Does Lawrenceburg, KY need an earthquake retrofit?

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Lawrenceburg in Seismic Design Category C: Moderate seismic hazard. Code adds irregular-building restrictions and requires bracing of some nonstructural components (e.g. tall shelving, water heaters) in addition to structural detailing. That puts Lawrenceburg in the 68th percentile nationally for seismic hazard - higher than 68% of the 4,875 US cities USGS was checked against here.

Lawrenceburg by the numbers

The raw figures: peak ground acceleration 0.079g, short-period spectral response 0.164g, 1-second spectral response 0.086g. Among 79 Kentucky cities in this dataset, Lawrenceburg ranks 48 for seismic hazard, the 40th percentile within the state. About 12,189 people live in Lawrenceburg, Kentucky.

Retrofit economics for Lawrenceburg

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

More on how this number was built

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