Does Smithfield, UT need an earthquake retrofit?

Smithfield carries Seismic Design Category D under USGS's ASCE 7-16 model. High seismic hazard - this is the category most of coastal California, the Pacific Northwest, and other active fault regions fall into. Code mandates significant seismic detailing and restricts irregular structural configurations. This is the category the Brace + Bolt scope (cripple-wall bracing, foundation bolting) is built for. That puts Smithfield in the 89th percentile nationally for seismic hazard - higher than 89% of the 4,875 US cities USGS was checked against here.

Smithfield by the numbers

USGS's underlying values for Smithfield: 0.443g peak ground acceleration, 1.026g at short period, 0.342g at 1 second. Within Utah alone, Smithfield ranks 68 of 95 cities by seismic hazard - the 29th percentile in-state. Smithfield has a population of about 15,018.

What a retrofit costs in Smithfield

A full earthquake retrofit typically runs $5,000-$10,000 nationally (around $7,000 typical), driven mainly by house size and foundation type, not by Utah specifically. California's Earthquake Brace + Bolt grant, which covers a large share of this cost, is a California-only program and does not apply in Utah.

What this means for insurance

A Smithfield homeowner cannot buy a standalone earthquake policy in most cases - it is added to an existing homeowners policy as an endorsement, so the place to start is a regular home-insurance quote.

Where Smithfield's figures come from

Smithfield's Category D and every number above trace to USGS's own ASCE 7-16 Design Maps service - see the methodology guide. See the category explainer for what Category D does and doesn't tell you about Smithfield.