the bending strength of laterally unsupported beam is governed by
Answers
Answer:
The design bending strength of laterally supported beams is governed by yield stress and that of laterally unsupported beams is governed by lateral torsional buckling.
Answer:
The bending strength of a laterally unsupported beam is governed by lateral-torsional buckling.
Explanation:
Yield stress controls the design bending strength of laterally supported beams, while lateral-torsional buckling controls the design bending strength of laterally unsupported beams. For laterally supported beams, yield stress controls design bending strength, whereas, for laterally unsupported beams, lateral-torsional buckling controls design bending strength. A beam that has its compression flange restricted from buckling is said to be laterally supported. This beam has a variety of lateral supports for the compression flange. The compression flange can be attached to the concrete floor using shear connections or by embedding it into the concrete. The beam's proportions, the load's application method, and the support circumstances all have an impact on lateral-torsional buckling failure.
Thus, when a load is applied to an unsupported beam, the result is a combination of lateral displacement and twisting, known as laterally torsional buckling (LTB).