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Quick Guide

How to Use the Calculator

  1. 1.Select the NYC Building Code version (2008, 2014, or 2022) you need to follow.
  2. 2.Choose the occupancy type from the dropdown menu.
  3. 3.Select the specific occupancy description that best matches your project.
  4. 4.Enter the total number of occupants for that space.
  5. 5.The calculator will automatically compute the required number of fixtures based on the code requirements.
  6. 6.Add multiple occupancy types if your project includes different spaces (click "ADD OCCUPANCY").
  7. 7.Export your results to Excel for documentation by clicking "EXPORT XLS".

Special Rules

  • • Drinking fountains are not required for occupancies with 15 or fewer people.
  • • Restaurants are exempt from drinking fountain requirements.
  • • Male and female occupant loads are automatically distributed equally.
  • • The calculator shows both the decimal number of fixtures and the rounded-up values required by code.

Calculation Method

The calculator applies the fixture-to-occupant ratios specified in Chapter 4 of the NYC Plumbing Code. For multi-tier requirements (different ratios at different occupant thresholds), the calculation handles each tier appropriately.

Final fixture counts should be rounded up to the next whole number, as shown in the totals row of the results table.