When a structure is built , apart from being aesthetic, the structure should be very stable. The stability of the structure is a very important aspect. Stability not only prevents damage to property, but also the damage to life. The real estate value of a damaged structure is reduced considerably. Structural engineering deals with the stability of any structure, under normal circumstances and during natural calamities like earthquakes and landslides.
The structural design of a building should make sure that the building is able to stand up safely and resist deflections or movements which may cause fatigue, cracking or failure of fixtures, fittings and discomfort to its occupants. It should consider also consider the practicality of the design.
Structural engineering requires the knowledge of applied mechanics, materials science and applied mathematics to understand and predict how structures support and resist self-weight and imposed loads. Apart from a detailed know how of the engineering aspects the engineers need also know the local building codes and environmental conditions. for example a structural engineer in San Francisco will have to consider humidity and wind loads while planning the construction.
Every residential structure must make a balanced use of columns , beams, plates and concrete slabs to attain proper stability. Wooden house are specially designed and make extensive use of hardwood and softwood in different parts. A structural designer in San Francisco will know better to use proper varnishes and waterproof coatings to prevent against moist conditions.
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