The mat slab was uncovered today and looks solid enough to bear the weight of the world. Now the focus is on building a vertical network of rebar along the wall separating the substation from the trackbed. The rebar comes in a variety of different shapes, which is easier to see in these pictures than in the earlier pictures looking down from above on the preparations for the slab. This stage of the work involves a lot of climbing as the first two pictures pictures show.
The shorter, z-shaped lengths of rebar are transported by crane in what look like gigantic white shopping bags.
A low wall is being constructed on the street-side of the site.
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This blog exists for one purpose: to follow the progress of the CTA substation project. Your comments relevant to that topic are very welcome.