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4.2.4.3.(1)
OS2OP2OP4
ObjectiveOS2 Structural Safety
Attribution
Application
Application 1: 
Identification and classification of soil, rock and groundwater, and descriptions of their engineering and physical properties for the design and construction of excavation and foundation systems.
This applies to buildings described in Sentence 1.3.3.2.(1) of Division A and buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A] that are required to be designed to the requirements of Part 4.
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Intent
Intent 1: 
To limit the probability that the identification and classification of ground materials will not be stated in terms that are commonly understood in practice for verification, which could lead to insufficient capacity of the foundations or insufficient stability of the excavation, which could lead to structural failure, which could lead to harm to persons.
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