The average crushing strength of precast concrete blocks as per CAI is – McqOptions

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1.	The average crushing strength of precast concrete blocks as per CAI is __________
A.	4.5 N/mm<sup>2</sup>
B.	5 N/mm<sup>2</sup>
C.	3.5 N/mm<sup>2</sup>
D.	4 N/mm<sup>2</sup>
Answer» D. 4 N/mm<sup>2</sup>

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