Barr project work offers challenges as well as opportunities for learning and growth
working at Barr

contact information for our corporate headquarters:

Barr Engineering Company
4300 MarketPointe Drive, Suite 200
Minneapolis, MN 55435

Phone: 952-832-2600

Fax: 952-832-2601
Toll free: 800-632-BARR (2277)
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challenging projects

While conducting a geotechnical investigation at the Casselman wind-power project site in Pennsylvania, we discovered mine spoils (loose rocks and soil excavated during coal mining) beneath eight proposed turbine locations. Mine spoils are prone to subsidence and can be geologically erratic, seemingly unsuitable for top-heavy structures like wind-power turbines that need very stable foundations.

Charged with developing an engineering solution to address the risks posed by mine spoils, we developed a wind-turbine foundation design that incorporates 24 micropiles extending through the spoils and anchoring in bedrock 100 feet underground for each foundation.

The Casselman wind-power project is on line, and what was once considered an unusable tract of land is generating enough power for 10,000 homes. We've used similar foundations successfully at other wind-power sites where there are mine spoils.