A 4.8mtall, 30cmdiameter concrete column supports a 5.0×105 kg load. By how much is the column compressed?
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2 answers

compression distance = (column length)*strain
Strain = Stress/(Young's modulus)
Stress = (load)/(area) = M*g/[(pi/4)D^2]
Look up Young's modulus for concrete and do the numbers. The modulus might be dfferrnt if the concrete is reinforced with steel, as most is. 👍
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answered by drwls 
According to information online, use 26,000*10^6 Pascals for Young's modulus of concrete, whether reinforced or not.
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answered by drwls
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