34.17. Earthquake Design Philosophy as per Indian Codes

Try these first

1. 1.

   What is the main aim of the limit state approach?

   Hint

   Think about the two types of earthquakes we consider in design.

2. 2.

   Name one Indian code relevant to earthquake design.

   Hint

   This code outlines criteria for seismic design.

3. 3.

   What does the limit state approach aim to ensure?

   • Collapse prevention during all earthquakes
   • Limited damage during moderate earthquakes
   • Both A and B

   Hint

   Remember the dual targets we discussed in the lessons.

4. 4.

   True or False: Ductile detailing allows structures to become stiffer during seismic events.

   • True
   • False

   Hint

   Consider the properties of materials under stress.

5. 5.

   Design a conceptual model for a hospital in a seismic zone, applying the limit state approach and relevant IS codes. Include the rationale behind your material choices and structural designs.

   Hint

   Focus on materials that provide both strength and ductility.

6. 6.

   Evaluate a current building design for compliance with IS 1893. Identify potential hazards if it fails to meet the listed codes during an earthquake.

   Hint

   Check for consistency with both MCE and DBE requirements.