A simply supported rectangular beam of length 6.45m has a width of 437.5 and an effective depth of 692.5. The beam is to be reinforced using 12 mm bars. The f'c is 28 and the fy is 420. The beam supports service dead loads of 31 kN/m and 39.5kN/m., respectively. 1. Calculate the ultimate moment capacity of the beam. 2. Calculate the height of the equivalent stress block. 3. Determine the number of bars required for this beam

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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.