Is there any NFPA document that relates to, or requires fire rating of mech rooms, i.e. rated partitions & doors?
There are probably lots of them. NFPA-70 (for example) requires rooms with certain types of transformers to have a 1-hour rating. Transformer vaults however, require a 3-hour rating and studs and wallboard construction shall not be permitted. I believe that there could be many NFPA documents that can apply, depending upon the occupancy, and what is being installed, etc., etc.
Thanks for replying, but 70 is primarily for Elec Rms.
I will make a note of it (for example).
NFPA 90A Standard for the Installation of Air-Conditioning and Ventilating Systems, describes some situations where a mechanical plant room should be fire rated for example, if a mechanical plant room is connected to a riser shaft, it's possible to avoid providing fire dampers on the connection to the riser by fire rating the plant room.
Will keep 90A for code cks of Mech Rms.
The primary document to start with is the building safety codes in NFPA 5000 and NFPA 101. Based on the occupancy of the building, the mandatory requirements for mechanical room requirements will in those codes. The codes may reference, if any, NFPA standards for mechanical rooms. Usually there is no single document for exclusively for mechanical rooms.
Here is brief compendium I use for reviewing mechanical rooms in the 2012 NFPA 101:
Some mechanical rooms require hazardous are protection in the occupancy chapters:
Your reference list from 2012 NFPA 101 is a great guide for anyone who has to fumble thru the numerous codes NFPA has.
Also see IBC (2015) Table 509 of Incidental Uses, particularly the first three:
1) Furnace room with any equipment > 400 MBtu/hr
2) Rooms with boilers over 15 psi and 10 HP
3) Refrigerant machinery room
These all need to be either 1-HR construction or provide an automatic sprinkler system, and for the latter, the room must resist the passage of smoke. See the actual code text for more info. Hope this helps.
Yes, I noticed IBC Table 509. A good guide.
The best way to answer the question is to review what type of equipment is being installed in the mechanical room, then go to the various NFPA or ICC Standards for the equipment. The room could require a 2 hour rating, a 1 hour rating, or no fire rating.
I agree, its the content within the room that will drive applicable fire ratings.
Check NFPA 13 for occupancy classification, check relevant NFPA for room design like NFPA 90A for Room fire rating requirement and also consider sprinkler system design as per NFPA 13.
How would do find the codes for the protection from hazards in mechanical rooms in buildings not required to be protected by automatic sprinkler system?
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