Does Covington, KY need an earthquake retrofit?

Under the seismic model IBC and ASCE 7 use for new construction, Covington is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. That puts Covington in the 48th percentile nationally for seismic hazard - higher than 48% of the 4,875 US cities USGS was checked against here.

Covington by the numbers

The raw figures: peak ground acceleration 0.073g, short-period spectral response 0.147g, 1-second spectral response 0.078g. Among 79 Kentucky cities in this dataset, Covington ranks 64 for seismic hazard, the 19th percentile within the state. About 41,611 people live in Covington, Kentucky.

Bracing and bolting: the actual cost

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.

Insuring against this, not just retrofitting

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 Covington address.

More on how this number was built

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