The design for all buildings and other structures shall conform to good engineering practice. The following table gives the minimum uniform live loads in pounds; a 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 buildings of fireproof construction.
(A) Theaters, assembly halls and other places of assemblage.
(1) Auditoriums, with fixed seats 70 lbs.
(2) Auditoriums or places of assemblage without fixed seats100 lbs.
(3) Lobbies, passageways and stairways 100 lbs.
(4) Dance halls 100 lbs.
(5) Theater stage 50 lbs.
(B) School buildings, libraries and museums.
(1) Class rooms and rooms for similar use 60 lbs.
(2) Corridors, lavatories and similar public parts of the building 80 lbs.
(C) Hotels, dwellings, apartment and tenement houses, club houses, hospitals and places of detention.
(1) Dwellings 0 lbs.
(2) Private rooms and apartments 40 lbs.
(3) Public corridors, offices, lobbies, dining rooms, and the like 80 lbs.
(D) Office buildings.
(1) First floor 100 lbs.
(2) Corridors and other public places above the first floor 80 lbs.
(3) Office space above the first floor 30 lbs.
(4) Grand stands 100 lbs.
(5) All stairs 100 lbs.
(E) Garages.
(1) All types of vehicles 100 lbs.
(2) Passenger cars only 80 lbs.
(F) Workshops, factories and mercantile establishments.
(1) All Not less than 100 lbs.
(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.)
(G) Roofs and sidewalks.
(1) Roofs 30 lbs.
(2) Sidewalks 250 lbs.
(Where the maximum floor load is more than 250 pounds to a square foot, the sidewalk abutting the building must be designed to carry safely such maximum load.)
(H) Other loading. Concentrated, partial and eccentric loading shall also be provided for.
(I) Reductions. Except in buildings for storage purposes the following reductions in assembled live loads are permissible in designating the columns, piers, walls, foundations, trusses and girders. Reduction of total live loads carried:
(1) Carrying one floor 0%
(2) Carrying two floors 10%
(3) Carrying three floors 20%
(4) Carrying four floors 30%
(5) Carrying five floors 40%
(6) Carrying six floors 45%
(7) Carrying seven or more floors 50%
(J) Wind pressure. Buildings and other structures shall be designed to resist a horizontal wind pressure of 20 pounds on every square foot of surface that is exposed, in addition to the dead loads and live loads specified above.
(K) Anchoring. If the overturning moment due to wind pressure exceeds 75% of the moment of stability of the structure due to dead load only, the structure shall be anchored to its foundation, which shall be of sufficient weight to insure the stability of the structure. Sufficient diagonal bracing or rigid connections between the uprights and horizontal structure members shall be provided to resist distortion.
('72 Code, § 151.025) Penalty, see § 10.99