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// CODE SNIPPET

Section R325 Mezzanines

2015 Michigan Residential Code > 3 Building Planning > R325 Mezzanines
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R325.1 General

Mezzanines shall comply with Section R325.

R325.2 Mezzanines

The clear height above and below mezzanine floor construction shall be not less than 7 feet (2134 mm).

R325.3 Area Limitation

The aggregate area of a mezzanine or mezzanines shall be not greater than one-third of the floor area of the room or space in which they are located. The enclosed portion of a room shall not be included in a determination of the floor area of the room in which the mezzanine is located.

R325.4 Means of Egress

The means of egress for mezzanines shall comply with the applicable provisions of Section R311.

R325.5 Openness

Mezzanines shall be open and unobstructed to the room in which they are located except for walls not more than 36 inches (1067 mm) in height, columns and posts.

Exceptions:
  1. Mezzanines or portions thereof are not required to be open to the room in which they are located, provided that the aggregate floor area of the enclosed space is not greater than 10 percent of the mezzanine area.
  2. In buildings that are not more than two stories above grade plane and equipped throughout with an automatic sprinkler system in accordance with Section R313, a mezzanine shall not be required to be open to the room in which the mezzanine is located.

Related Code Sections


505.2 General Building Heights and Areas, Mezzanines
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712.1.11 Fire and Smoke Protection Features, Mezzanine
Vertical openings between a mezzanine complying with Section 505 and the floor below shall be permitted ...
2015 Michigan Building Code > 7 Fire and Smoke Protection Features > 712 Vertical Openings > 712.1 General > 712.1.11 Mezzanine
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2015 Michigan Rehabilitation Code > 8 Alterations — Level 2 > 805 Means of Egress > 805.3 Number of Exits > 805.3.2 Mezzanines
A206.9 Earthquake Hazard Reduction in Existing Reinforced Concrete and Reinforced Masonry Wall Buildings With Flexible Diaphragms, Mezzanines
Existing mezzanines relying on reinforced concrete or reinforced masonry walls for vertical and/or lateral support shall be anchored to the walls ...
2015 Michigan Rehabilitation Code > A2 Earthquake Hazard Reduction in Existing Reinforced Concrete and Reinforced Masonry Wall Buildings With Flexible Diaphragms > A206 Analysis and Design > A206.9 Mezzanines
Section R325 Building Planning, Mezzanines
Mezzanines shall comply with Section R325. The ...
2015 Michigan Residential Code > 3 Building Planning > R325 Mezzanines
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