Central Falls, RI: what USGS's seismic model says

Central Falls 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. That puts Central Falls in the 58th percentile nationally for seismic hazard - higher than 58% of the 4,875 US cities USGS was checked against here.

Central Falls by the numbers

The raw figures: peak ground acceleration 0.111g, short-period spectral response 0.201g, 1-second spectral response 0.056g. Among 8 Rhode Island cities in this dataset, Central Falls ranks 3 for seismic hazard, the 71th percentile within the state. About 23,034 people live in Central Falls, Rhode Island.

Retrofit economics for Central Falls

Outside California, no state-level retrofit grant equivalent to Brace + Bolt could be found for Rhode Island. 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 Central Falls address.

More on how this number was built

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