Why should ground conditions be checked before a lift?

• A. Ground conditions are irrelevant if you have a good hoist.
• B. Soft, uneven, or unstable ground can cause settling or tipping; ensure a solid base and cribbing as needed.
• C. Only check ground if there is a fault.
• D. Ground checks are optional.

Answer: (B)

Ground conditions matter because the crane’s weight is transmitted through its outriggers to the ground. Soft, uneven, or unstable ground can deform, settle, or shift under load, causing the setup to become unstable, sink, or tip over. To prevent this, you need a solid base and, when needed, cribbing or other load-distributing measures to create a level, stable platform that will stay put during the lift. Before lifting, assess the ground’s firmness, flatness, slope, and drainage, and address any soft spots, mud, water, or frost with proper base material or cribbing. This approach ensures stability and safety, rather than assuming ground conditions don’t matter, only matter if a fault occurs, or making checks optional.