Catoosa's Seismic Design Category, explained

Under the seismic model IBC and ASCE 7 use for new construction, Catoosa is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Nationally, Catoosa ranks above 37% of the 4,875 cities in this dataset for seismic hazard - the 37th percentile.

Catoosa by the numbers

USGS's underlying values for Catoosa: 0.061g peak ground acceleration, 0.128g at short period, 0.072g at 1 second. Within Oklahoma alone, Catoosa ranks 64 of 75 cities by seismic hazard - the 15th percentile in-state. Catoosa has a population of about 7,497.

Bracing and bolting: the actual cost

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 Oklahoma 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 Oklahoma.

Earthquake insurance for a Catoosa home

A Catoosa 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 Catoosa's figures come from

Catoosa's Category B 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 B does and doesn't tell you about Catoosa.