Page 51 - PCCAJournal4thQuarter2011

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PCCA Journal|4
th
Quarter 2011
51
trip-fall hazards.
Lower winch controls allow the operator to set up the
crane without climbing to the crane controls and lower the
load hook and disconnect from stowed position. This reduces
the number of times the operator is required to access and
egress the crane controls and helps avoid slip-trip-fall haz-
ards.
To avoid overhead power line contact, the Altec AC23-95B
is equipped with area protection to allow the operator to
define audible warnings associated with the crane’s range
of motion, reminding them of potential overhead hazards.
The AC23-95B is also equipped with a winch drum rotation
indicator that provides the operator feedback, which helps
the operator place loads that are out of sight.
American Pipe & Plastics
A
MFO is a multi-duct fiber-optic raceway system
manufactured for use in a direct burial or
concrete-encased application. The rigid AMFO
system is factory assembled using the patented
“snap clip,” which allows proper spacing for the flow of
concrete slurry. The snap clip assures accurate alignment of
the duct system for ease of installation. Because the snap clip
can be easily disassembled and reassembled in the field, re-
placing damaged conduits is a simple procedure. The AMFO
duct system is used in open-trench duct bank construction,
providing a multiple raceway system with no dips, undula-
tions, or “snaking” of the conduits. The joint, when properly
cemented, produces a water- and air-tight duct system that
allows for either a pulling or blowing method for fiber optic
cable installation.
The AMFO system is fabricated in quad and hex configura-
tions. The individual AMFO conduits are manufactured to a
Sch40 or SDR21 specification, and the system is available in
1.25-, 1.5-, or 2-inch nominal diameter for the conduits. The
standard configuration is one gray tracker conduit and either
3 (quad system) or 5 (hex system) white conduits. Individual
conduits are manufactured in a 20-foot 3-inch overall length,
which provides a 20-foot laying length and a 3.5-inch long
bell for secure fit. Belled ends are tapered to close tolerances.
Spigot ends are chamfered for easy entry when joining and
cementing. A complete line of sweeps, bends, and couplers
is fabricated to complement the systems. Custom colored
systems are available upon request.
Ditch Witch
W
ith 100,000 pounds of pullback and 12,000
foot/pounds of torque, the JT100 All Ter-
rain is built for extended-range bores and
installations of large-diameter pipe. The
268-hp engine delivers more raw power more efficiently to all
machine functions so the installation can be completed faster.
And with its exclusive, patented two-pipe drilling system, the
JT100 All Terrain can install pipe in most ground formations,
including solid rock.
In HDD applications, rotary bits are driven either by
mechanical rotation of the drill string or by a drilling-fluid-
powered motor, or “mud motor.” The All Terrain system is
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