§ 102. Stairs. 1. Except as otherwise specifically provided in\nsubdivisions three and four and in paragraphs b to j inclusive of\nsubdivision six, every multiple dwelling which exceeds two stories in\nheight shall have at least two fire-stairs. Such fire-stairs shall\nextend from the entrance story to the roof and be equipped with\nfireproof self-closing doors glazed with wire glass and without\ntransoms. No windows shall be required in such stairs, but any openings\nin exterior walls, except any window openings facing a street or yard,\nshall be equipped with fireproof frame and sash glazed with wire glass.\nEntrances to such fire-stairs shall be at least fifteen feet distant\nfrom each other and from the entrance to every other fire-stair or\nfire-tower, except that the distance between two such entrances may be\nless if they are on opposite sides of an elevator vestibule or other\npublic hall or are separated by an elevator shaft. The doors giving\naccess to such stairs shall not be held open by any device whatever.\n 2. Every such fire-stair shall have an entrance on the entrance story\nfrom a street or an entrance at the side or rear of the dwelling from a\nyard, court or passageway having continuous, safe and unobstructed\naccess to a street. Except as otherwise expressly provided in paragraphs\nb to j inclusive of subdivision six, in a dwelling not exceeding one\nhundred twenty-five feet in height every stair, fire-stair and\nfire-tower shall be at least three feet in clear width, and where only\none fire-stair or fire-tower is required such fire-stair or fire-tower\nshall be at least three feet eight inches in clear width. In a dwelling\nexceeding one hundred twenty-five feet in height every required\nfire-stair shall be at least three feet eight inches in clear width from\nthe entrance story up to a floor level not more than one hundred feet\nbelow the ceiling of the highest story, and above such level every\nfire-stair shall be at least three feet in clear width. Every stair\nlanding at every floor level shall be at least three feet eight inches\nin clear width in every direction.\n 3. Except in dwellings erected under plans filed with the department\nbefore April twenty-eighth, nineteen hundred thirty, and except as\notherwise provided in paragraphs b to j inclusive of subdivision six\nthere shall be horizontal access from every apartment to at least two\nfire-stairs, at least one of which shall be within seventy-five feet\nhorizontally in the line of travel from a required means of egress from\nsuch apartment.\n 4. Except as provided in paragraphs b, c and d of subdivision six, a\nfire-tower may be substituted for any required fire-stair. When a\nfire-tower is substituted for a fire-stair, such fire-tower shall comply\nwith all the applicable requirements for the fire-stair it replaces and\nshall have its means of egress directly to a street or to a yard or\ncourt having direct, unobstructed access to a street without passing\nthrough any entrance hall; except that a fire-tower may have its means\nof egress into a public vestibule if such means is not more than fifteen\nfeet from a street in the line of travel.\n 5. The stairs in a tower or dwelling containing a passenger elevator\nand meeting the conditions of paragraphs f, g or h of subdivision six\nmay conform to the provisions of such paragraph and paragraph i of such\nsubdivision in lieu of the different provisions which would otherwise be\napplicable thereto.\n 6. Under the special conditions described in paragraphs a to j\ninclusive and in the following table, which applies only to class A\ndwellings, stairs shall conform to the applicable provisions of such\nparagraphs and table.\n NOTE: TABLE FOUND IN CHAP. 234 OF THE LAWS OF 1964\n a. Except as otherwise expressly provided in this paragraph and in\nparagraphs b to j inclusive of subdivision six, if the number of living\nrooms on any story above the entrance story exceeds forty, there shall\nbe an
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