1403.8.1 Exterior wall envelope.
BC § 1403.8.1
The exterior wall envelope, and any associated openings, shall be constructed with bird friendly materials up to 75 feet (22 860 mm) above grade. Materials other than bird friendly materials shall not exceed an aggregate of 10 square feet (0.93 m 2 ) within any 10 feet (3048 mm) by 10 feet (3048 mm) square area of exterior wall below 75 feet (22 860 mm) above grade. Exceptions: 1. Where ground floor transparency is required by the New York City Zoning Resolution, transparent bird friendly material with a UV-reflective pattern and a maximum threat factor of 27 shall be provided.
2.In areas of special flood hazard and shaded X-Zones where flood resistant glazing is proposed and ground floor transparency is required by the New York City Zoning Resolution, transparent bird friendly material with a UV-reflective pattern and a maximum threat factor of 36 shall be provided. (L.L. 2020/015, 1/10/2020, eff. 1/10/2021) Editor's note: For related unconsolidated provisions, see Appendix A at L.L. 2020/015.
