BOMA

STANDARD
INDUSTRIAL BUILDINGS,
METHODS OF MEA5UREMENT
DEFINITIONS
2. Permanent Mezzanines are not built with the intention
of being removed and share building systems (HVAC,
lighting, poweç etc,), ln a multi-story building containing
elevators, the existence of an elevator stop at a
mezzanine indicates that it is permanent. Such
mezzanines are always measured as part of
exterior gross area or drip line area of the floor
immediately below.
3. Unclassified Mezzanines cannot be classified as
either temporary or permanent, are included in
exterior gross area or drip line area, but are always
disclosed when presenting area measurements.
Discussion: Depending upon its location, a mezzanine
may be stand-alone mezzanines or attached mezzanines.
ln addition, they may also be a finished mezzanine or a
storage mezzanine. Refer to lllustration 3 for typical
mezzan i n e m easLt re me nt b ou n d ari es.
Occupant - one who has certain legal rights to, or legal
control over, the premises occupied.
Discussion: An occupant may be a tenant ín a building
the owner/user (or an operating unit thereof) of a building,
Within this standard, the terms "tenant' and ooccupanto
are deemed to have the same meaning although they may
have differing legal rights.
Occupant Area* - a portion of a building where an occupant
normally houses personnel, equipment, fixtures, furniture,
supplies, goods or merchandise.
Discussion. ln the predecessor standard, occupant area
was termed "tenant area', An occupant generally has
primary control over its occupant area and determlnes use
within pre-established guidelines and/or rules. However,
the existence of primary control over an area does not
make it occupant area, with the most common example
being restrooms on single occupant floors. There is no
deduction for columns and projections necessary to the
building. Occupant area excludes service areas such as
toilets, electrical closets, mechanical rooms and the like.
It also excludes amenity areas as defined above. Door
set-backs at entrances to occupant area are included in its
area. Individual adjacent occupant areas on floors having
multiple occupants are measured to the centerline of walls
that separate them.
Where an occupant area is located adjacent to the exterior
enclosure of a building that is measured using Method B,
the Drip Line Method, the area of such occupant area shall
include the adjacent area between the measure line and
the drip line of the building.
Occupant Void" - a floor opening between two or more
adjacent floors created by removal of floor area by or for the
occupant that would otherwise be included in the occupant
area of the floor level,
Discussion; Occupant vaids are included ín occupant area
and typically include occupant improvement features such
as private stairways, dumbwaiters, exhaust shafts, and
spaces having ceiling heights greater than allowed by the
flppt-to-flppt heights of adjacent bullding floors. They are
different from voids in that occupant voids are included in
both interior gross area and occupant area of a floor level,
whereas voids are not. Occupant voids do not include
base building features such as the upper portion of a
monumental stair, even if the entire building has only
a single occupant. lt is common for leases to require
replacement by an occupant at the termination of a
Iease of floor area removed to create an occupant void.
However, this lease provision is not mandatory for a
flpp¡ opening to be considered an occupant void.
Overhang - An upper floor or roof of a building that extends,
protrudes, or is cantilevered above an unenclosed area below.
Discussion: Overhangs above a given floor are not considered
in locating the measure line for that flppt but they
may determine its drip line.
Property Line - The legal boundary of aparcel of land.
Discussion: Some buildings are legally divided into portions
(or parcels) that are owned rather than \eased by multiple
occupants. A property line within a building that separates
two parcels that are owned by unrelated entities generally
constitutes measure line (Method A) or a drip line
(Method B).
Where a single wall spans a property line between two
adjacent buildings (a party wall), the party wall agreement
determines whether the wall centerline or the property line
takes precedence as the measure line (Method A) or
drip line (Method B) between the two adjacent buildings,
If there is no party wall agreement, or if the party wall
agreement is silent in this respect, then the property line
is deemed to constitute the measure line (Method A) or
drip line (Method B) for each of the two adjacent buitdings.
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