Winfield's Seismic Design Category, explained

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Winfield 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 Winfield sits at the 30th percentile for seismic hazard among 4,875 US cities.

Winfield by the numbers

USGS's underlying values for Winfield: 0.05g peak ground acceleration, 0.104g at short period, 0.06g at 1 second. Within Kansas alone, Winfield ranks 5 of 63 cities by seismic hazard - the 94th percentile in-state. Winfield has a population of about 11,678.

Bracing and bolting: the actual cost

A full earthquake retrofit typically runs $5,000-$10,000 nationally (around $7,000 typical), driven mainly by house size and foundation type, not by Kansas specifically. California's Earthquake Brace + Bolt grant, which covers a large share of this cost, is a California-only program and does not apply in Kansas.

What this means for insurance

A Winfield homeowner cannot buy a standalone earthquake policy in most cases - it is added to an existing homeowners policy as an endorsement, so the place to start is a regular home-insurance quote.

Where Winfield's figures come from

Winfield's Category B and every number above trace to USGS's own ASCE 7-16 Design Maps service - see the methodology guide. See the category explainer for what Category B does and doesn't tell you about Winfield.