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#173836 01/20/08 11:14 AM
Joined: Jul 2001
Posts: 311
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When applying the NEC, is a municipal firehouse considered a dwelling unit. It appears as if it is, according to the definition of dwelling unit given in article 100.

Frank

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Joined: Jan 2001
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It looks like the firehouse meets the NEC definition to me, too. You might want to look into the Life Safety Code since this is also a mixed occupancy. The NEC requirements for dwellings might only apply to the areas that involve sleeping, cooking, bathrooms.



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Joined: Jul 2007
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A firehouse IMO is multiple occupancy. Typically in a situation is when you have a conflict in the rules, typically the more sticter prevails. The Life Safety codes are only applicable if it is adopted like the electrical code ot a building code. At a minimum though they can shed light on the matter pending what you are trying to address. You may want to contact the AHJ if you have codes overlapping.


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Out this way, a firehouse is often a light steel garage, a 'manufactured home,' and a covered passage between the two. In that design, it's pretty simple to separate the structure into different occupancies.

Joined: Jul 2001
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F
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Our building code department indicated it was a class "B" occupancy; but didn't expand on it.
Also, when calculating the service size for a new "mixed occcupancy" building what does the design professional use, the residental standard calculation or commercial calculation?

Frank

Joined: Jul 2007
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Typically they use comercial calculations, for example 180VA per recept, 100%DF on lighting loads, etc.


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