(A) Masonry is that form of construction in which non-combustible masonry units such as stone, brick, concrete block, or tile, hollow clay tile, gypsum block, or other similar building units or materials or a combination of these materials, are laid up unit by unit and set in mortar. The minimum permissible thickness of walls and partitions of masonry, and the quality of those materials shall conform to the American Standard Testing Materials Requirements for Masonry, Bulletin No. 3-145, 1940 edition, and Bulletins C-90 and C-129 of 1952 edition, published by the National Bureau of Standards of the United States Department of Commerce.
(B) Masonry bearing walls, party walls, fire walls, fire division walls, exterior panel walls, inclosure walls or curtain walls, eight inches or less in thickness must be laid in portland cement or cement-lime mortar as defined in this chapter.
('72 Code, § 151.030) Penalty, see § 10.99