Does Radcliff, KY need an earthquake retrofit?

Under the seismic model IBC and ASCE 7 use for new construction, Radcliff is 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. Nationally, Radcliff ranks above 70% of the 4,875 cities in this dataset for seismic hazard - the 70th percentile.

Where Radcliff sits in Kentucky

The raw figures: peak ground acceleration 0.1g, short-period spectral response 0.206g, 1-second spectral response 0.107g. Among 79 Kentucky cities in this dataset, Radcliff ranks 22 for seismic hazard, the 73th percentile within the state. About 22,706 people live in Radcliff, Kentucky.

Retrofit economics for Radcliff

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.

Earthquake insurance for a Radcliff 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 Radcliff address.

More on how this number was built

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