For a simply supported prestressed concrete beam, compute the stress in the bottom fiber at the centerline. Properties of the beam are: Width of the beam, b: 253 mm; Depth of the beam, d: 429 mm; Concrete cover of the beam, cc: 45 mm; Prestressing Force, P: 641 KN; Superimposed Load, w: 9 KN/m; Length of the beam, L: 8 m. Stress is in unit MPa. Write only the value of your final answer. w (including selfweight) O00

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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.