TB 054 - Hazardous/Illegal Mezzanines Flashcards
FIREFIGHTING CONCERNS
Has the mezzanine been legally constructed with a permit from the Department of
Building and safety
FIREFIGHTING CONCERNS
A fully sprinklered building must have sprinklers installed Where?
Above and beneath any mezzanine
FIREFIGHTING CONCERNS
What may lead to premature mezzanine collapse under fire conditions?
Overloaded storage conditions
intermediate floor placed in any story or room.
Mezzanine
When the total area of any such mezzanine floor exceeds ____percent of the total floor area in that room, it shall be considered as constituting an additional “story” in the building.
33 1/3 percent
The clear height above or below a mezzanine floor construction shall be not less than
7 feet
fire-resistive time period need not exceed ___ ____ for unenclosed mezzanines
One hour
How many levels of mezzanines can be in a room
Not more than two
Is there a limit to the number of mezzanines within a room
No limitation
The aggregate area of mezzanines within a room shall not exceed ___ ___ the area of the room in which they are located.
One- third
All portions of a mezzanine shall be ____ to the room in which it is located.
Open
The side of the mezzanine which is open to the room shall be unobstructed except for columns, posts and protective walls, or railings not more than __ inches in height.
42 inches
EXCEPTIONS:
a) Partitioning may be installed, provided the aggregate floor area of the enclosed space does not exceed ___ percent of the area of the mezzanine or have an occupant load exceeding ____, whichever is greater.
10 percent
Or exceeding 10
exceptions:
Mezzanines having ___ or more exits need not open into the story in which they are located, provided at least one of the exits gives direct access to a protected exit ______, an exit _____, enclosed exit _______, exterior exit, exterior exit ______, or exit passageway.
Two or more
Exit corridor
Exit court
Exit stairway
Exit balcony
exceptions:
In industrial facilities, mezzanines used for control equipment may be ______ on all sides
Glazed
Exceptions
___ ____ shall be provided from mezzanines having an occupant load of more than ten or when the area of the mezzanine exceeds _______ square feet, whichever is the more restrictive.
Two exits
2,000sqft
EXCEPTION
The occupant load of the mezzanine shall be added to the occupant load of the _____ or _____ in which it is located.
Story or room
If a violation of a code or ordinance enforced by an agency other than the Fire Department constitutes a fire hazard, a notice shall be issued citing 57.20.16 of the _____ _____ for the abatement of the hazard.
Fire code
For sprinklered buildings without sprinklers extending beneath the mezzanine, a notice shall be issued directing the removal of all ______ _______ beneath the mezzanine and notification shall be made to the _________________
Combustible materials
Fire prevention bureau
For mezzanines which do not appear to be adequate to support the weight of storage, a Fire/Life Safety Violation Notice requiring “_______” compliance shall be issued for removal of storage to a weight which is a safe structural load; and notification shall be made to the Fire Prevention Bureau.
Forthwith
Any questions concerning mezzanines may be telephoned to the ______ _______ and _________ Section Unit of the Fire Prevention Bureau.
North industrial and commercial section
