Steel is durable...
Steel displays the strongest respond to earthquake. Strength of steel of unquestionable due to its ductility; 21 times more flexibility in comparison with timber and 10 times more than that of reinforced concrete (concrete + iron equipment); appropriateness to poor ground areas; lightness; small ratio of specific weight to carried load; elongation rate; capability to change its structure under load and capability to turn back prior resistance when loading is completed; more homogenous* and isotropic** structure in comparison with concrete; and its high resistance.
Steel displays the strongest respond to earthquake. Strength of steel of unquestionable due to its ductility; 21 times more flexibility in comparison with timber and 10 times more than that of reinforced concrete (concrete + iron equipment); appropriateness to poor ground areas; lightness; small ratio of specific weight to carried load; elongation rate; capability to change its structure under load and capability to turn back prior resistance when loading is completed; more homogenous* and isotropic** structure in comparison with concrete; and its high resistance.
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