TYPES OF CRANES FOR PRECAST BUILDING CONSTRUCTION

About Crane:

Cranes are used for loading and unloading the precast walls on yard or site. Each precast walls or components are usually large and heavy weight, so cranes are required to lift them. And also, cranes are easily done when set the precast position while erecting on site. It will help to reduce manpower and cost of precast wall lifting and also to reduce construction time delay.

We mainly used two types of cranes on both factory and site.

1. Tower crane (Ref. Fig 01)
2. Mobile crane (Ref. Fig 02)
   
   1. Tower Crane:

• For precast construction the tower cranes are playing major role to handle precast walls in the yard and also during erection on site.
• It’s mainly used for multi storied building construction.
• Tower cranes are inbuilt on site. So, safety, selection, placement, and reliability of tower cranes are very important to completion of Precast buildings on time.
• It is proven to be safe, long lasting and very fast in construction
• The big issue is wind acting on the tower crane. The small collision may lead to big accidents or damage the precast elements and also delay in completion of job. So, while fixing the tower crane we need to fix in proper placement to avoid unwanted damages and waste of cost.
• Tower cranes are fixed on site so it can’t be moved to one place to another.
• Tower crane is used to multi-levels building’s to lifting the panels from ground floor to needed level. But it has limitations to cover wide area.

Fig.01

2. Mobile crane:

• Mobile cranes can be used to lift, carry, and place materials in many applications.
• For tilt-up construction jobs can be completed quickly, accurately, and safely.
• Sometimes mobile cranes are help for tower cranes to rotate and move the precast walls from truck or site.
• It will also help for loading and unloading the precast walls from the truck.
• The wind energy will not affect while lifting precast walls when compared to tower cranes.
• Mobile cranes are movable. So, if we need to move any other places it is easy.
• And it’s used for mainly single-story building construction.
• It is compact in size so it’s can’t occupy more place on site.
• Compare to tower crane we can’t use this crane for multi-levels building. But it’s used to cover the wide range of area on site.

Fig.02