The maximum shear force at a section is 56 kN. An ISWB of height 350 mm, breadth of 200 mm, the thickness of web 8 mm, with a section modulus of 887 cm3 is used as a beam at a section. The shearing stress is
1
10 N/mm2
2
20 N/mm2
3
28.4 N/mm2
4
41.6 N/mm2