Still, if you must use small stuff, be sure to slack it off
before leaving it overnight. You do this by pulling the
stake up, untwisting the small stuff once, and then
replacing the stake.
Combination Log Picket Holdfast
For heavy loads or in soft- or wet-earth areas, a
combination log picket holdfast is frequently used.
With this type, the guys are anchored to a log or timber
supported against four or six combination picket
holdfasts. (See fig. 6-47.) The timber serves as beam
and must be placed so that it bears evenly against the
front rope of the pickets. Since the holding power of
this setup depends on the strength of the timber and
anchor line, as well as the holdfast, you must use a
timber big enough and an anchor line strong enough
to withstand the pull.
A deadman provides the best form of anchorage
for heavy loads. It consists of a log, a steel beam, a
steel pipe, or a similar object buried in the ground with
the guy connected to it at its center. (See fig. 6-48.)
Because it is buried, the deadman is suitable for use as
a permanent anchorage. When you are installing a
permanent deadman anchorage, it is a good idea to put
a turnbuckle in the guy near the ground to permit
slackening or tightening the guy when necessary.
In digging the hole in which to bury the deadman,
make sure it is deep enough for good bearing on solid
ground. The less earth you disturb in digging, the
better the bearing surface will be. You should undercut
the bank in the direction toward the guy at an angle of
about 15 degrees from the vertical. To increase the
bearing surface, drive stakes into the bank at several
points over the deadman.
A narrow, inclined trench for the guy must be cut
through the bank and should lead to the center of the
deadman. At the outlet of the trench, place a short
beam or logon the ground under the guy. In securing
the guy to the center of the deadman, see that the
standing part (that is, the part on which the pull occurs)
leads from the bottom of the log deadman. Thus, if the
wire rope clips slip under strain, the standing part will
rotate the log in a counterclockwise direction, causing
the log to dig into the trench, rather than roll up and
out. See that the running end
properly to the standing part.
of the guy is secured
Figure 6-47.A combination log picket