If a concrete test cylinder measuring 6 in. × 12 in. breaks when the load on it reaches 169.5 k, what is the compressive strength of concrete? Express the strength in psi.
What will be an ideal response?
Load, P = 169.5 k
Area on which the load acts, A = 6 in. dia. circle = (!r2) = (!)32 = 28.27 in.2
Compressive strength of concrete, F = P/A = (169.5 k)/(28.27 in.2) = 2.46 ksi = 2,460 psi.
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