21.5.2 Stability

It should be noted that in the majority of cases, the use of a lifting beam instead of long slings will reduce the overall stability of the lift. Particular attention should be paid to the stability of the load when the lifting points are below the centre of gravity. Figure 21.5.2-1  shows the limiting condition for instability. To achieve a stable configuration, the height of the lifting triangle must be increased in relation to the loading triangle; i.e. for stability, ‘A’ must be greater than ‘B’ and ‘D’ must be equal to or greater than ‘C’.