Design a simply supported rectangular beam with a span of 26 feet and carrying an external dead load of 75 lb/ft and a liv load of 1200 lb/ft. Compressive strength of concrete is 4500 psi. (a) Yield strength of steel is 60,000 psi (b) Yield strength of steel is 40,000 psi

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Design criteria for structural loading

The different loads such as loads due to self-weight (dead load) and external loads such as live load, wind loads, seismic load, snow load, and other loads and load combinations that influence the design of a building are called structural loading. The nature of the applied load differs from changes in the location, design, and type of materials used. The design criteria require that structures must be designed and constructed to be able to withstand all load types that are expected to act upon the structure and render its usage for the designated purpose. The structural members such as beams, slabs, columns, and foundations help the structure to withstand the applied load. There are different institutes such as ASCE and ACI that provide building design codes to assure minimum safety requirements and quality of the structures.