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9.3.1.7.(1)
OS2OP2OH1OH4OS3OS1OS2OP2OH1OS3OS2OS3OP2
ObjectiveOS3 Safety in Use
Attribution
(b) [F20,F21,F80-OS3.1]
Application
Application 1: 
Mixes for site-batched, cast-in-place concrete that is not required to be reinforced that is used in floors, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].
Exceptions: 
except as stated in Clause 9.3.1.7.(1)(c), which applies to concrete for garage and carport floors where exposure to de-icing salts, water from rain or melting snow, freezing and thawing stresses, traffic, abrasion or other severe exposure conditions is likely.
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Intent
Intent 1: 
To limit the probability of:
  • an inappropriate cement/aggregate ratio, or
  • excessive water in concrete.
This is to limit the probability of:
  • aggregate segregation,
  • reduced compressive strength,
  • increased shrinkage and cracking, or
  • low resistance to air and moisture transfer.
This is to limit the probability of compromised structural integrity, which could lead to uneven concrete floor surfaces, which could lead to persons losing their balance, tripping or falling, which could lead to harm to persons.
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