For the concrete beam shown, the modulus of elasticity is 25 Gpa for the concrete and 200 GPa for the steel. Knowing that b= 200 mm and d=450 mm, and using an allowable stress of 12.5 MPa for the concrete and 140 MPa for the steel, calculate (a) the required area As of the steel reinforcement if the beam is to be balanced, (b) the largest allowable bending moment. Hint: The design of a reinforced concrete beam is said to be balanced if the maximum stresses in the steel and concrete are equal, respectively, to the allowable stresses σs and oc. B0.176/3 A 2440 960241

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Composite Construction

Composite construction is the construction of structures in which two or more materials are used. Regarding structural engineering, composite construction is a construction where two materials are bound together in a technical manner such that both the materials act as a single unit to carry and transfer the load. The motives of composite construction are to increase the structural strength, make structures more aesthetic, and provide a sustainable environment.