Randolph Town, MA: what USGS's seismic model says

Under the seismic model IBC and ASCE 7 use for new construction, Randolph Town is Category B. 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 Randolph Town sits at the 60th percentile for seismic hazard among 4,875 US cities.

How Randolph Town compares

The raw figures: peak ground acceleration 0.133g, short-period spectral response 0.232g, 1-second spectral response 0.06g. Among 58 Massachusetts cities in this dataset, Randolph Town ranks 34 for seismic hazard, the 42th percentile within the state. About 35,114 people live in Randolph Town, Massachusetts.

Retrofit economics for Randolph Town

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

Earthquake insurance for a Randolph Town 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 Randolph Town address.

More on how this number was built

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