32.12.3. Towers and Chimneys

Try these first

1. 1.

   What unique structural aspects make towers and chimneys susceptible to seismic forces?

   Hint

   Think about how gravity and motion affect tall structures.

2. 2.

   Define overturning moments.

   Hint

   What happens to a tall structure when pushed?

3. 3.

   What primarily causes higher mode effects in towers and chimneys?

   • A) Their height
   • B) Their foundation type
   • C) Their material
   • D) Their use of energy dissipators

   Hint

   Think about how height affects oscillation frequencies.

4. 4.

   True or False: Overturning moments are not a concern in the design of tall chimneys.

   • True
   • False

   Hint

   Consider the forces acting on a chimney during a quake.

5. 5.

   Analyze a scenario where a newly built chimney faces criticisms for its design in seismic-prone areas. What engineering measures would you recommend to improve its safety?

   Hint

   Consider energy dissipation techniques to reduce overturning forces.

6. 6.

   Given a scenario where two towers of different heights experience the same seismic event, explain why the taller tower might suffer more damage, citing specific dynamics.

   Hint

   Think about the relationship between height and seismic response.