Glassboro's Seismic Design Category, explained

Under the seismic model IBC and ASCE 7 use for new construction, Glassboro is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Rank it against the rest of the country and Glassboro sits at the 53th percentile for seismic hazard among 4,875 US cities.

How Glassboro compares

USGS's underlying values for Glassboro: 0.09g peak ground acceleration, 0.164g at short period, 0.045g at 1 second. Within New Jersey alone, Glassboro ranks 177 of 194 cities by seismic hazard - the 9th percentile in-state. Glassboro has a population of about 24,322.

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 New Jersey 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 New Jersey.

Earthquake insurance for a Glassboro home

A Glassboro 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 Glassboro's figures come from

Glassboro'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 Glassboro.