Provide a simple definition of structural design.
Give a description of both the LRFD and ASD...
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Civil Engineering
Provide a simple definition of structural design.
Give a description of both the LRFD and ASD design approaches.What is the fundamental
difference between the methods?
Identify three sources of variation in the strength of astructure and its components.
Provide two examples of serviceability limit states.
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Structural Design Structural design is defined as methodical investigation of the stability strength and rigidity of the structures In other words Structural design is methodical investigation to get the economical specification of all the strcuctural members constituting structure to carry out the predicted load safely The main purpose of the structural design is to produce a structure capable of resisting all the applied loads without failure during the whole intended life of the structure Allowable Stress Design ASD It is also known as Working Stress Design WSD method which is based on the principle that stresses developed in the structural members should not exceed a certain fraction of elastic limit This is old method of design which only considers elastic strength of material so it limits the allowable stresses to a fraction of this limit eg 4050 All loads are considered as service loads and no factor is applied to increase these services loads This method does not take into account the Plastic and Strain Hardening stages of
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