In NFPA 13R you are only required to provide fire sprinklers in a bathroom if it is over 55 Square Feet. When calculating the square feet of the space do you include the bathtub/shower area in the calculation or not.
Yes, read the definition of a bathroom.
Which year edition of 13 R are you using?
OHHH I am not an engineer, so you can discount my reply if you want, and I cannot do math.
The 2016 addition I have read the sections. But I can find the portion that distinguishes the tub or shower.
3.3.1 * Bathroom.
Within a dwelling unit, any room or compartment containing a lavatory dedicated to personal hygiene, or a water closet, or bathing capability such as a shower or tub, or any combination of facilities thereof.
A room is still considered a bathroom if it contains just a toilet. Additionally, two bathrooms can be adjacent to each other and are considered separate rooms, provided they are enclosed with the required level of construction.
From NFPA 13 2013:::
Sprinklers shall not be required in bathrooms that are located within dwelling units of hotels and motels, that do not exceed 55 ft2 (5.1 m2) in area, and that have walls and ceilings of noncombustible or limited-combustible materials with a 15-minute thermal barrier rating, including the walls and ceilings behind any shower enclosure or tub.
Am I missing your question?? if so restate
To restate the question. Ok. so when you are calculating the square footage of a bathroom do you add the footage of the tub or shower are. In most bathroom (hotels) the footage of the bathroom is right at 55 or 56 square feet with the area that is occupied by the tub. But if you take that area out it is under the amount. So my questions is it right to count that area or use the space outside of that tub. The NFPA does not say either way or does it.
Yes by definition it is included
Not sure what this says,will have to look at 13r
Are Bathtub or Shower Enclosures included in the 55 sqft limitation?
Yes; they are typically considered part of the room as NFPA 13R-2002 introductory material clarifies.
does a walk in shower counts in the bathroom area calculation to determine if you need a sprinkler in a residential apartment?
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