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Controlling Loads with Taglines Summary Taglines are used to oppose uncontrolled rotation of a load; alter the rotation of a suspended load; assist in controlling swinging; and avoid the need for workers to control the load with their hands. They are not intended to pull a load out of its natural suspended line; hold a load against wind forces; or help support a load. The following information is excerpted from an Industrial Training International webinar with J. Keith Anderson and Monty Chisolm of Bechtel, and appeared as an article called “A Tagline is Critical to Controlling a Suspended Load” in Crane & Rigging Hot Line, May 2015. Register to watch the free webinar: The Bechtel Take on Taglines and Load Control Best Practices Limit the amplitude of a swinging load with the use of taglines. Avoid placing hands directly on a load. Length of tagline is determined by type of control required. Assuming 45° angle from load to handler, the tagline should be at least 1.5 times the height plus six feet. Attach taglines to a structural member capable of taking significant force without being damaged. Do not attach taglines to rigging supporting the load. Tagline rope should be laid across the palm of one hand and firmly gripped. If the line is to be pulled in or let out, do so hand over hand. Never wrap the line around a body part. Never wrap the line around a beam, column, or rail. Pull is most effective when the tagline is nearly horizontal. Taglines should be attached to the load toward its lateral extremes to get best purchase against rotation. Don’t lift light loads with large sail areas in high winds. If wind catches the load, try to turn the load to present the smallest area to the wind. If handler must move with the load, make sure there is a clear path. Establish a clearly defined escape route. "The moment arm is the horizontal distance perpendicular from the point of rotation to the line of pull. The aim is to make the moment arm as great as possible to give the pull the maximum turning effect about the crane hook. Imagine a line from the crane hook to the attachment point…pull is most effective if it makes a 90 degree angle to that line with the tagline near horizontal."
Controlling Loads with Taglines
Summary Taglines are used to oppose uncontrolled rotation of a load; alter the rotation of a suspended load; assist in controlling swinging; and avoid the need for workers to control the load with their hands. They are not intended to pull a load out of its natural suspended line; hold a load against wind forces; or help support a load. The following information is excerpted from an Industrial Training International webinar with J. Keith Anderson and Monty Chisolm of Bechtel, and appeared as an article called “A Tagline is Critical to Controlling a Suspended Load” in Crane & Rigging Hot Line, May 2015. Register to watch the free webinar: The Bechtel Take on Taglines and Load Control Best Practices Limit the amplitude of a swinging load with the use of taglines. Avoid placing hands directly on a load. Length of tagline is determined by type of control required. Assuming 45° angle from load to handler, the tagline should be at least 1.5 times the height plus six feet. Attach taglines to a structural member capable of taking significant force without being damaged. Do not attach taglines to rigging supporting the load. Tagline rope should be laid across the palm of one hand and firmly gripped. If the line is to be pulled in or let out, do so hand over hand. Never wrap the line around a body part. Never wrap the line around a beam, column, or rail. Pull is most effective when the tagline is nearly horizontal. Taglines should be attached to the load toward its lateral extremes to get best purchase against rotation. Don’t lift light loads with large sail areas in high winds. If wind catches the load, try to turn the load to present the smallest area to the wind. If handler must move with the load, make sure there is a clear path. Establish a clearly defined escape route.
"The moment arm is the horizontal distance perpendicular from the point of rotation to the line of pull. The aim is to make the moment arm as great as possible to give the pull the maximum turning effect about the crane hook. Imagine a line from the crane hook to the attachment point…pull is most effective if it makes a 90 degree angle to that line with the tagline near horizontal."