Q. A rolled I-section beam is supported on a 75 mm wide bearing plate as shown in the figure. Thicknesses of flange and web of the I-section are 20 mm and 8 mm, respectively. Root radius of the I-section is 10 mm. Assume: material yield stress, ๐๐ฆ = 250 ๐๐๐ and partial safety factor for material, ๐พ๐๐ = 1.10.
As per IS: 800-2007, the web bearing strength (in kN, round off to 2 decimal places) of the beam is
Solution:
Effective area in bearing=[75+2.5(flange thickness + root radius)]ร8
=[75+2.5(20+10)]ร8
=1200 mm2, respectively. Root radius of the I-section is 10 mm. Assume: material yield stress, ๐๐ฆ = 250 ๐๐๐ and partial safety factor for material, ๐พ๐๐ = 1.10.
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