General.
Municipal Code of Chicago § 14B-21-2101
in effect14B-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)
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2667247Fetched: 10/24/2026
