Wire Rope Users Manual
WIRE ROPE IDENTIFICATION AND CONSTRUCTION
Wire rope is identified not only by its component parts, but also by its construction, i.e. by
the way the wires have been laid to form strands, and by the way the strands have been
laid around the core.
In Figure 1, drawings “1” and “3” show strands as normally laid into the rope to the right-in
as fashion similar to the threading in a right-hand bolt. Conversely, the “left lay” rope
strands (drawings “2” and “4”) are laid in the opposite direction.
Again in Figure 1, the first two drawings (“1” and “2”) show regular lay ropes. Following
these are the types known as lang lay ropes. Note that the wires in regular lay ropes appear
to line up with the axis of the rope; in lang lay rope the wires form an angle with the axis of
the rope. This difference in appearance is a result of variations in manufacturing
techniques: regular lay ropes are made so that the direction of the wire lay in the strand is
opposite to the direction of the strand lay in the rope; lang lay ropes (“3" and “4”) are made
with both strand lay and rope lay in the same direction. Finally, the type “5” called alternate
lay consists of alternating regular and lang lay strands.
Applicable Standards / Regulations
287REVISED:
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