Design Selection - College of Engineering

Fortunately, steel and concrete have very similar coefficients of thermal expansion and are chemically inert when put in contact with one another. Accordingly, they work very well together. Steel for reinforcing bar is made in three strengths: 75,000 ksi tensile strength (grade 75); 60,000 ksi tensile strength (grade 60); and 40,000 ksi (grade 40). ................
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