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// CODE SNIPPET

1004.1 Design Occupant Load

Building Code 2015 of Utah > 10 Means of Egress > 1004 Occupant Load > 1004.1 Design Occupant Load
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In determining means of egress requirements, the number of occupants for whom means of egress facilities are provided shall be determined in accordance with this section.

1004.1.1 Cumulative Occupant Loads

Where the path of egress travel includes intervening rooms, areas or spaces, cumulative occupant loads shall be determined in accordance with this section.

1004.1.1.1 Intervening Spaces or Accessory Areas

Where occupants egress from one or more rooms, areas or spaces through others, the design occupant load shall be the combined occupant load of interconnected accessory or intervening spaces. Design of egress path capacity shall be based on the cumulative portion of occupant loads of all rooms, areas or spaces to that point along the path of egress travel.

1004.1.1.2 Adjacent Levels for Mezzanines

That portion of the occupant load of a mezzanine with required egress through a room, area or space on an adjacent level shall be added to the occupant load of that room, area or space.

1004.1.1.3 Adjacent Stories

Other than for the egress components designed for convergence in accordance with Section 1005.6, the occupant load from separate stories shall not be added.

1004.1.2 Areas Without Fixed Seating

The number of occupants shall be computed at the rate of one occupant per unit of area as prescribed in Table 1004.1.2. For areas without fixed seating, the occupant load shall be not less than that number determined by dividing the floor area under consideration by the occupant load factor assigned to the function of the space as set forth in Table 1004.1.2. Where an intended function is not listed in Table 1004.1.2, the building official shall establish a function based on a listed function that most nearly resembles the intended function.

Exception: Where approved by the building official, the actual number of occupants for whom each occupied space, floor or building is designed, although less than those determined by calculation, shall be permitted to be used in the determination of the design occupant load.

TABLE 1004.1.2 MAXIMUM FLOOR AREA ALLOWANCES PER OCCUPANT

FUNCTION OF SPACE OCCUPANT LOAD FACTORa
Accessory storage areas, mechanical
equipment room
300 gross
Agricultural building 300 gross
Aircraft hangars 500 gross
Airport terminal
Baggage claim 20 gross
Baggage handling 300 gross
Concourse 100 gross
Waiting areas 15 gross
Assembly
Gaming floors (keno, slots, etc.) 11 gross
Exhibit gallery and museum 30 net
Assembly with fixed seats See Section 1004.4
Assembly without fixed seats
Concentrated
(chairs only‒not fixed)
7 net
Standing space 5 net
Unconcentrated (tables and chairs) 15 net
Bowling centers, allow 5 persons for
each lane including 15 feet of runway,
and for additional areas
7 net
Business areas 100 gross
Courtrooms‒other than fixed seating
areas
40 net
Day care 35 net
Dormitories 50 gross
Educational
Classroom area 20 net
Shops and other vocational room
areas
50 net
Exercise rooms 50 gross
Group H-5 Fabrication and manufac-
turing areas
200 gross
Industrial areas 100 gross
Institutional areas
Inpatient treatment areas 240 gross
Outpatient areas 100 gross
Sleeping areas 120 gross
Kitchens, commercial 200 gross
Library
Reading rooms 50 net
Stack area 100 gross
Locker rooms 50 gross
Mall buildings‒covered and open See Section 402.8.2
Mercantile 60 gross
Storage, stock, shipping areas 300 gross
Parking garages 200 gross
Residential 200 gross
Skating rinks, swimming pools
Rink and pool 50 gross
Decks 15 gross
Stages and platforms 15 net
Warehouses 500 gross

For SI: 1 square foot = 0.0929 m2, 1 foot = 304.8 mm.
a. Floor area in square feet per occupant.
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