Isolation casings stand up to earthquakes

Rebar cages of up to 70 feet in length were installed by up to two cranes.

Pacific Corrugated Pipe Co. delivered corrugated steel pipe sections of up to 66 feet in length to the site.

Two cranes lifted the large-diameter rebar cages and corrugated steel pipe sections used to construct isolation casings that protect State Route 160/Highway 4’s direct connector ramps from seismic activity.

Malcolm Drilling excavates a foundation within a corrugated steel isolation casing.

Rebar cages were assembled and spliced on site.

Workers secure connections on a rebar cage within an isolation casing.

A worker pours concrete into the isolation casing to cast a column.

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