Chapter:

Two simply supported beams `B_1` and `B_2` have spans `l` and `2l` respectively. Beam  `B_1` has a cross-section of 1 x 1 units and beam `B_2` has a cross-section of 2 x 2 units. These beams are subjected to concentrated loads W each at centre of ir spans. The ratio of maximum flexural stress in se beams is