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§27-2061 Lighting and Ventilation of Living Rooms in Old Law Tenements
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a. Required windows. Every living room in an old law tenement shall either have a window opening:
(1) On a street; or
(2) On a yard at least four feet in depth; or
(3) On a court or shaft at least twenty square feet in area open to the sky without a roof or skylight; or
(4) Above the roof of an adjoining building; or it shall meet the requirements of the multiple dwelling law. In the event that a window opens above the roof of an adjoining building and the light and air from the adjoining lot is thereafter diminished in any way, the department may determine that such a room is a noncomplying room and require compliance with the requirements of the multiple dwelling law. For a room located on the top story, a ventilating skylight opening to the outer air may be substituted for a window. At least one-half of every required window shall open.
b. Dining space. A dining space shall have at least one window which:
(1) Opens on a street, yard or legal court, and
(2) Has an area not less than one-eighth the floor area of such dining space.
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NYC Plumbing Code 2014 > 3 General Regulations > 310 Washroom and Toilet Room Requirements > 310.1 Light and Ventilation