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First concrete poured for tunnel box

FIRST CONCRETE POURED FOR CRL TUNNEL BOX

 

The first concrete has been poured for the CRL tunnel box in Albert Street.

POUR: The CRL construction team pouring the concrete at the bottom of the future rail tunnels

POUR: The CRL construction team pouring the concrete at the bottom of the future rail tunnels

Work started on December 21st 2015. It's taken the workers approximately 501,000 hours to get to this point.

So far, 30,000 cubic metres of soil and rock have been removed and filled up a double trailer-truck 1,866 times.

It’s also required about 8km of utility piping to be moved or suspended above the trench, and the main stormwater line two metres in diameter to be broken out and re-bored approximately ten metres sideways to the east. This is the reason we installed a new 516 metre stormwater pipe from Wellesley to Swanson Streets.

This first concrete pour was in the section beside the Auckland District Court and the Wyndham Street viewing platform at a depth of 18 metres.

The pour took almost 30 cubic metres of concrete pumped through about 56 metres of concrete hose all the way down to the base of the excavation. The job took around four hours from start to finish.

This first concrete pour is the “blinding layer” to form a flat and smooth layer for the next layer above it, which is the waterproofing membrane.

Alain Giauque, Connectus Project Engineer, says: "This is the very first stage of the tunnel box construction and the team did a great job with the preparation works before the pouring and the works during the pour.”

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