General. Footings shall be constructed of solid masonry or concrete with or without reinforcement and shall be so designed that stresses in the material used shall not exceed the maximum allowable stresses required in the following chapters of this Code.
Reinforced concrete footings, Chapter13-136;
Plain concrete footings, Chapters13-136 and 13-140;
Masonry footings, Chapter13-140.
Masonry Footings. Footings constructed of solid masonry units shall have a depth at least twice the total projection beyond the wall or column base. When brick work in foundation walls is stepped to form a footing, the maximum offset for each course shall be one and one-half inches.
Steel Grillage Footings. When structural steel members are used in footing construction, such members shall be entirely encased by at least three inches of concrete, and the space between the members shall be entirely filled with cement grout. Stresses in steel members shall not exceed the allowable stresses required in Chapter13-148.
(Prior code § 70-3.3)