Question

1. after the 1886 earthquake in charleston, many buildings were retrofitted with the circular plates and rods shown in this image. what is the purpose of these earthquake bolts, and how do they help protect the structure during seismic activity? they create friction in the walls during heavy rainfall. they attach the exterior walls to major support beams to prevent collapse during shaking. they decouple the building to withstand earthquake history. they serve as lightning rods to direct seismic charge safely into the ground.

Explanation:

Earthquake bolts reinforce connections between building components like walls and support beams. They prevent collapse during seismic shaking by keeping these elements securely joined.

Answer:

They anchor the exterior walls to major support beams to prevent collapse during shaking.