40.2. Seismic Zoning and Seismic Coefficient (IS 1893)

Try these first

1. 1.

   What are the four seismic zones in India?

   Hint

   Think of the scale from low to very high risk.

2. 2.

   What does the Zone Factor (Z) represent?

   Hint

   It's a numerical value related to risk.

3. 3.

   Which seismic zone in India has the highest risk of earthquakes?

   • Zone II
   • Zone III
   • Zone V

   Hint

   Look for the zone with the highest numerical designation.

4. 4.

   True or False: The Zone Factor for Zone III is 0.20.

   • True
   • False

   Hint

   Refer back to the specifics of Zone III's classification.

5. 5.

   A building in Zone IV has a Zone Factor of 0.32, an Importance factor of 1.2, and a Response reduction factor of 4. Calculate its design horizontal seismic coefficient assuming S/g is 0.4.

   Hint

   Use the given values in the formula step by step.

6. 6.

   Discuss the implications for building a hospital in Zone V versus a residential home in Zone II, considering the Importance factor.

   Hint

   Think about the role of buildings in emergencies versus regular use.