Richland Center's Seismic Design Category, explained

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Richland Center 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 Richland Center sits at the 16th percentile for seismic hazard among 4,875 US cities.

Where Richland Center sits in Wisconsin

The raw figures: peak ground acceleration 0.03g, short-period spectral response 0.062g, 1-second spectral response 0.044g. Among 157 Wisconsin cities in this dataset, Richland Center ranks 94 for seismic hazard, the 40th percentile within the state. About 5,052 people live in Richland Center, Wisconsin.

Retrofit economics for Richland Center

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

More on how this number was built

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