1. STRUCTURAL MATERIALS

Try these first

1. 1.

   What is steel primarily composed of?

   Hint

   Think about the main elements used in its alloy.

2. 2.

   What does yield stress refer to?

   Hint

   Consider when a material starts to change shape.

3. 3.

   What is the Young's modulus of steel?

   • 20,000 ksi
   • 29,000 ksi
   • 32,000 ksi

   Hint

   Remember the typical values when discussing materials.

4. 4.

   Is reinforcing steel always used in concrete structures?

   • True
   • False

   Hint

   Think about the properties of concrete.

5. 5.

   Given a steel beam of grade A572, calculate the maximum load it can support if the beam's yield stress is 50 ksi and it has a section modulus of 10 in³.

   Hint

   Relate yield stress to the force a section can bear.

6. 6.

   You have a concrete structure with reinforcing bars of yield stress 60 ksi. Analyze the expected performance when subjected to a tensile load.

   Hint

   Consider how rebar properties affect concrete under tension.