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9.15.3.6.(1)
OS2OP2OH1OH4OS3
ObjectiveOS2 Structural Safety
Attribution
[F20,F21-OS2.3] Applies to elements that support or are part of an environmental separator.
Application
Application 1: 
Minimum width of concrete strip footings for interior loadbearing masonry walls, for foundations for buildings to which Section 9.15. applies [see Sentence 9.15.1.1.(1) for application of Section 9.15.].
Exceptions: 
except as stated in:
  • Sentence 9.15.1.2.(1), which applies to foundations and footings for buildings erected on permafrost, and
  • Sentence 9.15.3.4.(3), which applies to foundations resting on gravel, sand or silt in which the water table level is located less than the width of the footings below the bearing surface.
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Intent
Intent 1: 
To limit the probability of insufficiently wide strip footings, which could lead to compressive failure and excessive settlement of underlying soil, which could lead to structural damage to the foundation and the building, which could lead to an inability to support vertical building loads or lateral earth loads.
This is to limit the probability of compromised structural integrity, which could lead to:
  • structural failure, or
  • where elements support or are part of an environmental separator, the displacement or failure of required environmental separation elements, which could lead to the deterioration of building elements.
This is to limit the probability of harm to persons.
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