Stone Mountain, GA: what USGS's seismic model says

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Stone Mountain in Seismic Design Category C: Moderate seismic hazard. Code adds irregular-building restrictions and requires bracing of some nonstructural components (e.g. tall shelving, water heaters) in addition to structural detailing. Nationally, Stone Mountain ranks above 68% of the 4,875 cities in this dataset for seismic hazard - the 68th percentile.

Where Stone Mountain sits in Georgia

The raw figures: peak ground acceleration 0.091g, short-period spectral response 0.183g, 1-second spectral response 0.085g. Among 148 Georgia cities in this dataset, Stone Mountain ranks 86 for seismic hazard, the 42th percentile within the state. About 6,552 people live in Stone Mountain, Georgia.

What a retrofit costs in Stone Mountain

Outside California, no state-level retrofit grant equivalent to Brace + Bolt could be found for Georgia. A typical retrofit still runs $5,000-$10,000 nationally, about $7,000 for a common single-family job.

Insuring against this, not just retrofitting

Outside California, earthquake coverage is typically sold as an endorsement added to a standard homeowners policy, not a separate product - worth asking about directly when getting a home-insurance quote for a Stone Mountain address.

More on how this number was built

The methodology guide covers exactly how USGS's public design-maps API produced Stone Mountain's numbers. The guide to what a Seismic Design Category actually means covers why a category is never a substitute for an engineer's assessment of one specific house.