Does Haysville, KS need an earthquake retrofit?

Under the seismic model IBC and ASCE 7 use for new construction, Haysville is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Nationally, Haysville ranks above 26% of the 4,875 cities in this dataset for seismic hazard - the 26th percentile.

Haysville by the numbers

The raw figures: peak ground acceleration 0.045g, short-period spectral response 0.095g, 1-second spectral response 0.056g. Among 63 Kansas cities in this dataset, Haysville ranks 24 for seismic hazard, the 63th percentile within the state. About 11,406 people live in Haysville, Kansas.

What a retrofit costs in Haysville

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.

Earthquake insurance for a Haysville home

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 Haysville address.

More on how this number was built

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