OH1 Indoor Conditions



Intent 1:

To limit the probability that a direct connection between storm and sanitary drainage systems will lead to the entry of sewer gases into occupied space, which could lead to negative effects on indoor air quality, which could lead to harm to persons.

Intent 2:

To exempt the upper end of leaders that terminate:

  • at roofs that are used only for weather protection,
  • not less than 1 m above or not less than 3.5 m in any other direction from air inlets, openable windows or doors, and
  • not less than 1.8 m from property lines.

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