Code of Massachusetts Regulations
780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS
Chapter CHAPTER 51 - MASSACHUSETTS RESIDENTIAL CODE
Chapter 3 - BUILDING PLANNING
Section R301
Subsection 301.1
Subsection 311.2
Current through Register 1543, March 14, 2025
Revise and replace section R311.2: Egress Doors as follows:
R311.2 : Egress Doors: A primary and secondary egress door shall be provided for each dwelling unit and shall be as remote as possible from each other. The primary egress door shall be side-hinged and shall provide a clear width of not less than 32 inches (813 mm) where measured between the face of the door and the stop, with the door open 90 degrees (1.57 rad). The secondary egress door shall be side-hinged or sliding, and for side-hinged secondary egress doors shall provide a clear width of not less than 28 inches (711 mm) where measured between the face of the door and the stop with the door open 90 degrees (1.57 rad). Sliding secondary egress door clear width may be slightly less than 28 inches (711 mm) to conform to industry fabrication standards. The clear height of secondary egress door openings shall not be less than 78 inches (1,981 mm) in height measured from the top of the threshold to the bottom of the stop. Other exterior doors shall not be required to comply with these minimum dimensions. Egress doors shall be capable of being readily opened from the inside of the dwelling without the use of a key or special knowledge or effort.
Add section R311.2.1 as follows:
Exceptions:
Revise and replace section R311.3.1 Floor elevations at the required egress doors - Exception as follows:
Exception: The landing or floor on the exterior side shall be not more than 8 1/4 inches (210 mm) below the top of the threshold provided that the door does not swing over the landing or floor.
