Rehabilitation structures

Historical Lord Strathcona Elementary School

Lord Strathcona Elementary was founded in 1891 with additions added in the 1910’s through the 1930’s. It is the oldest continuously operating school in British Columbia. TStrathcona School seismic projectoday it is the only elementary school in the East Vancouver area and has legal heritage designation from the City of Vancouver.

Dynamic Isolation Systems (DIS) with Teratec Inc. (Canadian Representative) were awarded the contract as supplier of Seismic Isolation System. The Lord Strathcona Building C was also the first building incorporating DIS isolators in a retrofit using jacking technology in the retrofit.

Upon completion of the seismic upgrade this school will be in compliance with current building code performance requirements.

Slide Bearing retrofit structure
Seismic Lead Rubber Bearing

18 Sliding Isolators were used in Conjunction with LRB’s to Optimize the Performance of the Isolation System.

 12 Seismic Lead Rubber Bearings (LRBs) were used in the Isolation System 

DIS Isolation Bearings were installed first on the underside of the first floor slab, then new foundation piers were installed supporting the flat jacks and bearings.


jacking system for raising foundation

               Close Up of the Jacking System

LRB seismic

Guggenheim Museum

The world-famous Guggenheim Museum in New York City after nearly 50 years of exposure to the elements developed numerous cracks in the walls. Engineering studies indicated that the cracking was caused by a combination of rain and snow exposure, winter freeze and thaw cycles, winter to summer thermal expansion and contractions, plus continuous city street traffic vibrations. A total of 54 dampers are installed in unique radial brace elements at the upper levels of the structure.

Exterior of Solomon R. Guggenheim Museum, the last project of architect Frank Lloyd Wright.

Hermetically sealed dampers were used for the project to allow free thermal motion, but suppress all shock and vibration inputs.

The stainless steel dampers where installed in a region behind the interior walls and ceilings not visible to the public.

Utah State Capitol

From 2004 to 2008, the Utah State Capitol underwent one of the largest historical preservation projects in the United States. In addition to safe-guarding the building against the risk of an earthquake, the project repaired and restored the original beauty and artwork of the Capitol. One of the largest projects during the renovation was the addition of a base isolation system which will allow the building to survive as much as a 7.3 magnitude earthquake. Each year, thousands of people visit the Capitol to witness its modern magnificence and historic significance.

The Utah State Capitol building shown here was retrofitted with 265 DIS isolators

Each custom Seismic Isolator for this project is 20 inches (51 cm) high, and between 36 inches (91 cm) and 44 inches (110 cm) in diameter.

Installing the isolators required excavating the dirt around and beneath the capitol, exposing the foundation and footings.


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