3 Given a concrete beam (width b= 10 in., depth h=25 in.) with flexural reinforcement at the bottom, the transformed moment of inertia is I=14,740 in“, and the location of the neutral axis from top of the beam is ỹ = 13.2 in, assuming all material is elastic, calculate the maximum tensile stress of the concrete when a positive bending moment M = 40 kip-ft is applied to the beam. Is the section cracked under the given moment if concrete is normal weight and the compressive strength fe' is 3000 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.