780 CMR, 718.1

Current through Register 1533, October 25, 2024

Subsection 718.1 - Thickness of plaster

The minimum thickness of gypsum plaster or portland cement plaster used in a fire-resistance-rated system shall be determined by the prescribed fire tests. The plaster thickness shall be measured from the face of the lath where applied to gypsum lath or metal lath.