§ 191. Wainscoting. Wainscoting in any stair or public hall shall be
removed unless such wainscoting is backed against a fire-retarded wall
or the stair or hall is equipped with a sprinkler system conforming to
the provisions of section one hundred eighty-seven. Where wainscoting is
removed in order to fire-retard a public hall or stair, such wainscoting
may be replaced or additional wainscoting may be applied to make the
surfaces of any new partitions or walls conform to existing partitions
or walls provided such additional wainscoting is similarly backed with
fire-retarded materials.