403.2.3 Structural integrity of interior exit stairways and elevator hoistway enclosures.
BC § 403.2.3
For all high-rise buildings, exit enclosures for interior exit stairways and elevator hoistway enclosures shall comply with Sections 403.2.3.1 through 403.2.3.4. Exception: Where fire-resistance rating is not required by this code for the enclosure or portions thereof.













