Construction 16 Flashcards
A stationary motor-driven or hand-powered machine used for hoisting or hauling, having a drum around which is wound a rope or chain attached to the load being moved
Winch
A cable tail at least in length should be left at the first and last poles and at all splicing locations
3 feet
When two perpendicular strands end at the same pole.
Double dead ended
When the loop location is dictated by the signal flow direction of the feeder cable.
Feeder Dominant
An expansion loop should be formed on what side of every pole for all sizes of coaxial cable being used
Output
The resistance of a circuit (cable, passive devices are examples) to alternating current
Impedance
Although impedance is measured in Ohms, it can’t be measured with the Ohm portion of a
volt-ohm meter
A fiberglass stick used to lift cable blocks and cables into place, utilizing the appropriate type of lay-up stick heads.
Lay-up stick
A ______ is used to measure the pulling tension applied to cables.
dynamometer
allow cables that are being pulled to swivel and are used to ensure that the cables are not over-tensioned during pulling
Breakaway swivels
minimizes drag on the cable in corners and ensures that the minimum bend radius of the cable
90° corner block
used to guide cables from the cable trailer or reel stand to the strand.
Set-up chute
used to lash cable directly to installed strand or cable bundles
cable lasher
the tension in the cable caused by the mass of cable on the reel and reel brakes.
Tail loading
A highly visible tape usually used when burying fiber optic cable, buried directly above the cable to point out the existence of the cable to anyone digging in that location at a depth of 12 inches during the back-fill process.
Warning Tape
This process uses a combination of air pressure and a small drive to push coaxial cable through a conduit
Blowing or Jetting
used in boring of holes for coaxial cable to run thru
Boring Missiles
Comcast strongly recommends a professionally engineered single or double feed tube plow blade with a tube at least ___ larger than the largest cable size and a radius of___ or larger.
1/2 inch and 12 in
Fiber optic cables can be ordered in lengths of up to
8.6 miles
shows streets/boundries/lakes/rivers
Base Map
shows poles,ped,footages
Strand Map
shows HE,Amps, PS, taps
Design Map
Changes made to the design map
As Built Map
Shows only the node
HFC Map
System layout, condensed form
Tree Map
Fiber route
Fiber Map
portable bonding connections installed at the location where the strand is spooled from the cable trailer or reel stand.
Traveling ground
trailer should be at a minimal distance of_____ from the pole at which the strand first contacts the pole line hardware.
(two times the hardware attachment height)
Installation of pole hardware allowing for hanging of strand
Framed
Strand splices should be placed outside the pole framing hardware, but within
18 to 24 inches of the pole.
Uses a mechanical wrenching action to bend expansion loops into coaxial cable prior to lashing or during splicing.
Mechanical bender
The mechanical bender must remain in position until the lasher is transferred and the next span of cable is lashed for _________
50 feet, or 1/3 the distance to the next pole, whichever is greater
place two expansion loops on each pole if
a span is 250 feet or longer
Use a cable block lifter/lay-up stick to place cable blocks on the strand every
30 - 50 feet.
how to attach when two or more cables, all trunk cables, and at street and RR crossing
double lashing
