.