How to determine Bathroom Fixture Counts
In this last section of our four part series we will find out how to properly determine the fixture counts for our bathrooms. So, is it bathrooms or bathroom?
Well let’s take a look at Section 412.3 Exceptions 1, 2, and 3, of the California Plumbing Code (CPC) for the answer. The exception allows for two conditions, one, if you are less than 10 occupants, or two, if you are a Group B occupancy with less than 1,500 total square feet. Than you may have a single-facility restroom.
In part two of this post we mentioned that you could reduce the Tasting Room Group A-2 occupancy to a Group B occupancy provided you met the requirements in Section 303.1 1, 2, or 3. This is where we can take advantage of those requirements, if you prefer to have a single-facility restroom.
For example, a Tasting Room of 300 square feet using a Group A-2 occupancy as standing room only (5 net) the resulting occupant load would be 60 occupants. Due to the high occupancy load of 60 Section 412.3 of the CPC Exception 1 would be eliminated. However, Exception 2 would still be viable. 300 square feet is less than the 1,500 square foot threshold. So, in this case I would only need a single-facility restroom.
Section 412.1.1, defines the fixture count and conditions for a single-facility restroom.
“Effective January 1, 1990, in new construction and those existing facilities which occupancy type are listed in Tables 4-1 and 4-4 for public use, which apply for permit to undertake construction, structural alterations, repairs or improvement which exceed 50 percent of the square footage of the entire facility, shall install water closets, urinals, lavatories and drinking fountains as stipulated in Tables 4-1 and 4-4 for public use. Community and/or municipal parks with a bleacher capacity not exceeding 500 seats shall be exempt from the requirements of this section and Tables 4-1 and 4-4. Each bathroom shall comply with Part 2, Chapters 11A and 11B of the California Building Code.”
For cases with separate men and women bathrooms simply divide your occupant load in half, 50% for men, 50% for women and follow Table 4-1
Well, this series of posts were highly technical and a tough read, even for me. There are a few other pitfalls and tricks that need to be navigated along the way, but that’s what were here for.
What do you think about this guide? Let us know in the comments below.
A Step by Step Guide to Maximizing your Brewery Tasting Room Occupancy – Part 1 of 4
How to define room occupancy classifications.
A Step by Step Guide to Maximizing your Brewery Tasting Room Occupancy – Part 2 of 4
Mixed Use and Occupancy; How to understand occupancy separations.
A Step by Step Guide to Maximizing your Brewery Tasting Room Occupancy – Part 3 of 4
Determining your maximum occupant load.
A Step by Step Guide to Maximizing your Brewery Tasting Room Occupancy – Part 4 of 4
How to determine Bathroom Fixture Counts.