Roosevelt's Seismic Design Category, explained

Under the seismic model IBC and ASCE 7 use for new construction, Roosevelt is Category C. 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. Rank it against the rest of the country and Roosevelt sits at the 76th percentile for seismic hazard among 4,875 US cities.

Where Roosevelt sits in Utah

USGS's underlying values for Roosevelt: 0.174g peak ground acceleration, 0.303g at short period, 0.087g at 1 second. Within Utah alone, Roosevelt ranks 92 of 95 cities by seismic hazard - the 3th percentile in-state. Roosevelt has a population of about 7,390.

What a retrofit costs in Roosevelt

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.

Insuring against this, not just retrofitting

A Roosevelt 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 Roosevelt's figures come from

Roosevelt's Category C 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 C does and doesn't tell you about Roosevelt.