6.15: Installation in Areas of Heavy Snowfall. Piping, regulators, meters, and other equipment installed in the piping system, when exposed to the elements, must be protected from damage from accumulated snow by either following manufacturer's installation instructions when specific to such issues or, when no such instruction is provided, by otherwise reinforcing and/or sheltering any exposed equipment. However, should the performance of gas-fitting work impact the structural integrity of building or roofing components, necessary corrective work falls outside the scope of this code. See 780 CMR: The Massachusetts State Building Code or 271 CMR: The Massachusetts Sheet Metal Code, if applicable, for licensing and other requirements for said work.
248 CMR, § 8.05