Crane calculation

Determine the lifting speed and tonnage based on the maximum elevation of your equipment, its quality, lifting height, and control precision.

It is not enough to only consider the quality of the lifting fixture; the location of lifting and the lifting height also play a role.

If it is not a critical piece of equipment or its tonnage is not very high, a judgment can be made based on experience. However, if cost-effectiveness and safety are priorities, detailed calculations are necessary, which require a considerable amount of data

For the quality of the load, the lifting radius, and the lifting height, consult the crane’s performance specifications to select a crane that offers a good cost-performance ratio.

Calculate the lifting load, consult the crane’s characteristic curve to determine the crane

There are dedicated explanations for the course on Construction Engineer Practice, and they are very detailed. The general formula is Q_calculation = K1 * K2 * Q_material ； K1=1.1, K2=1.1~1.25; the load value generally includes the total weight of the item to be lifted and the lifting equipment, and this is a suitable way to make calculations for routine projects.

1. Determine the position of the crane based on the location where the equipment to be lifted will be placed, taking into account the specific conditions at the construction site, thereby determining the crane’s operating radius. 2. Determine the crane arm length based on the installation height of the equipment to be lifted, the dimensions of the equipment, the arrangement of the lifting slings, and the operating radius. 3. Select the crane based on its operating radius and arm length, referring to the performance tables for different types of cranes. 4. Verify the dimensions of the lifting area (calculate the safe distances between the crane arm and the equipment, between the hook and the equipment, as well as between the crane, the equipment, and surrounding facilities). If the requirements are met, it is considered acceptable; otherwise, a new selection is needed. Overall, lifting operations are a systematic endeavor that requires consideration of various factors; the lifting procedure must always be determined based on the actual conditions at the site.

It is recommended that you ask the experienced workers at the factory or consult the crane company.

Span, space, height, the size, shape, and center of gravity of the load – there are many factors to consider

It is also necessary to consider the bearing capacity of the foundation and system verification; thorough planning is the most important preliminary step in lifting large equipment, and it serves as a means to ensure safety during such operations.