Question

Answer FOUR questions only. QI: In the figure, a steel l-section beam of (45 cm x 20 cm) is simply supported on a span length of (4.5 m) and having a moment of inertia of (35060 cm'). If the beam is strengthened by (30 cm) width and (2 cm) thick steel plates weldod at the top and bottom flanges. Calculate: (a) The greatest central load the beam will carry if the permissible bending stress in the plates is (120 MPa). (b) The minimum length of the plates required so that the maximum stress in the flanges of I- soction is not exceed (120 MPa). 2 cm 20 cm 45 cm 2 Cm

Answer 1

Answer:

width" (and any subsequent words) was ignored because we limit queries to 32 words.