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Bending Strength of Beams - Laterally Unsupported Beams

The semi-comp...

Question

The semi-compact section of a laterally unsupported steel beam has an elastic section modulus, plastic section modulus and design bending compressive stress of $500 c m^{3}$ , $650 c m^{3}$ and $200 M P a$ , respectively. The design flexural capacity (expressed in kNm) of the section is _____

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Solution

Design flexure capacity of semi-compact section
$= f_{C D} \times Z_{e}$
$= 200 \times 500 = 100 k N m$

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