Code of Massachusetts Regulations
780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS
Chapter 26 - Plastic
Section 2610 - LIGHT-TRANSMITTING PLASTIC SKYLIGHT GLAZING
Subsection 2610.3 - Slope
Universal Citation: 780 CMR MA Code of Regs 2610.3
Current through Register 1531, September 27, 2024
Flat or corrugated light-transmitting plastic skylights shall slope at least four units vertical in 12 units horizontal (4:12). Dome-shaped skylights shall rise above the mounting flange a minimum distance equal to 10 percent of the maximum span of the dome but not less than 3 inches (76 mm).
Exception: Skylights that pass the Class B Burning Brand Test specified in ASTM E 108 or UL 790.
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