The angle dispersion of a concentration load on the flange to the web plate of a steel beam in case of web buckling is

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BPSC AE Paper 5 (Civil Engineering) 2019 Official Paper
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  1. 90 degree with the horizontal
  2. 60 degree with the vertical
  3. 45 degree with the horizontal
  4. 30 degree with the vertical

Answer (Detailed Solution Below)

Option 3 : 45 degree with the horizontal
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Detailed Solution

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Buckling strength:

A certain portion of the beam at supports acts as a column to transfer the load from the beam to the support. Hence, under this compressive force, the web may buckle. This may happen under a concentrated load on the beam also. The load dispersion angle is taken as 45° with the horizontal.

F1 A.M Madhu 13.05.20  D31

Bearing area is calculated at the root of the web by dispersion at a slope of 1:2.5.

∴ The angle dispersion of a concentration load on the flange to the web plate of a steel beam is 45° with the horizontal.

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