§ 27-269 — Construction classes
New York City Administrative Code (current through L.L. 2026/147, enacted September 12, 2026, and amendments effective through October 10, 2026) · NYC Admin. Code § 27-269
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§ 27-269 Construction classes.
Table 3-3 lists construction classes that shall be established for classifying buildings and spaces by construction in accordance with the provisions of articles fifteen, sixteen and seventeen of this subchapter. TABLE 3.3 Construction Classes Construction Group Class I – Noncombustible I – A – (4-hr. protected) I – B – (3-hr. protected) I – C – (2-hr. protected) I – D – (1-hr. protected) I – E – (unprotected) II – Combustible II – A – (heavy timber) II – B – (protected wood joist) II – C – (unprotected wood joist) II – D – (protected wood frame) II – E – (unprotected wood frame)