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9.26.3.1.(3)
OS2OH1
ObjectiveOS2 Structural Safety
Attribution
Application
Application 1: 
Slopes for profiled metal roof cladding systems specifically designed for low-slope applications for roofs that have lower slopes than the minimum slopes required by Table 9.26.3.1., on 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 an insufficient slope of the roof or construction that serves as a roof, which could lead to inadequate drainage or water pooling, which could lead to:
  • water accumulation, which could lead to damage to roofing material, which could lead to the premature failure of roofing, or
  • water ingress at roofing joints.
This is to limit the probability of precipitation or meltwater ingress, which could lead to further deterioration, which could lead to the structural failure of roofs or assemblies protected by roofs, which could lead to harm to persons.
Intent 2: 
To supersede the application of Sentence 9.26.3.1.(1) to allow lower slopes where roofing material specifically designed for lower slopes will be used.
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