Calculate the cracking moment  (Mcr)  for the plain concrete. Assume normal-weight concrete  and f’c  =  4,000  psi. a)  Use  the internal couple  method.  b)  Check using the flexure formula.

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Crack Detection

Concrete materials are meant for supporting structures, building foundations and they act as several load-bearing structures. Over time, due to environmental conditions, and based on the constituent materials used, concrete materials are subjected to a great degree of distress. Corrosion of the reinforcement bars due to chemical influences, uneven base, earthquake, drying shrinkages, and alkali-aggregate reactions are some of the reasons for concrete distress.