Does Lincoln, AL need an earthquake retrofit?

Under the seismic model IBC and ASCE 7 use for new construction, Lincoln 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 Lincoln sits at the 74th percentile for seismic hazard among 4,875 US cities.

Lincoln by the numbers

USGS's underlying values for Lincoln: 0.142g peak ground acceleration, 0.253g at short period, 0.094g at 1 second. Within Alabama alone, Lincoln ranks 51 of 107 cities by seismic hazard - the 53th percentile in-state. Lincoln has a population of about 7,790.

Retrofit economics for Lincoln

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 Alabama 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 Alabama.

Insuring against this, not just retrofitting

A Lincoln 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 Lincoln's figures come from

Lincoln'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 Lincoln.