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High Density
Counterweights
Perma Ballast® Counterweights
BTI: Experienced, Versatile, Efficient
Charles River Bridge Extension
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Counterweight ballast is an equivalent weight that balances a load.
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Typical uses include elevator counterweight, crane counterweight, bridge counterweight and funfair ride counterweight.
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A well-known example of a bridge counterweighted with Perma Ballast® is the Charles River Bridge Extension - part of Boston's Big Dig project.
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