Question 3 A steel cantilever beam, of length 2L, has an I-section, see Figure Q3. The cantilever beam is under a uniformly distributed load q = 195 kN/m applied in its vertical plane of symmetry at OA part of the span. The yield strength of the steel is [] = 440 MPa; the Young's modulus = 236 GPa. L=2m and the coordinates of Point H are x= 0 mm, y = -85 mm, z= 0 mm. y 9 A B 20mm L L Figure Q3 -220mm b 10mm H 20mm 180mm a) The factors of safety predicted at point H by the maximum shear stress theory of failure (Tresca criterion)