A short rectangular column 300 mm on one side and 400 mm on the other side.  It is reinforced with 10-20-mm-diameter longitudinal bars equally distributed to the shorter sides of the column.  Use f’c = 21 MPa and fy = 420 MPa. Determine the nominal axial strength (kN) of the column as per NSCP 2015. Determine the required spacing (mm) of laterial ties 10-mm-dia.  Determine the location of the plastic centroid (mm) measured from one short edge.

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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.