115 - FAO

115. Chapter 7. structural design Introduction thrust, shear, bending moments and twisting moments), structural design is the methodical investigation of the as well as stress intensities, strain, deflection and stability, strength and rigidity of structures. The basic reactions produced by loads, changes in temperature, objective in structural analysis and design is to produce shrinkage, creep and other design conditions. Finally a structure capable of resisting all applied loads without comes the proportioning and selection of materials for failure during its intended life. The primary purpose the members and connections to respond adequately to of a structure is to transmit or support loads. If the the effects produced by the design conditions. structure is improperly designed or fabricated, or if the The criteria used to judge whether particular actual applied loads exceed the design specifications, proportions will result in the desired behavior reflect the device will probably fail to perform its intended accumulated knowledge based on field and model tests, function, with possible serious consequences.

standard details and standard components for building construction published in handbooks or guides. design codes Many countries have their own structural design codes, codes of practice or technical documents which perform a similar function. It is necessary for a designer to become familiar with local requirements or recommendations in

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