Houses

Par. 1. - Excepting water-closet compartments and bathrooms, wherever a room in any tenement house has a window or windows of less than nine square feet of glazed surface opening on a street, a railroad right of way, cemetery, public park, alley or open passageway not less than ten feet in width, such window or windows shall be enlarged and provided with the above mentioned glazed surface, and wherever such room does not open as above provided or opens upon an alley or open passageway less than ten feet in width or upon a shaft or upon a court less than six feet in its least dimension, then such room shall be provided with a sash window communicating with another room in the same apartment, having windows of at least the superficial area prescribed for the windows of rooms in tenement houses hereafter erected and opening on a street, a railroad right of way, cemetery, public park or alley or open passageway at least ten feet in width, or on a court or courts at least equivalent to the courts required in sections fifty-eight and fifty-nine; and such new sash window shall contain not less than fifteen square feet of glazed surface and shall be made so as to open readily. One wall of every alcove in an existing tenement house shall be provided with an opening equal in area to eighty per cent of the wall. No tenement house shall be so altered as to reduce the provisions for the light and ventilation of any room or alcove or public hall or stair hall below the requirements of this act.