Every day to see the site of the tower crane, and increased with the increase of buildings, but it is very strange. By what means, in the process of how to increase Balance Master, please explain.
With a bar of steel, each layer has about 10 or more bars of steel. When the building rises, add a few more bars to the top floor, plus a few layers. It uses the stability principle of the triangle to keep the tower crane from tilting, and it also needs to pull some cables around to keep it balanced, just like a country pole.
It's not a cable, it's a steel bar! Scaffolding
In the table below the tower crane is the upper part of the tower body has four jacks, the top of the cage tower (tower of each section is called a tower cage) a little bigger than the following (which can be installed under a small tower, heightening cage) need to jack up above "high rise to work, just a small tower added into the big cage, the cage towers bolted, or tall tower cage can be fixed.
