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9.15.4.5.(1)
OS2OP2OH1OH4OS3
ObjectiveOS2 Structural Safety
Attribution
Application
Application 1: 
Size, spacing and placement of horizontal reinforcement in flat insulating concrete form foundation walls not subject to surcharge, for buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9], that are:
  • erected on stable soils with an allowable bearing pressure of 100 kPa or greater, and
  • for buildings of light-frame construction [see Article 9.4.2.1.] or flat insulating concrete form construction that are not more than 2 storeys in building height, with a maximum floor-to-floor height of 3 m, and contain only a single dwelling unit.
Exceptions: 
except as stated in Sentence 9.15.1.2.(1), which applies to foundations and footings for buildings erected on permafrost.
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Intent
Intent 1: 
To limit the probability of insufficient horizontal reinforcement or that the horizontal reinforcement will not be adequately encased and bonded to the concrete, which could lead to the cracking of foundation walls due to temperature changes and shrinkage.
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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