? After meticulous preparation, the pour of the heat-duct tunnel walls and the last section of the tunnel roof, happened on Thursday, February 11. 2010.
The concrete was ordered from off-site, also a pump truck with a very long hose to access the lowest section of the forms first.


? Concrete was poured into the sloping form on the west side of the tunnel about half-way up, then the east side about half-way up …


? … then the upper half of the west-side, followed by the upper half of the east side of the tunnel wall forms.


? The pour of both walls are completed and now the last section of the tunnel roof is poured.
Here we see new workshop participant Ikue Saitou helping to finish the surface of the roof slab.

We will continue this report with the removal of the tunnel wall forms.


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