Fiber Optic Network Conduits and Trunking Structuring

Laying of optic communication cables in cable ducts is made using both hand and mechanized methods using standard tools and accessories. It is neccessary to strictly follow the next requirement: pulling force and the bending radius must meet the technical requirements for cabling installations.

Before cable laying in cable ducts wire's of channels continuity check and, if necessary, conduit repairs, as well as repair and retrofit cable wells, should be made. PTA are laid into channels of cable ducting for their most efficient use and the possibility of laying optics in a single channel with copper cables.

Installation in cable ducts is usually done by manual pulling or using hoists. Laying of optical fiber in protective tubes may apply to the method of propulsion.

The cable laying is made in two directions from one of the transit wells (preferably angular), located at about a third of the length of the track on complicated sections of the route or in case of large delivery length of a cable.

Initially, it is expedient to lay a longer cable, then to unwind the remaining cable on the reel, put it in eight-like shape near the well and then lay it in another direction. Delivery lengthes of an optic cable are connected using anadromous or dead-end optical coupling of different design. A particular coupling type is defined on the basis of the accommodation in the well and is indicated in the project documentation.

Trunking

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