Sunbury's Seismic Design Category, explained

Sunbury carries Seismic Design Category B under USGS's ASCE 7-16 model. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. That puts Sunbury in the 35th percentile nationally for seismic hazard - higher than 35% of the 4,875 US cities USGS was checked against here.

Sunbury by the numbers

The raw figures: peak ground acceleration 0.058g, short-period spectral response 0.116g, 1-second spectral response 0.057g. Among 254 Ohio cities in this dataset, Sunbury ranks 211 for seismic hazard, the 17th percentile within the state. About 9,705 people live in Sunbury, Ohio.

Bracing and bolting: the actual cost

Outside California, no state-level retrofit grant equivalent to Brace + Bolt could be found for Ohio. 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 Sunbury address.

More on how this number was built

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