22.3.1. Verification

Try these first

1. 1.

   What is the plastic moment capacity (M_p)?

   Hint

   Think of yielding.

2. 2.

   Define inelastic buckling.

   Hint

   Consider what happens when excessive loads are applied.

3. 3.

   What is the primary purpose of verifying a beam column's adequacy?

   • To ensure it meets aesthetic standards
   • To confirm it can withstand loading conditions
   • To calculate material costs

   Hint

   Think about the meaning of verification in structural design.

4. 4.

   True or False: Inelastic buckling can occur even if a beam is made of strong material.

   • True
   • False

   Hint

   Recall the conditions under which buckling happens.

5. 5.

   A W12 120 column is subject to an axial load of 25 kips and a moment of 60 k-ft. Calculate if this section is adequate after verifying all moment capacities and applying moment magnification.

   Hint

   Make sure to calculate B for moment magnification before checking adequacy.

6. 6.

   How would the adequacy change if the yield stress of the material increased to 50 ksi? Recalculate the M_p and M_r and determine the adequacy.

   Hint

   Analyze how increasing material strength alters moment capacities.