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Case Study

Tunnel Invert & Annular Fill

Tunnel Invert & Annular Fill

Cematrix
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E.L. Smith WTP Tunnel – August 2007 City of Edmonton, Alberta, Canada Problem: Material was required to support a 1.5 metre diameter water line, and backfill a 3 metre diameter tunnel, 560 metres long, underneath the North Saskatchewan River near the E.L. Smith Water Treatment Plant. Solution: CEMATRIX CMEF-700 engineered fill with a wet cast density of 700 kg/m³ was produced and placed to support the 1.5 metre diameter water line, providing

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