Wyandotte's Seismic Design Category, explained

Under the seismic model IBC and ASCE 7 use for new construction, Wyandotte is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. That puts Wyandotte in the 33th percentile nationally for seismic hazard - higher than 33% of the 4,875 US cities USGS was checked against here.

Where Wyandotte sits in Michigan

The raw figures: peak ground acceleration 0.055g, short-period spectral response 0.108g, 1-second spectral response 0.047g. Among 153 Michigan cities in this dataset, Wyandotte ranks 22 for seismic hazard, the 86th percentile within the state. About 24,214 people live in Wyandotte, Michigan.

Bracing and bolting: the actual cost

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 Wyandotte 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 Wyandotte address.

More on how this number was built

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