Solution to Problem 549 | Unsymmetrical Beams

Problem 549
A beam with cross-section shown in Fig. P-549 is loaded in such a way that the maximum moments are +1.0P lb·ft and -1.5P lb·ft, where P is the applied load in pounds. Determine the maximum safe value of P if the working stresses are 4 ksi in tension and 10 ksi in compression.
 

Inverted U-beam

 

Solution 549