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9.12.1.1.(3)
OH1OS2OP2OH4OS3
ObjectiveOS3 Safety in Use
Attribution
[F20,F21-OS3.1] Applies to floors and elements that support floors.
Application
Application 1: 
Removal of organic material from the bottom of excavations for 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 that organic material will decompose beneath foundations, which could lead to soil having an inadequate bearing capacity, which could lead to the undue subsidence of soil under footings, which could lead to the cracking of foundations or the deformation of building superstructures.
For floors and elements supporting floors, this is to limit the probability of excessive deflection or damage, which could lead to rough or uneven floor surfaces, which could lead to persons tripping or falling, which could lead to harm to persons.
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