41.18. Seismic Design of Water Tanks and Elevated Structures

Try these first

1. 1.

   What is the main governing code for seismic design of water tanks?

   Hint

   Think about the codes governing structural designs.

2. 2.

   Define hydrodynamic pressure.

   Hint

   Consider the effect of water movement during an earthquake.

3. 3.

   What is IS 1893 (Part 2): 2014 related to?

   • Wind resistance
   • Seismic design of water tanks
   • Thermal insulation

   Hint

   Think about which forces could impact tanks during an earthquake.

4. 4.

   True or False: Uplift forces can cause a structure to lift off its base during seismic events.

   • True
   • False

   Hint

   Consider how forces may change the position of structures.

5. 5.

   Design an elevated water tank for a site classified under seismic zone IV. You must account for hydrodynamic pressures, sloshing effects, and potential failure modes.

   Hint

   Focus on the properties of water under dynamic conditions and structural integrity.

6. 6.

   Given a scenario where an elevated tank has experienced staging collapse due to slenderness, evaluate what design changes could have prevented this failure.

   Hint

   Consider how increasing strength and width affects overall stability.