40 kN-m B 70 kN VC 2 m 2 m The beam has the following cross section: H 3 m Hinge 18 II 25 III IV 40 kN/m 18 4 m [cm] E 64 An engineer has found a fiber that can be sticked to the top or the bottom fibers to increase the tensile allowable stress from 5 MPa to 50 MPa. Is the fiber necessary? Draw a scheme where you would need the fiber.

A small aluminum alloy [E = 65 GPa] tee shape is used as a simply supported beam as shown. For this beam, a = 125 mm. The cross-sectional dimensions of the tee shape are b = 15 mm, d = 23 mm, and t = 9 mm. After loads are applied to the beam at B, C, and D, a compressive normal strain of 460 με is measured from a strain gage located at c = 9 mm below the topmost edge of the tee stem at section 1-1. What is the applied load P?

For a point on a steel specimen, the principal stresses are known to be 01 = 360 MPa and O2 = 60 MPa. Calculate the minimum yield stress of the material according to the Tresca criterion. Give your answer in MPa to 3 significant figures.

Solve it correctly please.