{"data":{"id":"us-nyc/n.y.c.-admin.-code-ebc-d504","jurisdiction":"us-nyc","citation":"N.Y.C. Admin. Code § EBC D504","heading":"D504 Fireproof stair enclosures (MDL 148(3)).","body":"Every stair, fire-stair, and fire-tower shall be completely separated from every other stair, fire-stair, and fire-tower and from every public hall and shaft by fireproof walls, with fireproof doors and assemblies, with the doors self-closing and without transoms, at all openings. The doors giving access to such stairs shall not be held open by any device whatsoever.\n\nExceptions:\n\n1. In dwellings 2 stories or less in height such walls shall be permitted to be constructed as 1-hour fire barriers in lieu of being fireproof.\n\n2. In lieu of fireproof walls, such noncombustible walls shall be permitted to have a 2-hour fire-resistive rating where a full system of automatic sprinklers is installed throughout the building with a water-flow alarm connected to a central supervising station, and hard-wired smoke and carbon monoxide alarms or detectors are installed throughout the building as required for new construction in accordance with \n\t\t\t\t\t\t\t\t\t\t\t\tChapter 9\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t of the \n\t\t\t\t\t\t\t\t\t\t\t\tNew York City Building Code\n\t\t\t\t\t\t\t\t\t\t\t\t.","path":["New York City Administrative Code","Title 28","Chapter 12: The New York City Existing Building Code (effective July 17, 2027)"],"source_url":"https://files.amlegal.com/pdffiles/NewYorkCity/Admin/XML.zip","current_through":"Local Law 2026/135 (enacted August 31, 2026)","vintage":"","retrieved_at":"2026-09-06T02:48:57Z","sha256":"a0722832f721059236efed4f1b6dd33d58aad3c5a82cba220ca0f482ad6a4e29","source_id":"us-nyc","stale":false,"prev":"us-nyc/n.y.c.-admin.-code-ebc-d503","next":"us-nyc/n.y.c.-admin.-code-ebc-d505"},"notice":"GroundRules: Original legal text. Not legal advice."}