Per IBC: 
903.2.10 Group S-2 enclosed parking garages. An automatic sprinkler system 
shall be provided throughout buildings classified as enclosed parking garages 
in accordance with Section 406.4 as follows: [F]
    1. Where the fire area of the enclosed parking garage exceeds 12,000 square 
feet (1115 m2); or
    2. Where the enclosed parking garage is located beneath other groups.
    Exception: Enclosed parking garages located beneath Group R-3 occupancies.

Apartment Bldg per the IBC is R-2 occupancy.

Duane Johnson, PE
Program Manager
Division of the Fire Marshal (Contractor)
Office of Research Services 
National Institutes of Health 
301-496-0487

"Protecting Science - One Sprinkler at a Time"


-----Original Message-----
From: Matt Grise [mailto:[email protected]] 
Sent: Monday, March 18, 2013 2:00 PM
To: [email protected]
Subject: garage under apartments

I am looking at an apartment building where the first floor is half garage 
spaces (instead of apartments). Each garage is assigned to one apartment and 
has a locking door on it, but as you exit the garage, you enter a hallway that 
serves all of the units on the first floor.

The question: would these garages be considered "accessible by only one unit"?  
(able to be protected by 13R 6.8.3.3 as  part of a dwelling unit)

It seems like they are, since they cannot be entered by people from the other 
units. Any thoughts?

Matt Grisé PE*, LEED AP, NICET II
Sales Engineer
Alliance Fire Protection
130 w 9th Ave.
North Kansas City, MO 64116

*Licensed in KS & MO

913.888.0647 ph
913.888.0618 f
913.927.0222 cell
www. AFPsprink.com

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