ARCHIVED - 9.14.4.1.(1)

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9.14.4.1.(1)


Objective	OP2 Structural Sufficiency of the Building
Attribution	(b) [F21-OP2.1,OP2.4] (b) [F21-OP2.3] Applies to elements that support or are part of an environmental separator.
Application	Application 1: Granular material that is laid down to drain the bottom of exterior foundation walls of buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9]. Exceptions: except for: for the foundation walls of crawl spaces whose exterior walls have 25% or more of their total area above exterior ground level open to the outdoors [see Sentence 9.18.1.1.(1)] and where drainage can be shown to be unnecessary [see Sentences 9.18.5.1.(1) and (2)], for foundation walls that are subject to continuous hydrostatic pressure, as stated in Sentence 9.14.2.1.(1), which applies to foundation walls that are drained by drain tiles or pipes, and for foundation walls that are effectively drained by the native soil or that have otherwise demonstrated that they do not require drainage.
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Intent	Intent 1: To limit the probability that weathering of pyritic material will lead to excessive loading on foundation walls, under lateral soil pressure, with attendant structural damage to the foundation and superstructure. This is to limit the probability of: compromised structural integrity of the foundation or supported elements, or where the foundation serves as or supports an environmental separator, compromised environmental separation elements, which could lead to condensation, rainwater ingress or the ingress of moisture from the ground, which could lead to deterioration of building elements, which could lead to compromised structural integrity. This is to limit the probability of damage to the building.
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