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

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, 𝑓_𝑦 = 250 𝑀𝑃𝑎 and partial safety factor for material, 𝛾_𝑚𝑜 = 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)]×8
=[75+2.5(20+10)]×8
=1200 mm2, respectively. Root radius of the I-section is 10 mm. Assume: material yield stress, 𝑓_𝑦 = 250 𝑀𝑃𝑎 and partial safety factor for material, 𝛾_𝑚𝑜 = 1.10.