Shallotte, NC: what USGS's seismic model says

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

Shallotte by the numbers

The raw figures: peak ground acceleration 0.107g, short-period spectral response 0.206g, 1-second spectral response 0.084g. Among 147 North Carolina cities in this dataset, Shallotte ranks 26 for seismic hazard, the 83th percentile within the state. About 5,161 people live in Shallotte, North Carolina.

Bracing and bolting: the actual cost

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.

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 Shallotte address.

More on how this number was built

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