Gibsonville, NC: what USGS's seismic model says

Under the seismic model IBC and ASCE 7 use for new construction, Gibsonville is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. That puts Gibsonville in the 40th percentile nationally for seismic hazard - higher than 40% of the 4,875 US cities USGS was checked against here.

Where Gibsonville sits in North Carolina

The raw figures: peak ground acceleration 0.064g, short-period spectral response 0.133g, 1-second spectral response 0.063g. Among 147 North Carolina cities in this dataset, Gibsonville ranks 98 for seismic hazard, the 34th percentile within the state. About 9,744 people live in Gibsonville, North Carolina.

What a retrofit costs in Gibsonville

Outside California, no state-level retrofit grant equivalent to Brace + Bolt could be found for North Carolina. A typical retrofit still runs $5,000-$10,000 nationally, about $7,000 for a common single-family job.

Earthquake insurance for a Gibsonville 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 Gibsonville address.

More on how this number was built

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