Spring Hill's Seismic Design Category, explained

Spring Hill 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 Spring Hill in the 26th percentile nationally for seismic hazard - higher than 26% of the 4,875 US cities USGS was checked against here.

How Spring Hill compares

The raw figures: peak ground acceleration 0.045g, short-period spectral response 0.096g, 1-second spectral response 0.07g. Among 63 Kansas cities in this dataset, Spring Hill ranks 25 for seismic hazard, the 61th percentile within the state. About 10,070 people live in Spring Hill, Kansas.

What a retrofit costs in Spring Hill

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

More on how this number was built

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