1. Design of Steel Columns Under Axial Loads

Try these first

1. 1.

   What is the formula for calculating the factored axial load (Pu)?

   Hint

   Think about safety in structural design.

2. 2.

   Name one type of rolled steel section used in column design.

   Hint

   Think of the design codes associated with steel.

3. 3.

   What does Pu stand for in column design?

   • Factored Uplift
   • Factored Axial Load
   • Partial Uplift

   Hint

   Think about the full name related to axial forces.

4. 4.

   Steel columns can fail due to buckling if...

   • True
   • False

   Hint

   Consider the risks associated with inadequate support.

5. 5.

   A steel column is required to support an axial load of 400 kN. If the partial safety factor is 2.0, what is the factored axial load (Pu)? Discuss how the selected section should be determined based on this load.

   Hint

   Balance between the load and available sections.

6. 6.

   Design a built-up column using two ISMB 300 sections spaced with lacing. Calculate the effective length and moment of inertia about the principal axis, ensuring local buckling checks are met. Discuss the spacing of the lacing in your design.

   Hint

   Connect your calculations to code provisions.