A single span beam which carries a uniform load of 30kN/m has an unsupported span of 5m. It is made up of yakal 150mm x 300mm wooden section. It is subjected to a compressive load of 300kN at its centroid. Allowable stresses of Yakal using 80% stress grade: Bending and tension parallel to the grain = 24.5Mpa Modulus of Elasticity in Bending -9780Mpa Compression parallel to the grain -15.8Mpa Compression perpendicular to the grain -6.27Mpa Shear parallel to the grain -2.49Mpa The beam is fixed at both ends What is the ratio of combined stresses and indicate if the beam is safe, unsafe.

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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.