Oak Grove's Seismic Design Category, explained

Under the seismic model IBC and ASCE 7 use for new construction, Oak Grove 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 Oak Grove sits at the 29th percentile for seismic hazard among 4,875 US cities.

How Oak Grove compares

The raw figures: peak ground acceleration 0.048g, short-period spectral response 0.103g, 1-second spectral response 0.07g. Among 135 Missouri cities in this dataset, Oak Grove ranks 110 for seismic hazard, the 19th percentile within the state. About 9,129 people live in Oak Grove, Missouri.

What a retrofit costs in Oak Grove

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

Earthquake insurance for a Oak Grove 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 Oak Grove address.

More on how this number was built

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