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  1. Venting of new construction

    Plumbing
    1) The plumbing codes state that when it is necessary to increase the size of a vent extension through the roof that the change in diameter must be made at least 12 inches inside the building below the roof. What is the purpose of this rule? Why can't the change be made at 3" inside the...
  2. Ventilated or Unventilated Crawlspace?

    Building & Construction
    I am trying to make sense of the MA building code (which defers to the IRC as far as I can tell) regarding ventilated and unventilated crawlspaces. I am chasing the idea of fixing up my crawlspace in such a way that it both 1) makes sense and 2) satisfies code. Here is what I am reading...
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