Flowery Branch's Seismic Design Category, explained

Flowery Branch carries Seismic Design Category C under USGS's ASCE 7-16 model. Moderate seismic hazard. Code adds irregular-building restrictions and requires bracing of some nonstructural components (e.g. tall shelving, water heaters) in addition to structural detailing. That puts Flowery Branch in the 70th percentile nationally for seismic hazard - higher than 70% of the 4,875 US cities USGS was checked against here.

Flowery Branch by the numbers

The raw figures: peak ground acceleration 0.105g, short-period spectral response 0.205g, 1-second spectral response 0.088g. Among 148 Georgia cities in this dataset, Flowery Branch ranks 48 for seismic hazard, the 68th percentile within the state. About 12,292 people live in Flowery Branch, Georgia.

Retrofit economics for Flowery Branch

Outside California, no state-level retrofit grant equivalent to Brace + Bolt could be found for Georgia. 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 Flowery Branch address.

More on how this number was built

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