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13-52-090  Live loads.
   Live loads are those produced by the use and occupancy of the building or other structure and do not include environmental loads such as wind load, snow load, rain load, or dead load.
   (a)   Required Live Loads. The live loads assumed in the design of buildings and other structures shall be the maximum loads likely to be produced by the intended use or occupancy but shall in no case be less than the minimum uniformly distributed unit loads required by Table 13-52-090 set out in this section, reduced as appropriate in accordance with Section 13-52-210, or the concentrated loads required by Table 13-52-130 as set out in Section 13-52-130.
Table 13-52-090
Minimum Uniformly Distributed Floor Live Loads
Occupancy
Minimum Live Loads (pounds per square foot)
Table 13-52-090
Minimum Uniformly Distributed Floor Live Loads
Occupancy
Minimum Live Loads (pounds per square foot)
A.
Residential Units.
(a)
Dwelling units or sleeping rooms
40
(b)
Public rooms
100
(c)
Public kitchens
75
(d)
Corridors
(1)
Serving dwelling units and sleeping rooms only
40
(2)
Serving public rooms
100
(e)
Public stairways
100
(f)
Balconies (exterior)
100
(g)
Porches
100
(h)
Decks
100
B.
Institutional Units.
(a)
Operating rooms, laboratories
60
(b)
Private rooms and wards
40
(c)
Kitchens
100
(d)
Public spaces
100
(e)
Corridors
(1)
First floor
100
(2)
Above first floor
80
C-1.
Large Assembly Units And C-2 – Small Assembly Units.
(a)
Auditoriums, theaters and assembly halls
(1)
Fixed seats
60
(2)
Movable seats
100
(3)
Projection room
100
(4)
Stage floor
150
(5)
Dressing rooms
40
(6)
Gridiron floor grating
60
(b)
Armories and drill rooms
150
(c)
Courtrooms
75
(d)
Dancehalls, gymnasiums and dining rooms
100
(e)
Libraries
(1)
Reading rooms
60
(2)
Stack rooms
Note 1 but not less than
150
(f)
Kitchens
100
(g)
Aisles, corridors, lobbies, stairways and other public space   
100
C-3.
Schools.
(a)
Classrooms
40
(b)
Laboratories
75
(c)
Shops
100
(d)
Corridors
(1)
First floor
100
(2)
Above first floor
80
(e)
Stairways
100
D.
Open-Air Assembly Units.
All structures
100
Grandstands, stadiums and arena bleachers
Note 2 but not less than
100
E.
Business Units.
(a)
Offices – Note 3 but not less than
50
(b)
Lobbies
100
(c)
Laboratories
100
(d)
Public rooms
100
(e)
Corridors
(1)
First floor
100
(2)
Above first floor same as occupancy served
F.
Mercantile Units.
Retail
100
Wholesale
125
G.
Industrial Units.
Light manufacturing
125
Heavy manufacturing
250
H.
Storage Units.
(a)
Garages and parking facilities for passenger cars only
(1)
Parking floor
50
(2)
Roofs when used for parking (includes snow loads)
75
(3)
Roofs and all other principal load- carrying elements when used in combination as a deck
100
(b)
Light storage
125
(c)
Heavy storage
250
I.
Hazardous Use Units.
Light manufacturing
125
Heavy manufacturing
125
J.
Miscellaneous.
(a)
Private garages: roofs and all other principal load-carrying elements when used in combination as a deck
100
General All Occupancies.
(a)
Corridors
(1)
First floor
100
Other floors same as occupancy served except as indicated.
(b)
Balconies (exterior)
100
(c)
Decks (patio and roof)
100
(d)
Fire escapes
100
(e)
Marquees and canopies
75
(f)
Sidewalks, vehicular driveways, and yards, subject to trucking Note 4
250
(g)
Stairs and exit ways except as indicated
100
(h)
Walkways and elevated platforms other than exit ways
60
(i)
Yards and terraces (pedestrian)
100
Notes For Table 13-52-090.
Note 1 – The weight of books and shelving shall be computed using an assumed density of 65 lb/ft3 (pounds per cubic foot, sometimes abbreviated pcf) and converted to a uniformly distributed load; this load shall be used if it exceeds 150 lb/ft2.
Note 2 – For detailed recommendations, see American National Standard for Assembly Seating, Tents, and Air-Supported Structures, A.N.S.I. / N.F.P.A. 102-1978.
Note 3 – File and computer rooms shall be designed for heavier loads based on anticipated occupancy.
Note 4 – American Association of State Highways and Transportation Officials. A.A.S.H.T.O. axle loads should also be considered where appropriate. Refer to Section 13-52-180, special loading.
 
(Prior code § 68-2.2; Added Coun. J. 11-29-89, p. 8387; Amend Coun. J. 10-1-03, p. 9163, § 4.2)