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Q: According to Is 456-2000, the design of concrete mix should be based on all of the following, EXCEPT:
  • A. durability
  • B. workability
  • C. quality control
  • D. cost
Correct Answer: Option D - As per IS : 456-2000, Clause 9.2, The constructor shall carry out the mix design and the mix so designed, shall be approved by the employer within the limitation of parameters and other stipulations laid down by this standard. • The design of concrete mix should be based on durability, workability and quality control.
D. As per IS : 456-2000, Clause 9.2, The constructor shall carry out the mix design and the mix so designed, shall be approved by the employer within the limitation of parameters and other stipulations laid down by this standard. • The design of concrete mix should be based on durability, workability and quality control.

Explanations:

As per IS : 456-2000, Clause 9.2, The constructor shall carry out the mix design and the mix so designed, shall be approved by the employer within the limitation of parameters and other stipulations laid down by this standard. • The design of concrete mix should be based on durability, workability and quality control.