sawdust-like material inside the line. The presence of
dirt or other foreign matter indicates possible damage
to the internal structure of the line. In line having a
central core, the core should not break away in small
pieces upon examination. If this occurs, it indicates
that the line has been overloaded. Additionally, a
decrease in line circumference is usually a sure sign
that an excessive strain has been applied to the line.
For a thorough inspection, a line should be
examined at several places. After all, only one weak
spotanywhere in the line-makes the entire line
weak. As a final check if the line appears to be
satisfactory in all aspects, pull out a couple of fibers
from the line and try to break them. Sound fibers show
a strong resistance to breakage.
If an inspection discloses any unsatisfactory
conditions in a line, destroy it or cut it into small pieces
as soon as possible. This precaution will prevent the
possibility of the defective line being used for hoisting
purposes, but save the small pieces for miscellaneous
uses on the jobsite.
Figure 4-6.Whipping a line.
As with manila, nylon line is measured by
circumference. Nylon, as manila, usually comes on a
reel of 600 to 1,200 feet, depending upon the size.
When fiber line is to be stored, certain precautions
must be taken to safeguard the line against
deterioration. A line should never be stored when wet.
Always dry the line well before placing it in storage.
Figure 4-7.Cutting a line between whipping.
The exterior appearance of fiber line is not always
a good indication of its internal condition. Line
softens with use, and dampness, heavy loads, fraying,
breaking or broken strands, and dragging over rough
surfaces all contribute to line weakening and failure.
Also, overloading a line can cause it to part and heavy
damage to material, equipment, and serious injury to
personnel can result. For these reasons, line should be
inspected carefully at regular intervals to determine
whether it is safe for use.
The interior of a line can be checked by untwisting
the strands slightly. Line that is mildewed gives off a
musty odor. Broken strands or yams usually can be
spotted immediately by a trained observer. You will
want to look carefully to ensure there is no dirt or
After being used, a line should be coiled down in
a clockwise direction (assuming it is a right-hand lay).
Should the line be kinked from excessive turns,
remove them by the procedure known as thorough
This is accomplished by coiling the line
down counterclockwise and then pulling the bottom
end of the coil up and out the middle of the coil. If the
line is free of kinks as it leaves the coil, make it up in
the correct manner. If the line is still kinked, repeat
the process before making up the line for storage.
Where you store line deserves careful considera-
tion. Line deteriorates rapidly if exposed to prolonged
dampness; therefore, it is important that the storage
area is dry, unheated, and well-ventilated. To permit
proper air circulation, place the line in loose coils on
a wood grating platform about 6 inches ( 15 cm) above
the floor. You can also hang the line in loose coils on
a wooden peg. Avoid continuous exposure of line to
sunlight because excessive sunlight can damage the