Situation 3: A6 m long fix-ended concrete beam has a width of 310 mm and an overall depth of 480 mm. The beam is reinforced with 4-28 mm diameter bars at the bottom and 2-28 mm bars on top. Steel cover measure from the center of the bar is 70 mm. f'c- 28 Mpa and fy-415 Mpa. Total dead load including beam weight is 22 kN/m. Assuming the analysis is Doubly-reinforced beam. 7. Determine the depth of compression block in mm. 8. Determine design ultimate moment of the section if reduction factor is 0.90. 9. Determine the additional concentrated live load can carry at the midspan.

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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.