(a) Compute the horizontal deflection at D and the vertical deflection at F by the virtual work method. (b) If members GF, BI and CF are 3mm longer, 2mm longer and 1mm  shorter, compute the horizontal deflection at G? Given E=200GPa and A=103mm2

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Beams

In structural engineering, a beam is a component made of a variety of materials (including steel alloys, and wood) that can resist loads applied laterally to the beam axis. Members, elements, rafters, shafts, and purlins are all terms used to describe beams.