Dothan's Seismic Design Category, explained

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Dothan in Seismic Design Category B: Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Rank it against the rest of the country and Dothan sits at the 20th percentile for seismic hazard among 4,875 US cities.

Where Dothan sits in Alabama

The raw figures: peak ground acceleration 0.039g, short-period spectral response 0.083g, 1-second spectral response 0.058g. Among 107 Alabama cities in this dataset, Dothan ranks 106 for seismic hazard, the 1th percentile within the state. About 71,650 people live in Dothan, 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 Dothan address.

More on how this number was built

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