Fraser's Seismic Design Category, explained

Under the seismic model IBC and ASCE 7 use for new construction, Fraser 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 Fraser sits at the 28th percentile for seismic hazard among 4,875 US cities.

Where Fraser sits in Michigan

The raw figures: peak ground acceleration 0.047g, short-period spectral response 0.094g, 1-second spectral response 0.044g. Among 153 Michigan cities in this dataset, Fraser ranks 77 for seismic hazard, the 50th percentile within the state. About 14,549 people live in Fraser, Michigan.

What a retrofit costs in Fraser

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

Earthquake insurance for a Fraser 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 Fraser address.

More on how this number was built

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