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You have left out the most important data of the concrete - grade 25 concrete (M25), which has a compressive strength ($f_c'$) of, approximately, 3600 psi (or 3625 psi to be close to exact). I assume you are an engineer, from here you shall be able to determine its elastic (Young's) modulus, maximum tensile strength prior to crack, and the allowable stresses ...


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