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  1. Simple Design
  2. Semi Rigid design
  3. Rigid design
  4. Plastic Design
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Option 4 : Plastic Design

Connection such as riveted, bolted and welded can be design as flexible, semi-rigid or rigid connections. Flexible connections are known as simple connections. Rigid design is done to resist both shear and bending moment at the connections whereas Semi rigid connections resist the bending moment in between flexible and rigid connections. While Plastic design method does not take into consideration the effect of impact, fatigue, creep and shrinkage etc.
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