Lift Station #6

In the last month another two sections have been poured and cured and the caisson continues to sink down. In this photo you can see the 21' caisson section about 1/2 way down and the crane using it's clamshell to excavate the center.

Its been a busy week building lift station 6, in these photos you see:

Iron workers forming up the reinforcing steel for the next pour,

concrete trucks pouring into a pump truck while engineers take sample material for testing,

and laborers pouring the second caisson section

Today the site is quiet, as we wait for the concrete to cure. The earlier pour has cured for 1 month and is already beyond it's design strength of 5000 pounds per square inch (psi), most is even over 7000psi. As the new section comes up to strength we'll start sinking the caisson again before getting ready for the next pour.

Thank you to all the partners making the work safe and possible, and the neighborhood for their interest and hospitality.

After digging and shoring a working area about 12-14' below ground, Magney Construction and their workers from Laborers Local 563 and local iron workers formed up, reinforced and poured the 'cutting shoe' for the new Edina lift station 6. Workers from Braun Intertec, Cemstone, and Barr Engineering made sure the concrete was in top form and met the design provided by Wenzel Engineering and Nucor steel.

In this photo you can see the crane taking position near the newly poured concrete 'cutting shoe' structure. The next step will be to 'sink' the structure by excavating out the middle. This part of the works will never be seen again, but will form the base and deepest part of the structure 3 stories down. For more on the caisson method of construction we are using check out the video in the updates on this page.

In the last month we've installed shoring and dug a big hole. At the bottom we've started to install forms.

In the next month we'll be pouring a concrete rectangle with a 'cutting edge' that will create the deepest part of the station. We'll set up a crane and begin excavating the middle of the concrete rectangle to sink the cutting edge.

https://www.youtube.com/watch?v=loEDy-pzE4E

Construction is starting. The Contractor has installed erosion control and security fences and is starting to stage equipment. For your safety, please stay clear of equipment and stay out of the construction area.Thank you.