Mezzanine stairs - rated? | The Building Code Forum A mezzanine shall be open and unobstructed to the room in which such mezzanine is located except for walls not more than 42 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 the mezzanines are located, provided that the occupant load of the aggregate area
Mezzanine Size Calculation | The Building Code Forum Think of a mezzanine as being like a piece of furniture or equipment You start with a room That room has dimensions, from which you can calculate its area Now you plug in a mezzanine That mezzanine can be up to 1 3 (or 1 2 if you meet all the conditions for the exception) of the area of the room before you thought about a mezzanine
Reason for 2015 IBC 505. 2. 1 Mezzanine Area rule? So: by 505 1, all mezzanines must be "in compliance with Section 505 2" Section 505 2 1 seems to imply that in order to have a 1000sqft mezzanine, you need to build at least a 3000sqft building, and probably much larger if any part of the ground floor (e g the area under the mezzanine) is enclosed
Mezzanine - Accessible Means of Egress vs. Accessible Route Under design is a 2,833sf mezzanine which will contain a 996sf enclosed office area along with a 1,837sf storage area No public access on the mezzanine, just employees of the business and supply storage Mezzanine will be served by a single, unenclosed stairway
Mezzanine egress - The Building Code Forum The occupant load only warrants one exit However, because the mezzanine is enclosed and not open, a second exit is required The common path of travel from the most remote point in the breakroom (mezzanine) to the bottom of the stairs is 69 feet, 4 inches At that point, there are two exits available for exiting from the building
NFPA mezzanine definition - The Building Code Forum The proposed design (which I haven't seen) features an open second storey that under Canadian codes cannot be considered a mezzanine [In National Building Code of Canada - NBCC - , mezzanines are storeys if the area of the mezzanine exceeds 40% of the open area of the floor below AND do not contain enclosures that exceed 10% of the floor area ]
Mezzanine vs. 2nd floor - The Building Code Forum A mezzanine shall be open and unobstructed to the room in which such mezzanine is located except for walls not more than 42 inches (1067 mm) in height, columns and posts Exceptions: 2 A mezzanine having two or more exits or access to exits is not required to be open to the room in which the mezzanine is located 5
Mezzanine - The Building Code Forum A mezzanine having two or more exits or access to exits is not required to be open to the room in which the mezzanine is located 3 Mezzanines or portions thereof are not required to be open to the room in which the mezzanines are located, provided that the aggregate floor area of the enclosed space is not greater than 10 percent of the
Mezzanine question - The Building Code Forum I see no issue with classifying the story as a mezzanine, so long as it complies with IBC Section 505 Given the description of what's provided, I would carefully review 505 2 1 (Area Limitation) Additionally, 505 2 3 (Openness) is worth a review; although, it seems Exception #1 or #2 would likely be the proposed
Is a Mezzanine considered a floor? - The Building Code Forum A mezzanine or mezzanines in compliance with Section 505 2 shall be considered a portion of the story below Such mezzanines shall not contribute to either the building area or number of stories as regulated by Section 503 1 The area of the mezzanine shall be included in determining the fire area