Code of Massachusetts Regulations
780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS
Chapter 14 - Exterior Walls
Section 1407 - METAL COMPOSITE MATERIALS (MCM)
Subsection 1407.11 - Alternate conditions
Universal Citation: 780 CMR MA Code of Regs 1407.11
Current through Register 1531, September 27, 2024
MCM and MCM systems shall not be required to comply with Sections 1407.10.1 through 1407.10.4 provided such systems comply with Section 1407.11.1 or 1407.11.2.
1407.11.1 Installations up to 40 feet in height. MCM shall not be installed more than 40 feet (12 190 mm) in height above grade where installed in accordance with Sections 1407.11.1.1 and 1407.11.1.2.
1407.11.1.1
Fire separation distance of
5 feet or less. Where the fire separation distance is 5
feet (1524 mm) or less, the area of MCM shall not exceed 10 percent of the
exterior wall surface.
1407.11.1.2
Fire separation distance
greater than 5 feet. Where the fire separation distance
is greater than 5 feet (1524 mm), there shall be no limit on the area of
exterior wall surface coverage using MCM.
1407.11.2 Installations up to 50 feet in height. MCM shall not be installed more than 50 feet (15 240 mm) in height above grade where installed in accordance with Sections 1407.11.2.1 and 1407.11.2.2.
1407.11.2.1
Self-ignition
temperature. MCM shall have a self-ignition temperature of 650°F
(343°C) or greater when tested in accordance with ASTM D 1929.
1407.11.2.2
Limitations.
Sections of MCM shall not exceed 300 square feet (27.9
m2) in area and shall be separated by a minimum of 4
feet (1219 mm) vertically.
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