Code of Massachusetts Regulations
780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS
Chapter 15 - Roof Assemblies and Rooftop Structures
Section 1509 - ROOFTOP STRUCTURES
Subsection 1509.4 - Cooling towers
Universal Citation: 780 CMR MA Code of Regs 1509.4
Current through Register 1531, September 27, 2024
Cooling towers in excess of 250 square feet (23.2 m2) in base area or in excess of 15 feet (4572 mm) high where located on building roofs more than 50 feet (15 240 mm) high shall be of noncombustible construction. Cooling towers shall not exceed one-third of the supporting roof area.
Exception: Drip boards and the enclosing construction of wood not less than 1 inch (25 mm) nominal thickness, provided the wood is covered on the exterior of the tower with noncombustible material.
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