'The Far End'
(eg Customer Premises)
The ‘Far End’ of the blow route is often the customer’s premises. It may be a comms room, a factory basement or a domestic unit.
There is no need to break and splice at any point in front of, or at the boundary of such a building since the fibre unit can be blown right into the building through a connection point.
The fibre can be blown right in, as far as the tube route permits, even to the top floor of a high-rise block*.
In this example, the tube bundle is ‘DI’, installed in a sub-ground duct.
The DI would normally be sealed where it exits the duct, as with any arriving cable.
The DI is flexible enough to be fed into the building, often to a small indoor box.
Once inside the building, any further microduct routing would normally be in LFH (Low Fire Hazard) grade material. The two may be connected together, and fibre can be blown past the microduct change point to the final box.
Some time after blowing, it may be that 'the spare fibre coil' needs to be fed another few metres through an added microduct. This is easy with fibreflow as the friction is so low, the fibre can be pushed a long way by hand, with no blowing equipment necessary.
*Vertical Blowing:
Fibre can be blown either up or down a vertical route for several hundred metres, encompassing even high-rise buildings in the world.
Emtelle's fibreflow installed in this tall bank building in South Africa
Some restraint is generally applied, typically using coils at the top of the vertical, but the fibre itself has very low weight and needs little support during its vertical life. Consult us for details.
