Strand jacking system - GIF

[ToolTalkBot]

Strand jacking system.




Previously:

Dangerous car jacking with lumber - photo
Dog predicts car-jacking fail - GIF
Jacking up a truck on a lift fail - GIF
Jacking up a vessel - GIF
Many people jacking up a building - GIF

[nova_robotics]

What on Earth is this? Did they just stack prefabricated floors from the bottom to build that building??? I've never heard of anything like this.

[albertq]

What a strange building system. Clearly didn't take off as a viable method as I've never seen anyone build like this.

[Philip Davies]

Clearly a response to rising sea levels?

[BuffaloJohn]

I had to look this one up. I found this:
"A strand jack is a system similar to a jack, however in this case the load is not pushed up, but the jack pulls up a bundle of wires, which is called a strand."

and this:
"The Enerpac strand jack system provides precise synchronous control in a compact footprint. With lifting load capacities from 17 to 1,405 tons per jack, strand jacks are an ideal heavy lifting solution when a conventional crane is not practical or economical. Up to 60 strand jacks can be simultaneously controlled by a single operator from a central location which optimizes safety."

[astroscuba]

About 1976 a building in my hometown in Wisconsin was built like this. Vertical parts were fabricated then each floor was poured in the basement where basement became the form for the pour. Then the floor was jacked up to the upper level where it was locked in place. The building is still standing after almost 50 years. It's about 6 stories tall. I never came across this method again in 40+ years of work in facilities. It was faster than "normal" methods but there must be some limitation as it never took off in my experience.

[ductape]

May be some type of seawall or levee, as Philip Davies suggested. It looks a heck of a lot more expensive than the usual wall of dirt.

[BuffaloJohn]

May be some type of seawall or levee, as Philip Davies suggested. It looks a heck of a lot more expensive than the usual wall of dirt.

Nova robotics thinks it is a prefab building, I agree. If you look at the "center" shapes, they look like stairwells with doors or perhaps elevator door spaces. Building on the ground is much easier than having to move materials up high...