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4.2.2.3.(1)
ApplicationIntent
OS2OP2OP4
ObjectiveOS2 Structural Safety
Attribution
[F20-OS2.2,OS2.6] [F21-OS2.6]
Application
Application 1: 
Field review during the excavation and construction of foundations.
This applies to buildings described in Sentence 1.3.3.2.(1) of Division A and to buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9] that are required to be designed in accordance with the requirements of Part 4.
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Intent
Intent 1: 
To limit the probability that:
  • the ground conditions will not be consistent with the design, and
  • excavation, dewatering and construction will not be carried out in accordance with the design and good engineering practice.
This is to limit the probability of structural failure, including excavation collapse, which could lead to harm to persons.
Intent 2: 
To facilitate, through qualification of persons involved with the review, the determination of compliance with this requirement.
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