Pulling
Traditionally fibre optic cables were pulled through cable ducts in the same way as other cables, via a winch line. Every time a bend or undulation in the duct is passed the pulling force is multiplied by a friction dependent factor (which can be reduced by using lubricant). This means that the higher the local pulling force is, the higher the friction will be which the cable is experiencing while being pulled against the internal duct wall. This "capstan effect" leads to an exponential force build-up with pull distance, producing generally high pulling forces.
Read more about this topic: Cable Jetting
Famous quotes containing the word pulling:
“Name me, if you can, a better feeling than the one you get when youve half a bottle of Chivas in the bag with a gram of coke up your nose and a teenage lovely pulling off her tube top in the next seat over while youre doing a hundred miles an hour in a suburban side street.”
—P.J. (Patrick Jake)
“The past goes right on pulling me apart, though I can scarcely remember the people or the issues.”
—Mason Cooley (b. 1927)
“The Schofield Kid: It dont seem real, how he aint gonna never breathe again, ever. How hes dead, and the other one, too. All on account of pulling a trigger.
Will Munny: Its a hell of a thing, killing a man. You take away all hes got and all hes ever gonna have.”
—David Webb Peoples, screenwriter. The Schofield Kid (Jaimz Woolvett)