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Floors, porches, decks, balconies and other similar surfaces shall be designed to support safely the uniformly distributed live loads prescribed in Section 13-52-090 or the concentrated load, in pounds-force, given in Table 13-52-130 as set out in this section, whichever produces the greater stresses. Unless otherwise specified, the indicated concentration shall be assumed to be uniformly distributed over an area two and one-half feet square (6.25 square feet) and shall be located so as to produce the maximum stress conditions in the structural members.
Location Load (lbf)
Elevator machine room grating (on area of 4 in2) 300
Finish light floor plate construction (on area of an in2) 200
Garages *
Office floors 2,000
Porch, deck and balcony (on an area of 4 in.2 applied so as to
produce the greatest stress) 300
produce the greatest stress) 300
Scuttles, skylight ribs, and accessible ceilings 200
Sidewalks 8,000
Stair treads (on area of 4 in2 at center of tread) 300
* Floors in garages or portions of buildings used for the storage of motor vehicles shall be designed for the uniformly distributed live loads of Table 13-52-090 set out in Section 13-52-090 or the following concentrated loads: (1) for passenger cars accommodating not more than nine passengers, 2,000 pounds-force acting on an area of 20 square inches; (2) mechanical parking structures without slab or deck, passenger cars only, 1,500 lbf per wheel; (3) for trucks or buses, maximum axle load on an area of 20 square inches per wheel.
(Prior code § 68-2.6; Added Coun. J. 11-29-89, p. 8387; Amend Coun. J. 10-1-03, p. 9163, § 4.4)