In addition, it should not be led round a bollard or drum of a diameter less than 4 times the circumference of the rope; and if it has to run through a block the diameter of the sheave should be at least 6 times the circumference of the rope.
Ekongezeni, akufunekanga ithunyelwe kujikelezo lwentsika okanye igubu lwe dayimitha engaphantsi kwesine sesazinge lwentambo, kwaye ukuba ubaleko phakathi kovingco lwe dayimitha lwenqulu ingakwi sithandathu esiphindiweyo sesizange lwentambo.