Code of Massachusetts Regulations
780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS
Chapter 14 - Exterior Walls
Section 1407 - METAL COMPOSITE MATERIALS (MCM)
Subsection 1407.9 - Surface-burning characteristics
Universal Citation: 780 CMR MA Code of Regs 1407.9
Current through Register 1531, September 27, 2024
Unless otherwise specified, MCM shall have a flame spread index of 75 or less and a smoke-developed index of 450 or less when tested in the maximum thickness intended for use in accordance with ASTM E 84 or UL 723.
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