§ 15.08.120. Concrete walls—Requirements—Specifications.

A.

Monolithic concrete walls having less than two-tenths of one percent of reinforcing steel shall be considered as plain concrete walls and the thickness of single bearing walls of plain concrete shall be in accordance with the recommendations in the report of the Building Code Committee of the United States Department of Commerce as last published under the title of "Recommended Minimum Requirements for Masonry Wall Construction."

B.

Subject to the other requirements of this chapter, reinforced concrete bearing walls shall have a thickness of not less than six inches for the top story with the thickness of succeeding lower stories, including the basement, increasing at the rate of one inch for each two stories.

C.

In such walls the amount of reinforcement shall be at least two-tenths of one percent in each direction, horizontal and vertical, the steel being equally distributed on each face of the wall within a minimum bar spacing of twenty-four inches.

D.

The combined thickness of the separate parts of double or triple monolithic walls shall be not less than that required for single walls, and no single section of a double or triple wall shall be less than four inches thick. The sections shall be tied together with three-eighths-inch round or square galvanized or tarcoated rods, with two-inch hooks at each end, the rods to be spaced not more than eighteen inches horizontally and vertically.

E.

Exterior panel walls supported at each story of skeleton construction buildings shall be not less than five inches thick of reinforced concrete.

(Prior code § 15-4L).