Slenderness limits

The Code requires that a beam has an adequate factor of safety against buckling.

Providing that the following requirements are met, the safety against lateral buckling may be assumed to be adequate

Ot 1

where b = width of the compression flange, which can be taken as ¿>eff for T and L beams h = total depth of the beam

/ = unrestrained length of the compression flange taking lateral bracing into account

For example, consider the beam shown in Figure 3.16.
0 -1

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