Expansion joints: What are they and how do they work?

An expansion joint system is simply a transition across an expansion joint opening.

In other words, it is a cover, a bridge or an insert. It may be a simple cover plate, engineered system, insert or even a compression seal.

ATC Series

Many systems, however, are engineered to fulfill a variety of additional functions.

• Some of these functions include:

• Fit a predetermined opening size.

• Absorb building movement, thermal or seismic.

• Be compatible with various surface finishes.

Support a given load (floor condition only).

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