Par. 1. - In all tenement houses of the second or third class hereafter erected all stud partitions which rest directly over each other shall run through the wooden floor beams and rest upon the cap of the partition below, and shall have the studding filled in solid between the uprights to the depth of the floor beams with suitable materials. All such buildings having a superficial area of over thirty-five hundred square feet and all buildings more than seventeen hundred and fifty square feet in superficial area and more than four stories or fifty-five feet in height, shall have all stud partitions between suites fireproofed by filling in full height between studs with brick, terra cotta or gypsum blocks or other filling material approved by the commissioner and covering both sides of the separating partitions with metal laths and three coats of cement plaster.

[1921, c. 289, sect. 11.]

Section 51. Wooden Tenement Houses

Par. 1. - Outside of the building limits, tenement houses not exceeding three stories in height above the basement, nor eighteen hundred square feet in area, may be erected of wood. No wooden tenement house shall be increased in height so as to exceed three stories above the basement or cellar.