3. Steel Section Properties

Try these first

1. 1.

   What is the primary alloy used in structural steel?

   Hint

   Think about the basic components of steel.

2. 2.

   Name a commonly used grade of steel.

   Hint

   These are frequently referenced values in structural engineering.

3. 3.

   What is the primary alloying element in structural steel?

   • Carbon
   • Silicon
   • Copper

   Hint

   Think about what component primarily enhances its properties.

4. 4.

   True or False: The yield stress of A36 steel is 36 ksi.

   • True
   • False

   Hint

   What is the designation we've studied in class?

5. 5.

   Given a steel beam with a yield strength of 50 ksi, determine how much load it can support over a span of 12 feet, assuming a rectangular cross-section of 10 inches by 5 inches.

   Hint

   Use I = b*h^3/12 for moment of inertia and load equations related to bending stress.

6. 6.

   Analyze how residual stresses could affect a new bridge design if hot-rolled beams are used without consideration of their stresses.

   Hint

   Consider how cooling affects the inner stresses of the beams.