Question

Section B (no workings required). Question 14 Figure Q14 shows a 1 metre long I-beam supported at either end. The symmetric I beam has dimensions 50 x 30 mm for the

outer sections, and 25 x 30 mm for the middle section (width x height). The beam has a tensile strength of 300 MPa. Loading the beam in the middle and applying a Factor of Safety of 2. Select which is the maximum safe load to the nearest kilo-Newtons. 30 mm 30 mm 30 mm OA No Valid Answer OB 159 KN OC 39 KN OD 19 KN O E. 79 KN 50 mm 25 mm Load kN Figure Q14 1m (5 marks)

Fig: 1