Working load limit (WLL) for steel wire rope sling
Single leg sling
WLL (ton) = (Fmin x KT) / (Zp x g)
Endless sling (choke)
WLL (ton) = (Fmin x KT x 2 x 0,8) / (Zp x g)
WLL (ton) = (Fmin x KT x KL) / (Zp x g)
Fmin = the minimum breaking force of the rope, in kN.
KT = factor for the efficiency of the termination, for ferrule 0,9 and for spliced 0,8.
KL = the leg factor relating to the number of legs and the angle to the vertical, see table.
Zp = the coefficient of utilization (working coefficient), with the value 5.
g = 9,81