30. A 6-m simple rectangular beam having dimensions of 150 mm x
200 mm is loaded with 10 kN/m uniformly distributed load
throughout the span. What should be the additional maximum
safe value of concentrated load P that will be applied in the
midspan of the beam for not exceeding the bending stress of the
beam of 128 MPa and a shearing stress of 3 MPa.
(ANS. 55.33 kN)
