675 IAC 14-4.4-17 Section R311.7.5.2; treads

Sec. 17. Change SECTION R311.7.5.2 as follows: (1) Change the first sentence as follows: The tread depth shall be not less than 9 inches (229 mm). (2) Add the following EXCEPTION to SECTION R311.7.5.2 to read as follows: When replacing a stairway in existing structural framing, which cannot accommodate the requirements of Section R311.7.5.2, the stair tread depth may be replaced utilizing dimensions that do not reduce the tread depth of the original staircase.