Does Norwood, OH need an earthquake retrofit?

Norwood 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 Norwood in the 46th percentile nationally for seismic hazard - higher than 46% of the 4,875 US cities USGS was checked against here.

How Norwood compares

The raw figures: peak ground acceleration 0.071g, short-period spectral response 0.144g, 1-second spectral response 0.076g. Among 254 Ohio cities in this dataset, Norwood ranks 101 for seismic hazard, the 60th percentile within the state. About 19,455 people live in Norwood, Ohio.

Retrofit economics for Norwood

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

More on how this number was built

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