@tatyana.swift Great question. The rule of thumb for these types of code requirements is to round up. You typically want to make sure that you are providing enough plumbing fixtures or egress width for the maximum number of people.
If your occupancy is 44 people and you have to provide 1 water closet for every 10 people you would provide 5 water closets. 4 for the first 40 (40/10 = 4) and 1 for the remaining 4 people.
You would provide 4 trees to make sure you have one every 20 feet.
If you calculate your occupancy at 49.3 you would round up to 50.
This way you are complying with the strictest interpretation of the code.
@tatyana.swift Good follow up! For the toilet count you would start by dividing 44 by 2, per 2902.1.1 of the code. So you would have 22 women and 22 men. So using the same rule of 10 water closets per person you would have 3 for the women and 3 for the men. To break that down, that would be 2 for the first 20 (20/10=2) and 1 for the remaining 2 in each case.
When calculating occupancy you want to round up, as you can’t have a partial occupant and need to err on the side of caution (which means accounting for more people needing to exit the space) when it comes to occupancy.
You can read more about why you round up in this specific situation in the thread below:
Check out some other related ‘round up or down’ threads at the links below: