how a tower crane is erected

When it comes to building tall structures like skyscrapers, a tower crane is indispensable. A tower crane is a large and powerful machine mounted on a tall vertical structure. It is used to lift heavy loads and transport materials during the construction of tall buildings, bridges, and other structures. Erecting a tower crane is a complex process that requires specialized equipment and skilled workers. In this article, we'll take a look at how a tower crane is erected.

Preparation

Before the crane can be erected, a crane foundation must be first laid down. This is normally done several weeks before the crane arrives at the construction site, and is usually a reinforced concrete slab. The foundation must be strong enough to support the weight of the crane, which can be as much as 20 tons. Once the foundation is in place, it's time to start assembling the crane itself.

Assembling the Base

The base of the tower crane is the first and largest section to be assembled. This usually involves using a mobile crane to lift the base section onto the foundation. The base section is very heavy and must be placed precisely on the foundation to ensure stability. Once the base is in place, the anchoring system is fixed to the foundation to hold the base in place.

Attaching the Mast

The next step in erecting a tower crane is to attach the mast section. The mast is the vertical portion of the crane that extends upward from the base. The mast is usually assembled in sections and attached to the base using bolts and pins. The mast is raised to a vertical position using a hydraulic jacking system and is then secured to the base.

Mounting the Jib and Counterweights

With the mast in place, the jib and counterweights can be mounted. The jib is the horizontal arm of the crane that supports the load. It is usually assembled in sections and attached to the mast using bolts and pins. The counterweights are used to balance the crane and prevent it from toppling over. They are assembled and attached to the back of the crane using bolts.

Conclusion

Erecting a tower crane is a significant undertaking and requires careful planning and execution. Each step of the process must be performed with precision and attention to detail to ensure the crane is safe and stable. From laying the foundation to mounting the jib and counterweights, every aspect of the crane must be carefully assembled to create a machine that can lift and transport heavy loads with ease. With a properly erected tower crane, construction workers can continue to build the impressive skyscrapers that define our modern cities.