Put a lid on it!

Last summer, crews worked 16 hours a day to excavate the east end site in preparation for the underground parking garage. Fast forward 11 months to early May, when work began to pour the top, or the lid, of the garage.

The work documented here was the project’s largest one-day concrete pour to date:

Construction worker in yellow shirt looks on as concrete is being poured into a large form.

The footprint of the garage is so large that the lid is poured in segments:

large red construction cranes dominate a vast construction site.

The first segment poured nearly 900 cubic yards of concrete, equivalent to pouring over a million Starbucks venti coffees. But, as we advised in The¬†Dirt on the Dirt, don’t drink the concrete!

Construction workers in yellow and orange shirts work atop a rooftop concrete pour with a big red and white truck in the background

Cylinders of concrete are obtained from every 50 cubic yards of concrete poured so compressive-strength tests can be conducted:

construction worker in yellow shirt takes safety samples of concrete.

Substantial manpower was required for each segment poured:

It was a gargantuan effort, but soon the concrete roof will completely disappear from view: At the end of the East End Transformation, the lid of the underground garage will be covered by the landscape of Tisch Park.