The bill amends the Stille-DeRossett-Hale single state construction code act by adding a new section, Sec. 4j, which outlines specific conditions under which a multiple-family dwelling with no more than three levels above grade plane may utilize a single interior exit stairway. The conditions include limitations on the number of units per level (no more than four), the maximum net floor area of each level (not exceeding 4,000 square feet), and restrictions on exit access travel distance (not more than 125 feet). Additionally, the bill specifies requirements for openings to the stairway enclosure, the absence of elevator access into the enclosure, and the installation of fire safety systems, including a manual fire alarm and automatic smoke detection systems.

Further stipulations include the placement of smoke detectors in common areas, compliance with sprinkler system standards, the prohibition of electrical receptacles in the stairway, and a minimum width of 48 inches for the interior exit stairway. The section also states that these provisions do not apply if the department adopts the International Code Council's guidelines for single interior exit stairways in multiple-family dwellings with four or more levels above grade plane.

Statutes affected:
Substitute (H-2): 125.1501, 125.1531
House Introduced Bill: 125.1501, 125.1531
As Passed by the House: 125.1501, 125.1531