Trophy Club's Seismic Design Category, explained

Under the seismic model IBC and ASCE 7 use for new construction, Trophy Club is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Nationally, Trophy Club ranks above 30% of the 4,875 cities in this dataset for seismic hazard - the 30th percentile.

How Trophy Club compares

The raw figures: peak ground acceleration 0.051g, short-period spectral response 0.105g, 1-second spectral response 0.054g. Among 384 Texas cities in this dataset, Trophy Club ranks 83 for seismic hazard, the 79th percentile within the state. About 13,704 people live in Trophy Club, Texas.

What a retrofit costs in Trophy Club

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

What this means for insurance

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 Trophy Club address.

More on how this number was built

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