14B-21-2101 General.
The provisions of Section 2101 of IBC are adopted by reference with the following modification:
1.   Add new Section 2101.2.2 to read:
"2101.2.2 Single-wythe exterior walls.
Masonry units used in single-wythe exterior walls of buildings containing a Group R occupancy shall be tested in accordance with ASTM E514 and shall have integral water repellant included in the manufacturing process.
Exception: Grade SW clay or shale masonry units.
Mortar used in single-wythe exterior walls of buildings containing a Group R occupancy shall have a compatible water repellant added to the mixture."
(Amend Coun. J. 10-7-20, p. 21791, Art. II, § 30)