N.Y.C. Admin. Code § BC 417: Section BC 417: Drying Rooms

417.1 General.

A drying room or dry kiln installed within a building shall be constructed entirely of approved noncombustible materials or assemblies of such materials regulated by the approved rules or as required in the general and specific sections of this chapter for special occupancies, where applicable to the general requirements of Chapter 28 of this code, and in accordance with the New York City Fire Code.

417.2 Piping clearance.

Overhead heating pipes shall have a clearance of not less than 2 inches (51 mm) from combustible contents in the dryer.

417.3 Insulation.

Where the operating temperature of the dryer is 175°F (79°C) or more, metal enclosures shall be insulated from adjacent combustible materials by not less than 12 inches (305 mm) of airspace, or the metal walls shall be lined with 1/4-inch (6.4 mm) insulating mill board or other approved equivalent insulation.

417.4 Fire Protection.

Drying rooms designed for high-hazard materials and processes, including special occupancies as provided for in this chapter, shall be protected by an approved automatic fire-extinguishing system complying with the provisions of Chapter 9.