The Ontario Building Code | Exposure to Exterior Space or the Ground and Separation of Dissimilar Environments
188.8.131.52. Exposure to exterior Space or the Ground and Separation of Dissimilar Environments
(1) This Part applies to,
(b) buildingmaterials, components and assemblies separating environmentally dissimilar interior spaces, and
(c) site materials, components, assemblies and grading that may affect environmental loads on building materials, components and assemblies exposed to exterior space or the ground.