What would be the frictional stress if the spacing between contraction joints is 4.2 m, the coefficient of friction is 1.3 and the unit weight of concrete is 2400 kg/m3?

What would be the frictional stress if the spacing between contractio

1.	What would be the frictional stress if the spacing between contraction joints is 4.2 m, the coefficient of friction is 1.3 and the unit weight of concrete is 2400 kg/m3?
A.	0.66 kg/cm2
B.	0.70 kg/cm2
C.	0.76 kg/cm2
D.	0.60 kg/cm2
Answer» B. 0.70 kg/cm2

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What would be the frictional stress if the spacing between contraction joints is 4.2 m, the coefficient of friction is 1.3 and the unit weight of concrete is 2400 kg/m3?

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