Par. 1. - In tenement houses hereafter erected covering more than seventeen hundred and fifty square feet, but not more than thirty-five hundred square feet in superficial area, which do not exceed three stories above the cellar or basement, there shall be at least two stairways. The stairs may be made of wood, provided that the soffits are covered with metal lath and plastered with three coats of cement plaster and provided that such stairs are properly fire-stopped at top center and bottom of each note on preceding page.

flight with brick, terra cotta or gypsum block nogging. Public halls therein shall be at least three feet wide in the clear and stairs shall be at least three feet wide between the wall and the stair rail.

[1921, c. 289, sect. 8.]