if someone have formula for that, one telescopic crane is lifting and i know about the boom lenght and redius,then how i can calculate the angle,if crane crane angle indicator is not working.thankyou.
You can figure out your angle with the Pythagorean method. Also, you should NEVER operate a crane with any indicator device not functioning. This in violation of OSHA law and many state and local laws. If there is any damage or injury you will be held negligent..
Boy! You really need to get the angle indicator fixed and calibrated! There are ways to estimate, but they are inaccurate and therefore not safe, if you have not got the expierence to do it. Don't use the crane for any load close to your SWL!!! An addition: unless you want to measure your reach, i.e. the distance from the crane pedestool to your load, then you can calculate the angle, but you don't need to anymore as you now know what the distance of your lift is and therefore you can look up the SWL on your chart. Get it fixed.
