One Earthquake, Two Identical Homes: A True Story

At the same time the 1989 Loma Prieta earthquake brought the San Francisco Super Bowl to a standstill, the Victorian home at right was breaking apart in four sections. A twin house to the left survived intact. The architect who owned both had completed just one seismic retrofit in time. It cost $260,000 to jack up, repair and slide the broken house onto a new foundation. By contrast, the shear walls and anchorage installed in the other saved it from all but $5,000 of minor repairs. Other retrofitted homes in the area also survived with little to no damage.
Bracing and Anchoring

Had the lower walls of this home been braced, it would have stayed upright and habitable. Had the one up top been secured, it wouldn't have slid two feet from its foundation.

Garage Strengthening

With only three walls, garages are structurally weak and may tilt with lateral force. If the story above were to start shaking hard, those bedrooms could land on the driveway.

Tuck Under Parking

We engineer and install steel reinforcement for parking stalls that are support multiple stories. Without these strong columns or frames, the structure is at risk of giving way.

Foundation Work

Major cracks and deterioration aside, concrete foundations rarely need retrofitting. Masonry and rubble foundations are not so reliable. We offer alternatives to replacement.

The three best times to get structural seismic upgrades done are 1) before basement stud walls are drywalled, 2) when the basement is going to be renovated, and 3) before an earthquake strikes.

Safety & Security Films

It's not just for earthquakes. The film that prevents flying shards and exposure to the elements offers immediate benefits: solar protection, enhanced security, more privacy if you choose.

QuakeTrip - Power Off

The #1 cause of fire following earthquakes is the arcing of damaged electrical systems. QuakeTrip senses the initial seismic waves and shuts the breaker down before the quake.

Auto Gas Shut-Off Valve

Have our plumber install an automatic gas shut-off valve at your gas meter. Then, if your gas like snaps it won't catch fire and potentially spread to neighbouring houses as well.

QuakeSecure Your Space

Reliable securing of home and business furnishings, appliances, electronics, computers, pictures, collectibles - anything that could cause injury during a quake.

Risk by Postal Code

This map was created by the Institute
of Catastrophic Damage primarily for
the insurance industry. Bear in mind
that all risk is relative to the size,type
and location of a quake. Moderate
risk in a M9 earthquake may look
like high risk in a M6.5 earthquake.

Occasional Newsletter

Sign up to receive updates on public presentations, emergency preparedness, structural safety and other relevant news.

Quick Contact Form

* indicates required field