Does Atmore, AL need an earthquake retrofit?

Under the seismic model IBC and ASCE 7 use for new construction, Atmore is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. That puts Atmore in the 28th percentile nationally for seismic hazard - higher than 28% of the 4,875 US cities USGS was checked against here.

Atmore by the numbers

The raw figures: peak ground acceleration 0.048g, short-period spectral response 0.101g, 1-second spectral response 0.064g. Among 107 Alabama cities in this dataset, Atmore ranks 84 for seismic hazard, the 22th percentile within the state. About 8,310 people live in Atmore, Alabama.

Bracing and bolting: the actual cost

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

What this means for insurance

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 Atmore address.

More on how this number was built

The methodology guide covers exactly how USGS's public design-maps API produced Atmore'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.