Sims Crane Minute - Boom Deflection and Shock Loading


In our Sims Crane Minute videos, Bob Berry frequently reminds us to be mindful of work area hazards and the importance of communication during crane rental operations. Many crane accidents may be avoided simply by paying proper attention to the job site surroundings. In the latest video we want to demonstrate some improper, and very common, ways cranes are frequently mis-used which often results in serious injuries and property damage.

Understanding the boom deflection of a crane and how the crane structure distributes weight is important to lift planning for any competent lift director. When a load is lifted, the potential energy applied to the boom increases. A sudden release of that potential energy may have catastrophic consequences, causing significant damage to the boom of the crane. The boom of a crane is designed to bend, or deflect, when loads are applied, however, a crane boom is only designed to lift a load vertically. Applying a horizontal, or "side-load," to the crane structure will also cause a catastrophic failure.

Have a question for Bob Berry and our Sims Crane safety team? Post them in the feed and we'll feature your question in our Sims Crane Q&A videos!


Our customer stories

Perfect Service Starts Here
  • “Professional, safe , and experienced crane operators. Some of the best I’ve had the pleasure to work with in 40 years of building power lines. On time service, and they go above and beyond to make sure they take care of the customer’s needs from cranes to hauling logistics. Really a pleasure to work with.” 

    - Jim
  • “Sims Crane Atlanta is the best in the business. I have worked with this group for the last 10 years and have always had tremendous success using them. They are highly knowledgeable, top tier equipment, professionalism, pricing, communication, etc. I would highly recommend using them with your next project!” 

    - Brandon
  • “It is always a pleasure working with Sims! Some of the best operators in the business, as well as a very in touch sales team! Highly recommend using them for any crane needs.” 

    - Dylan
  • “The efforts were led with consistent feedback, planning and precise execution day by day, making a difficult task painless and smooth. The install team was very professional, well trained and knowledgeable. They answered any questions we had and ensured a safe and swift installation, faster than anticipated. They were accommodating for last minute field decisions and provided assistance wherever needed. All of the Sims team members have proven to be true construction professionals and thus I will continue to reach out on future projects.” 

    - Landon
Additional Information