![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](https://www.gkseries.com/blog/wp-content/uploads/2023/08/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.jpg)
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.
![](https://www.gkseries.com/blog/wp-content/uploads/2023/08/Screenshot-464.png)
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.
![](https://www.gkseries.com/blog/wp-content/uploads/2023/08/Screenshot-465.png)