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Posted by **Antonio** on Sunday, April 10, 2011 at 3:49pm.

- Physics -
**drwls**, Sunday, April 10, 2011 at 4:45pmcompression 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.

- Physics -
**drwls**, Sunday, April 10, 2011 at 4:50pmAccording to information online, use 26,000*10^6 Pascals for Young's modulus of concrete, whether reinforced or not.

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