Spring Lake Park's Seismic Design Category, explained

Under the seismic model IBC and ASCE 7 use for new construction, Spring Lake Park is Category A. Lowest seismic design category. Building code requires no seismic-specific detailing here beyond ordinary construction practice. That puts Spring Lake Park in the 3th percentile nationally for seismic hazard - higher than 3% of the 4,875 US cities USGS was checked against here.

Spring Lake Park by the numbers

The raw figures: peak ground acceleration 0.022g, short-period spectral response 0.048g, 1-second spectral response 0.028g. Among 155 Minnesota cities in this dataset, Spring Lake Park ranks 136 for seismic hazard, the 12th percentile within the state. About 7,083 people live in Spring Lake Park, Minnesota.

What a retrofit costs in Spring Lake Park

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

Earthquake insurance for a Spring Lake Park 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 Spring Lake Park address.

More on how this number was built

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