Enter the load in tons and the radius in meters into the calculator to determine the required boom length for a crane. This calculator helps in planning crane operations by estimating the boom length needed to lift a specific load at a given radius.

Boom Length Formula

The following hypothetical formula is used to calculate the boom length.

BL = R * (1 + L / 10)

Variables:

  • BL is the boom length (meters)
  • L is the load (tons)
  • R is the radius (meters)

To calculate the boom length, multiply the radius by the sum of 1 and the load divided by 10. This formula is a simplified representation and actual calculations should be based on specific crane load charts.

What is Boom Length?

Boom length is the length of the extendable part of a crane that determines how far and how high the crane can lift a load. The required boom length is dependent on the weight of the load and the distance from the crane’s center of rotation (radius). Accurate calculation of boom length is crucial for the safety and efficiency of crane operations.

How to Calculate Boom Length?

The following steps outline how to calculate the Boom Length.


  1. First, determine the load (L) to be lifted by the crane in tons.
  2. Next, determine the radius (R) from the crane’s center of rotation to the load in meters.
  3. Use the hypothetical formula from above = BL = R * (1 + L / 10).
  4. Finally, calculate the Boom Length (BL) in meters.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

Load (L) = 5 tons

Radius (R) = 10 meters