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9.35.3.2.(1)
OS2OH1OP2OH4OS3
ObjectiveOS2 Structural Safety
Attribution
Application
Application 1: 
Depth of foundations for carports or garages connected to a dwelling unit directly or by a breezeway and serving not more than one dwelling unit, where such foundations are built in clay-type soils subject to significant movement with a change in soil moisture content, for buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].
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Intent
Intent 1: 
To limit the probability of differential vertical movement of soil beneath and between the foundations of dwelling units and the foundations of structurally-attached garages or carports, which could lead to damage to foundations.
This is to limit the probability of an inability to support vertical building loads or lateral earth loads, which could lead to:
  • structural failure, or
  • compromised structural integrity of elements supported by foundations, which could lead to the failure of 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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