A collection of construction videos in reverse chronological order
So why am I posting about yet another concrete-girder bridge? Because the contractor has done a good job of documenting the construction and because the project includes "ground improvement" that I am still trying to understand. [FHWA-project]
The contractor, Ceccanti, bought a MLC300 and Manitowoc helped them assemble the base at JT Marine's yard.
Update: ManitowocCranes wrote an article with this two photos.
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Then they barged the MLC300 base and a Grove crane to the worksite and...
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...added the boom and counterweight stacks to the MLC300 at the worksite. They first used the crane to help improve the ground that will be under the bridge abutment using a ground penetrating vibrator. [FHWA-newsletter] At -0:39 in the following video you can see the crane push its counterweight stack out just before it raises the boom because the boom itself is a load with a long radius when its on the ground. In fact, some cranes need help from the assembly crane to get the boom up.
|Screenshot @ -0:46|
[Dennis DeBruler shared this post to Manitowoc Crane Enthusiasts on June 29, 2019.]
[A view of the penetrating vibrator in action. Note the two hoses. The vibrator obviously uses hydraulic power.]
[They are building the rebar cage that will be installed into a pier shaft.]
[As the comment explains, we don't see the drilling of the pier shafts because they lost the last week of activity.]
June Time Lapse Video "Time-Lapse for the month of June! Some highlights from the month were crews pouring and forming the piers and abutment with concrete as well as setting the first stage of girders."
I did catch a frame showing that they used the MLC300 to help build the far pier as well as the close one and the abutment.
|Screenshot @ -0:42|
|Screenshot @ -0:22|
Ceccanti, Inc shared sixteen photos with the comment:
With the help from @nesscampbellcranerigging we set rest of the girders at River S this week!•Teams combined our Manitowoc 300 ton crane with a Liebherr 600 ton crane to complete most of the job. The last section was done with Ness Campbell's Liebherr and Grove cranes. •The project started on Tuesday the 30th with setting piers 1 to 2 and 2 to 3. Then the crew started at 3:30am on Thursday the 1st to set Piers 3 to 4 which go over the railroad tracks. They had to time the picks between the train schedule! •I think everyone is a bit more relieved now that the girders are done.[The answer to how you set the girders on the long span is to rent a big crane to help you MLC300. It also helps that they can close the road and use the old bridge to move the beams adjacent to the span. Photo 8 shows the MLC300 has its counterweight stack shoved back quite a ways to balance the load of the beam.]
Ceccanti, Inc shared six photos with the comment: "Couple more that didnt post to the last one! Setting the last girder and the finished look with all of them in place!"
Ben Stalvey shared two photos with the comment: "MLC 300 power."
Cranes Today posted two photos with the comment:
Tacoma, Washington-based construction company Ceccanti, Inc has used a Manitowoc Cranes MLC 300 crawler crane for the replacement of an old wooden bridge in Ridgefield, Washington.[In the referenced article, the project manager says that one of the reasons they choose the MLC 300 was because of its maneuverability. Yet for this project they set it up on a bulkhead on the shore and it did all the construction without moving. One thing I learned is that the rebar cages weighed almost as much as the girders.]
Read more here: http://www.cranestodaymagazine.com/…/mlc300-helps-bridge-r…/
A video of setting the girders
A time-lapse video summarizing some of the construction