Answer :
Final answer:
The compressive strength of a standard concrete mix is significantly above 500 psi. The reference data translates to roughly 2900 psi, far above the options provided. Hence, all the multiple-choice options are below the ultimate compressive strength of standard concrete.
Explanation:
The typical compressive strength of a standard concrete mix isn't directly listed in the multiple-choice options that you've provided. The possible values are in psi (pounds per square inch), a unit of pressure. However, from the reference data given, the ultimate compressive strength of concrete is stated as 20 × 106 N/m². Converting Newtons per square meter (N/m²) to psi for ease of understanding, this means that the ultimate compressive strength of concrete is roughly 2900 psi.
Therefore, all provided options (a) 100 psi, (b) 250 psi, (c) 350 psi, and (d) 500 psi are below the typical ultimate compressive strength for standard concrete. So, it is safe to say that the standard concrete mix has a compressive strength significantly above 500 psi.
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