The simply supported beam is made of timber that has an allowable bending stress of σ = 6.72 MPa and an allowable shear stress of 𝜏 = 0.525 MPa. Determine the dimension b if it is to be rectangular and have a height-to-width ratio of 1.25.

The simply supported beam is made of timber that has an allowable bending stress of σ = 6.72 MPa and an allowable shear stress of 𝜏 = 0.525 MPa. Determine the dimension b if it is to be rectangular and have a height-to-width ratio of 1.25.