The exception to section R313.1 shall be modified as follows:
Exception. Automatic residential fire sprinkler systems shall not be required in townhouses where either two (2) 1-hour fire-resistance rated walls or a common two-hour fire-resistance rated wall, as specified in item number 2 of section R302.2.2, is installed between dwelling units or when additions or alterations are made to existing townhouses that do not have an automatic residential fire sprinkler system installed.
(Ord. 44-17, 12-19-2017, eff. 1-1-2018; amd. Ord. 40-20, 12-1-2020, eff. 1-1-2021)