Hollidaysburg's Seismic Design Category, explained

Hollidaysburg carries Seismic Design Category A under USGS's ASCE 7-16 model. Lowest seismic design category. Building code requires no seismic-specific detailing here beyond ordinary construction practice. Nationally, Hollidaysburg ranks above 14% of the 4,875 cities in this dataset for seismic hazard - the 14th percentile.

Hollidaysburg by the numbers

USGS's underlying values for Hollidaysburg: 0.045g peak ground acceleration, 0.093g at short period, 0.039g at 1 second. Within Pennsylvania alone, Hollidaysburg ranks 186 of 193 cities by seismic hazard - the 4th percentile in-state. Hollidaysburg has a population of about 5,537.

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 Pennsylvania 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 Pennsylvania.

Earthquake insurance for a Hollidaysburg home

A Hollidaysburg 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 Hollidaysburg's figures come from

Hollidaysburg's Category A 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 A does and doesn't tell you about Hollidaysburg.