ARCHIVED - 9.14.3.1.(1)

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9.14.3.1.(1)


Objective	OP2 Structural Sufficiency of the Building
Attribution	[F60-OP2.1,OP2.3]
Application	Application 1: Drain tiles and drain pipes that are installed at 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 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)], 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 a layer of gravel or crushed rock, 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 the performance of drain tiles or drain pipes will fall significantly below expectations, with respect to: strength (e.g. tensile, compressive, impact, hydrostatic, flexural), resistance to deterioration (e.g. due to freeze-thaw stresses, chemical attack, corrosion), the integrity of connections, or permeance (of perforated products). This is to limit the probability of excessive moisture loading on foundation walls and basement floors. This is to limit the probability of the ingress of moisture from the ground, which could lead to: compromised structural integrity of foundation walls and basement floors, or of elements supported by the walls or floors, or deterioration, which could lead to compromised integrity of elements supported or protected by exterior foundation walls. This is to limit the probability of: the space being unsuitable for its intended use, or damage to the building.
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