Flashcards in construction 16 Deck (106)
: A thin wire wrapped around the fiber and coaxial cables to secure them to the strand.
A steel support wire to which the coaxial and fiber optic cables are lashed in aerial installations.
Ultimate Breaking Strength (lb) 3900
1/4 inch strand
Ultimate Breaking Strength (lb) 6900
3/8 inch strand
Attach the lashing wire to the clamp as follows:
Wrap the lashing wire twice around the strand in the same direction as the twist on the strand.
Pass the lashing wire between the washers of the lashing wire clamp without overlapping the wire.
Wrap the wire around the clamp to the post on the opposite side of the clamp and wrap it twice around the post and insert the sharp, dangerous end of the lashing wire into the opening between the two halves of the clamp for technician safety.
A loop intentionally formed in the cable to compensate for expansion and contraction caused by temperature changes.
used to counteract the horizontal component of forces placed on poles by the strand and cable.
guy and anchor
Strand that connects the pole line hardware to the anchor
Buried metal device used to transfer force from the pole to the ground.
A guy wire is
strand that connects the pole line hardware, particularly the guy attachment hardware, to the anchor.
A guy wire guard is
a yellow plastic cover used to protect the guy wire and to make it more visible.
Down guy,Head guy,Terminal guy,Side guy,Pole-to-Stub Guy,Pole-to-Pole Guy,Sidewalk guy,Storm guy
Down guy is the general name for the guy wire and associated hardware on all guys. These guys consist of a length of strand (being strand, the rated breaking strength of the guy is the same as that for the strand) that is attached to pole-line hardware and to an anchor. The anchor is used to transfer the horizontal component of force to the ground via the guy wire. Down guys may also be referred to as anchor guys or simply guys.
A head guy may be used as a terminal guy, or two guys can be used in a location where the strand changes direction. Head guys are also referred to as line guys.
Terminal guys are used at the end of pole lines.
Side guys may be used when the strand changes direction. The side guy is in line with the angle that bisects the strand routing. Careful engineering analysis is done to ensure that the side guy does not cause excessive forces to be placed on the guy, anchor, and associated hardware.
Pole-to-stub guys are used to establish clearance for the guys. Pole-to-stub guys are attached to a stub pole.
A pole-to-pole guy utilizes an in-line pole as an anchor. The pole-to-pole guy may also be called a span guy or an overhead guy. The attachment to the pole being used as an anchor should not be greater than eight feet from the base of the anchor pole.
Sidewalk guys use a horizontal strut to provide overhead clearance when a head guy causes a hazard to traffic beneath the guy. Sidewalk guys are useful when the placement of an anchor is critical. The horizontal strut causes additional forces to be placed on the pole where the strut contacts the pole. The strut, typically a 2 ½ inch galvanized steel pipe, is placed eight feet from the ground beneath the framing hardware.
Storm guys are used when a straight pole line is subjected to extreme sideward forces, typically in the form of wind. There may be two storm guys on a pole, both at a ninety-degree orientation to the pole line. A storm guy may also be referred to as a line guy.
Anchors are used to
transfer the horizontal stresses from the pole to the ground
Screw anchors are directly torqued into the ground with a power anchor driver (anchor cranker), although screw anchors can be installed manually. Minimal ground disturbance results with screw anchors.
Never-creep anchors are designed for use in soft soil where screw anchors are less effective. The never-creep anchor is installed by driving the never-creep anchor rod to intersect a perpendicular borehole used for the placement of the plate of the never-creep anchor. The borehole is then refilled and compacted. They are also called plate-type anchors.
Rock anchors are designed to expand in holes bored in rock or concrete. Rock anchors are also called concrete anchors.
Anchor rods connect the anchor and the guy wire. Anchor rods are also called guy rods.
What happens when connectorization is not done properly?
Signal quality and the overall life of the network can be adversely affected.
The cable can be damaged during the splicing process, and the equipment being connected can be damaged as well.
It can lead to poor picture and signal quality, repeat trouble calls, leakage, and outages.
The device, usually a screw, used to connect the coaxial cable’s center conductor to an active or passive device.
Coring and stripping tools are used to
prepare the coaxial cable for splicing. They vary, depending on the manufacturer and the type of cable being spliced.
used to remove the outer jacket of a typical underground cable
A stripping tool is