Choosing the right equipment for moving and lifting materials is one of the most important decisions in construction projects. In projects where the height of the building is high or the amount of material moving operations is carried out continuously, the use of tower cranes can play an important role in increasing the speed of project implementation. However, not all projects require the same type of crane, and the difference between a fixed tower crane and a mobile tower crane should be considered based on the project's conditions.
The fixed tower crane is usually used for long-term projects and high-rise buildings, and after being installed in a certain position, it operates in the same place for a considerable period of time. On the other hand, mobile tower cranes or models that can be moved have more flexibility to change the workplace. Land type, structure height, working radius, loading capacity, project duration, workshop space and installation and moving cost are all influential in choosing between these two options. Technical sources also consider the main difference between these two groups in the way of deployment, mobility, working height and conditions of use.
What is a tower crane and what is its use?
Tower crane or tower crane is one of the main equipment for lifting and transferring vertical and horizontal loads in construction projects. This device consists of parts such as base, mast, rotating unit, arrow or main arm, pocket counter, balance weight, carriage and hook. In common models, the main arm is placed at a high height and provides the possibility of transferring the load within a certain range of the working radius.
In choosing a tower crane, only the nominal capacity of the device is not important. The weight of the load, the distance of the load from the center of the mast, the required height, the wind conditions, the type of foundation, the space around the crane and the project schedule must be checked simultaneously. The actual capacity of a tower crane is different in different radii, and for each model, the load diagram of the same device should be taken into account.
What is a fixed tower crane?
Fixed tower crane is a type of tower crane that is used for continuous operations in the same place after being installed in a certain position. This model is usually installed on a suitable foundation or engineered foundation system and is widely used in projects that have a long implementation period.
One of the important features of the fixed tower crane is to create a stable working point for long-term operation. When the installation location is selected based on the project plan, the device can cover a significant part of the workshop area. In tall buildings, it is also possible to increase the height of the mast and connect it to the building structure if needed.
Fixed tower crane is usually suitable for projects where the operation of lifting materials continues on a daily basis and for a long time. In such projects, the initial installation cost and time can be justified against long-term operation.
What is a mobile tower crane?
Mobile tower crane is a type of tower equipment or crane combinations that can change position more than the fixed model. In some models, the movement system is designed on the base or chassis and the device can be moved within the specified range. This feature is very important for projects where the operation location changes frequently.
It should be noted that "mobile tower crane" is not the same concept as "mobile crane". A mobile crane is usually mounted on a wheeled or tracked chassis and is designed for quick deployment and temporary operations, while a mobile tower crane can have a tower structure and use special moving mechanisms. Specialized sources also introduce tower crane and mobile crane as different equipment with various applications.
The difference between fixed and mobile tower cranes in terms of deployment
One of the most important differences between fixed and mobile tower cranes is how they are deployed in the project. The fixed tower crane remains in the same place for continued operation after being installed in a specific location. If a change of location is required, the process of unpacking, moving and re-installing is usually required.
On the contrary, the mobile model is designed to be moved and can change its position in suitable conditions. This feature makes it more flexible for projects with a wide scope of work or operations that require a change of location. Of course, moving should still be done according to the manufacturer's capacity and instructions, ground conditions and safety requirements.
The difference between fixed and mobile tower cranes in terms of working height
Working height is one of the main criteria in choosing a construction crane. The fixed tower crane has an important advantage in high-rise projects, because its mast structure is designed to operate at a high height, and in certain projects, it is possible to increase the height with engineered methods.
For high-rise projects, it is very important to check the free height, the height under the hook, the height of the building and the need for bracing. In some models, as the height of the structure increases, the tower crane mast is connected to the building to provide the required stability.
The difference between fixed and mobile tower cranes in terms of loading capacity
The loading capacity of a tower crane depends on various factors, and it is not possible to consider only one number as the actual capacity of the device in all conditions. As the load moves away from the mast, the loading and torque conditions also change; For this reason, the load diagram of the device in different radii is very important.
The fixed tower crane is suitable for heavy and continuous operations due to its stable installation and the possibility of designing the foundation according to the project. On the other hand, the capacity of the mobile tower crane should be checked along with the ground conditions, the movement system, the installation situation and the manufacturer's instructions.
For this reason, when buying or renting a tower crane, you should not only pay attention to the nominal capacity. Project engineers should check the weight of the maximum load, the distance of the load from the center of the crane and the required height together.
The difference in terms of installation speed
Fixed tower crane requires careful installation, site preparation, assembly of mast and upper components, and technical and safety checks in many projects. This process is more time-consuming than deploying a mobile crane, but it can make sense for long-term projects.
On the other hand, mobile equipment is usually more flexible in initial deployment and can enter the operation cycle with different preparation time after moving to the project site. Actual setup time depends on machine type, site conditions, auxiliary equipment, and assembly schedule. Specialized sources also consider the difference in preparation and deployment time as one of the important factors in choosing between fixed and mobile equipment.
The difference in the space required for the workshop
Workshop space is one of the important factors in choosing a tower crane. The fixed tower crane is usually installed at a certain point and its arm covers a wide working range. This feature in limited urban land can help to better plan the route of materials transfer.
In mobile projects, the path of movement of the device and the condition of the ground must be investigated from the beginning. The existence of obstacles, the slope of the land, the resistance of the bed and the space required for movement can affect the possibility of using a mobile model.
For this reason, before choosing a tower crane, it is necessary to check the location map of the workshop. The location of the mast, the path of movement, the range of rotation of the arm, the place of discharge of materials and the distance from the surrounding structures should be included in the initial design.
The difference is in terms of cost of use
Comparison of fixed and mobile tower crane costs should be done based on the entire project period. The cost does not only include renting or buying the device, and things like transportation, installation, assembly, disassembly, foundation, service, operator, auxiliary equipment, and project downtime can also affect the final cost.
The fixed tower crane may have a higher initial installation cost, but in long-term projects, it can be suitable for a large number of moving operations. On the other hand, mobile equipment can provide more operational flexibility for shorter operations or projects that require repositioning. The economic choice should be made based on the number of lifts, project duration, height, load weight and workshop conditions.
What projects is the fixed tower crane suitable for?
Fixed tower crane is usually used in projects that have features such as the following:
- High-rise buildings
- Multi-storied projects with a long implementation period
- Large construction complexes
- Projects with a large volume of material handling
- Industrial projects requiring continuous lifting operations
- Workshops where the location of the crane installation is known from the beginning
- Projects that require fixed and extensive coverage
In such projects, the correct choice of installation location can have a direct impact on the productivity of the device.
What projects is the mobile tower crane suitable for?
Mobile tower crane or mobile tower equipment can be an option to consider for projects that require flexibility in moving. This type of equipment becomes especially important when operations are performed in several different positions or the duration of using the crane at any point is shorter.
Construction projects with different work fronts, lower height projects or workshops where it is important to change the location of equipment can benefit from mobility. However, the final choice should be made based on the technical specifications of the device and the actual conditions of the project.
The role of working radius in choosing a tower crane
The working radius is one of the most important technical characteristics of a tower crane. A device may have a high capacity, but it cannot lift the same amount of load in the largest working radius. Therefore, when checking a fixed or mobile tower crane, the distance from the farthest loading point to the center of the mast should also be determined.
The main arm of the tower crane determines the range of horizontal transfer of the load, and the carriage can change the position of the load along the arm. This structure allows the device to receive materials from different places and transfer them to the desired location.
The importance of ground conditions in mobile tower cranes
In mobile models, the quality and resistance of the ground surface is particularly important. The movement of the device and maintaining stability during operation should be checked according to the actual conditions of the workshop. Unsuitable terrain, high slope or the presence of obstacles can limit the possibility of moving or safe deployment.
In the fixed model, the design of the foundation and restraint system is very important. The type of soil, the weight of the machine, the work loads, and the applied forces must be taken into consideration in the foundation design. For this reason, tower crane installation should be done by experts and based on technical instructions.
fixed or mobile tower crane; Which one should we choose?
The answer to this question depends on the specifics of the project and one model cannot be considered suitable for all projects. If the project is long-term, high and has a high volume of material moving operations, the fixed tower crane can play an important role in project planning.
If the ability to change location, operational flexibility and deployment in different locations is a priority, the mobile model or other mobile solutions can be considered. The correct choice should be made based on height, load weight, working radius, project duration, workshop space, land conditions and total cost.
In many projects, the combined use of equipment may be useful; For example, a mobile crane can be used in the initial stages to install a tower crane, and after the installation, the tower crane will perform the main operations of the project.
Buying and renting a tower crane from Aseman Crane Company
Choosing a specialized set for buying, selling or renting a tower crane is very important; Because the performance of the crane is not only dependent on the device model, and factors such as technical condition, actual capacity, safety equipment, installation method and after-sales service are also important.
Esman Crane Company operates in the field of equipment related to construction projects and tower cranes and can be considered by contractors and project managers to check different options. At the time of choosing the device, it is better to provide information such as the required height, the maximum load weight, the maximum working radius, the duration of the project and the conditions of the installation site to the experts so that the most suitable option can be checked based on the actual needs of the project.
For construction projects, choosing the device according to the actual need can avoid additional costs caused by inappropriate capacity or wrong placement. Aseman Crane Company can be evaluated in the process of considering suitable options for buying or renting a tower crane, according to the project specifications.
Important points before buying or renting a tower crane
Before deciding to buy or rent a tower crane, several technical issues should be considered:
- Maximum required load weight
- Maximum working radius
- Required height under the hook
- Final height of the building
- Duration of the project
- Conditions and ground resistance
- Space required for installation
- Accessibility of transport and assembly equipment
- Wind conditions and workshop environment
- Technical status of the device
- Service records and Maintenance
- Equipment and safety systems
- Installation and collection cost
- Technical services and support
Examination of these items makes the decision to buy or rent a tower crane based on technical information, not just the initial price of the device.
The importance of safety in using a tower crane
Operations with the tower crane must be carried out according to the manufacturer's instructions, safety requirements and the permitted capacities of the device. The proximity of several cranes, location restrictions, load movement path and environmental conditions are among the things that should be considered in operation planning. Tower crane safety guidelines also emphasize consideration of the type of configuration, operational limitations, and conditions of other nearby cranes.
The operator must know the allowed capacity of the device in the desired radius and avoid moving the load more than the specified capacity. Periodic controls, equipment inspection and proper maintenance are also necessary to reduce the possibility of failure and increase the safety of operations.
Summary of the difference between fixed and mobile tower cranes
Fixed tower crane and mobile tower crane are both designed for load lifting operations, but the way of deployment, the degree of mobility, application and suitable conditions of their use are different. The fixed tower crane is more suitable for long-term projects, high-rise buildings and continuous operations, and mobile models can be considered in projects where flexibility and position change are important.
Finally, choosing a tower crane should not be based on price or nominal capacity alone. Building height, load weight, working radius, project duration, ground conditions, workshop space, installation method and safety requirements should be checked at the same time.
If the goal of the project is to achieve reliable and planned operations in the field of material handling, choosing the right supplier and equipment is very important. Aseman Crane Company can be considered as one of the considered options for buying and renting tower cranes in construction projects. Examining the technical specifications of the device and matching it with the real needs of the project is the first step to choose the right equipment.