1.

The 28 days cube strength of mass concrete using aggregates of maximum size 5 cm for gravity dams should be

A. Between 150 to 300 kg/cm<sup>2</sup>
B. Between 350 to 600 kg/cm<sup>2</sup>
C. Between 150 to 400 kg/cm<sup>2</sup>
D. Less than 200 kg/cm<sup>2</sup>
Answer» E.


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