Code of Massachusetts Regulations
780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS
Chapter CHAPTER 51 - MASSACHUSETTS RESIDENTIAL CODE
Appendix AF - RADON CONTROL METHODS - ADOPT AS REVISED
Section AF103.4

Current through Register 1543, March 14, 2025

Revise and replace section AF103.4.4 Sumps as follows:

AF103.4.4 Sumps. Sumps open to soil or serving as the termination point for sub-slab drain tile loops shall be covered with a gasketed or sealed lid. Sumps used as the suction point in a sub slab depressurization system shall have a lid designed to accommodate the vent pipe. Sumps used as a floor drain shall have a lid equipped with a trapped inlet. Drainage systems that lead outside the foundation walls shall be isolated or trapped so as not to short-circuit the depressurization system.

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