§ 150.005 FLOOR AND ROOF LOADS AND WIND PRESSURE.

   The design for all buildings and other structures shall conform to good engineering practice.

   (A)   Loads.

      (1)   The following table gives the minimum uniform live loads in pounds per square foot which shall be used in the design of buildings, except that the specified live loads (but not the roof or sidewalk loads) may be reduced by 20% in building of fireproof construction.

Building	Minimum Uniform Live Loads in Pounds per Square Foot
Theaters, assembly halls, and other places of assemblage; auditoriums with fixed seats	70
Lobbies, passageways, stairways and auditoriums or places of assemblages without fixed seats	100
Dance halls	100
Theater stage	150
School buildings, libraries and museums; classrooms and rooms for similar use	60
Corridors, laboratories and similar public parts of the building	80
Hotels, dwellings, apartments and tenement houses, club houses, hospitals, and places of detention:
Dwellings	40
Private rooms and apartments	40
Public corridors, offices, lobbies, dining rooms and the like	80
Office buildings:
First floor	100
Corridors and other public spaces above first floor	80
Office space above first floor	50
Grandstands	100
All stairs	100
Garages:
All types of vehicles	100
Passenger cars only	80
Workshops, factories and mercantile establishments: not less than	100
(In warehouses, workshops, factories and mercantile establishments for the sale, storage or manufacture of heavy merchandise or machinery the floors shall be designed to carry all loads safely, including the allowance of at least 25% for vibration where vibration occurs.)
Roofs	30
Sidewalks	250
(If any building where the maximum floor load is more than 250 pounds per square foot, the sidewalk must be designed to safely carry such maximum load.)

 

      (2)   Concentrated, partial and eccentric loading shall also be provided for.

      (3)   Except in buildings for storage purposes the following reduction in assumed total live floor loads are permissible in designing the columns, piers, walls, foundations, trusses and girders.

Reduction of total live loads carried:
Carrying one floor	0%
Carrying two floors	10%
Carrying three floors	20%
Carrying four floors	30%
Carrying five floors	40%
Carrying six floors	45%
Carrying seven or more floors	50%

 

   (B)   Unit pressure. Buildings and other structures shall be designed to resist a horizontal wind pressure of 20 pounds on every square foot of exposed surface, in addition to the dead loads and the live loads specified above. If the overturning movement due to wind pressure exceeds 75% of the movement of stability of the structure due to the dead load only, the structure shall be anchored to its foundations, which shall be of sufficient weight to ensure the stability of the structure. Sufficient diagonal bracing or rigid connections between the uprights and horizontal structural members shall be provided to resist distortion.

(Prior Code, § 7-2-5) Penalty, see § 10.99