Roanoke, TX: what USGS's seismic model says

Roanoke carries Seismic Design Category B under USGS's ASCE 7-16 model. 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 Roanoke sits at the 31th percentile for seismic hazard among 4,875 US cities.

How Roanoke compares

The raw figures: peak ground acceleration 0.052g, short-period spectral response 0.106g, 1-second spectral response 0.054g. Among 384 Texas cities in this dataset, Roanoke ranks 78 for seismic hazard, the 80th percentile within the state. About 10,895 people live in Roanoke, Texas.

Bracing and bolting: the actual cost

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

More on how this number was built

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