The importance of planning in carrying heavy concrete beams with a crane
- Examination of structural drawings and beam specifications
- Determination of actual weight, length, permitted loading points and center of gravity
- Choosing the appropriate crane and standard accessories
- Determining the path of load movement, crane location and prohibited area
- Estimating timing, manpower and emergency scenarios
Choosing the right crane to carry heavy concrete beams with a crane
The main criteria for choosing a crane
- Capacity in the actual radius: the weight of the beam plus the weight of slings, shackles, hooks and equipment
- Required height: to pass obstacles or installation at a high level
- Maneuvering radius: the distance of the crane to the place of removal and installation
- Ground stability and the possibility of outrigging: preventing settlement and Overturning
- Crane Type: Mobile, Telescopic, Dry Boom, or Heavy Duty Combinations
Knowledge of concrete beam and its effect on carrying heavy concrete beams with crane
- Normal prefabricated beams: sensitive to point impact and buckling
- Prestressed beams: sensitive to hairline cracks and unwanted stresses
- Long beams with initial spring: center of gravity and different dynamic behavior
- T or I-shaped beams: risk of rolling and rolling in rotation When lifting
Lifting equipment and connections in carrying heavy concrete beams with cranes
Common equipment and their use
- Wire sling: suitable for high weights, need edge protection to prevent damage
- Belt sling: to protect the concrete surface, but must be compatible with sufficient capacity and environmental conditions
- Shackle and safe hook: with appropriate safety factor and safe pin
- Earring/lifting insert: in beams Designed for harvesting
- beam spreader: reduce the sling angle and control beam bending
Preparing the workshop for carrying heavy concrete beams with a crane
- Crane and trolley traffic route preparation: removal of obstacles, control of crossing height
- Leveling and reinforcement of the location: preventing outriggers from settling
- Air obstacle control: electric cable, scaffolding, nearby structures
- Creating a safe and secure area: preventing the presence of people Unrelated
- Signalman and Operator Coordination: Standard Signals and Safe Communication
Step-by-step implementation of carrying heavy concrete beams with a crane
1) Final visit and control before the lift
- The apparent health of the beam and the absence of dangerous cracks
- The conformity of the declared weight with the actual conditions
- The health of slings, shackles, hooks and latches
- The readiness of the load movement path and the safety area
4) Controlled displacement
Common risks in carrying heavy concrete beams with a crane and how to reduce them
Overturning or instability of the crane
- Excessive beam or miscalculation of capacity
- Outriggers sitting on loose soil
- Wind or sudden load movement
- Selecting the actual capacity with a margin of confidence
- Appropriate foundation and padding of the outrigger
- Limiting the operation in unfavorable wind conditions
- Closing the sling at the wrong point
- Lack of edge protection and crushed corners
- Additional bending in long poles
Dealing with obstacles and people
The role of the specialized team in the success of carrying heavy concrete beams with a crane
Summary: Carrying heavy concrete beams with a crane with the least risk and the most efficiency
