Question

Parameter Steel .

Modulus of Elasticity 30,000,000 psi

Proportional/Elastic Limit 34,000 psi

Allowable Bending Stress 24,000 psi

Allowable Axial (C or T) Stress 24,000 psi

Allowable Shear Stress 16,500 ps

You have a 25-foot long, simply supported W12-50 steel beam. It is supporting a single 10,000# point load at its midpoint. Including the weight of the beam, answer the questions below:

A. What is the maximum bending moment (foot-#) and resulting maximum bending stress (psi)? Is this allowable?

B. What is the maximum vertical shear (#) and resulting average shear stress (psi)? Is this allowable?

C. What is the maximum deflection (inches)? Is this permissible if the allowable deflection is (1:360)?

Answer 1