Among the following, which is not advisable for having Earthquake safe…
2023
Among the following, which is not advisable for having Earthquake safe buildings?
- A.
To consult qualified architects and structural engineers while constructing the building.
- B.
To use heavy construction materials at roof area in the highly seismic area.
- C.
To fix cupboards and shelves to the walls.
- D.
To have firefighting equipment in working order.
Attempted by 61 students.
Show answer & explanation
Correct answer: B
Correct answer: Using heavy construction materials at the roof area in highly seismic zones is not advisable.
Why this is not advisable:
Heavier roofs increase the building's mass, and seismic forces are proportional to mass multiplied by ground acceleration, so a heavier roof raises the forces the structure must resist.
A heavy roof raises the center of mass, increasing overturning moments and instability during shaking.
Using lightweight roofing materials and reducing mass at the top improves seismic performance and reduces collapse risk.
Why the other measures are advisable:
Consulting qualified architects and structural engineers ensures the building is designed and detailed according to seismic codes and best practices.
Fixing cupboards and shelves to walls prevents them from toppling and causing injuries during shaking.
Keeping firefighting equipment in working order helps control fires that may start as a result of earthquake damage.
Practical recommendations:
Use lightweight roofing materials and reduce mass at higher levels of the building.
Ensure proper seismic detailing, bracing, anchors, and connections as specified by qualified engineers.
Secure fixtures and maintain emergency equipment to reduce injury and damage during and after an earthquake.