When should tag lines be used, and what is their purpose?

• A. Tag lines are decorative and used for aesthetics.
• B. Tag lines are used to control load orientation and prevent sway, especially in wind.
• C. Tag lines replace the main lifting gear.
• D. Tag lines measure load weight.

Answer: (B)

Tag lines provide a way to guide and steady a load during crane operations, helping to control how the load stays oriented and to reduce swinging. They give ground personnel a means to influence the load’s path, especially when wind pushes on the load or it would naturally rotate or drift as it is moved and placed. By pulling on these lines from the ground, the team can keep the load square to its intended path and prevent it from contacting nearby obstacles or tipping the wrong way. Tag lines are not decorative nor do they replace the main lifting gear, and they don’t measure weight. They are attached to appropriate points on the load and controlled by trained personnel under clear signals so the operator can coordinate the lift. Use tag lines whenever there’s a risk of sway or misalignment, such as windy conditions or when precise placement is required. Always keep tag lines clear of people and machinery, avoid over-tensioning, and ensure proper communication between the rigger on the ground and the crane operator.