Rhode Island Fire Laws and Rules Annotated, 1999-2000 Edition
23-28.35-2. Location of detectors.
Statute text
(b) In basements or cellars, smoke detectors shall be
located within twenty-four inches (24") of the base of stairways with solid
risers and treads and side enclosed from the top of the stairway to the basement
floor in addition to any other detector requirements for that level.