Saturday, July 29, 2017

Parking Cranes in Weather Vane Mode

One of the local construction sites set up this self erecting tower when they had easy access to the center of the building.

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It is electrically powered and controlled by remote control. So you are renting just a trailer, not a truck, diesel engines, and a cab.
The above photo after it was cropped
Each day the boom would be facing a different direction, so that allows me to get several different angles of the base from the one area where they have not yet built a wall so that construction equipment can drive into the building area.
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This video records the rotation speed. It was getting close to quitting time and they just rotated it over 360 degrees with no load.
(full window)

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The next day was the first time I saw them actually use the crane. Here they are adding posts to the edge of the east wall. Earlier, when they were working on the north wall and I first took pictures of them, they came over and talked to me because I had a camera. I find this common and to my benefit because it gives me a chance to ask questions. The crane was installed mainly to lift the wood panel walls when they get that far into construction. It can lift four tons by the tower and one ton at the tip of the boom. Those posts were certainly less than a ton! I'm glad you can't recognize the faces because inside the fence is supposed to be a hard-hat zone. When I mentioned that every time my wife or I go to the library, we noticed the boom was pointed in a different direction. We thought that was because they had done some work that day and we missed it. He explained it could be because they park it in "weather vane" mode. That is, the boom turns rather than create a lateral force on the tower if there is a crosswind. He said the wires going up the tower will tolerate three revolutions. I confirmed that the reason the turned it at the end of the previous day with no load was to remove the twist from the wires so that it could do a full three revolutions in either direction while it was unattended.

Shawnetta Compton posted
The old girl has been turned. Boom is now facing west.
Steve Postin I thought it was parked facing west.
Shawnetta Compton A wicked storm turned her facing north several years ago. Before my time at wild boar.
Zachary Postin It was but they say tornado or high winds moved it north and apparently they moved it back where its facing west again. I'm going to check it out here in a bit I was just out there 2 weeks ago and it was facing north

[Quite a few comments concern if and who will rebuild it using modern AC equipment.]
In a satellite image, the boom is facing north. You can see the shadow of the cables from the tip of the boom back to were the bucket is still west of the house.

While it was facing north, people could get good side views of it from the road: 1, 2, 3. Casey's Flickr photo has some informative comments.

Murph Dogg made a Lego model of it and provided the comments near the end of his web page:
This is the Squaw Creek 1360w, currently parked at the newly opened Wild Boar Mine near Lynnville, Indiana. The machine has been parked for about 10 years and was completely stripped and gutted by vandals and copper thieves. The machine made news in the mining machine enthusiast circuit this past year when it's idled boom swung about 30-40 degrees in high winds. The machine may see future work again at Wild Boar if the economy improves.

A Facebook photo when it was still working at Squaw Creek Mine. (Choose "Not Now" if you are not a member of Facebook.) I found the source of the Facebook photo.

Carl King posted four photos after it was facing West again with the comment: "Driving around on Sunday and thought these were pretty good pictures of the old Squaw Creek 1360."





They don't seem to be moving the dirt very far in this video. (new window) This must be the other 1360W that was built and shipped to Alberta.

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