Tender for Optical Fibre Cable Protection works in - Northern ...

DGMM-KP/Protective work/Tender-08(II)/2012-13
The A/T report, offset diagrams and M-Book shall constitute the basic records of
ducts to be maintained by the BSNL.
At the time of completion of work, the records of actual depths of cable at which it
is being laid is to be transferred to the Engineer-in-charge along with other
necessary documents and drawing. The record of depth should be given at the
interval of 5 meters.
14) OBSTRUCTIONS:
a) The obstructions generally come in the form of (1) water mains, sewer
pipes or electric cables going across the way of duct, (2) Pillar foundations
or foundation of large buildings near by, (3) Roads in close proximity of the
routes. They have to be overcome before the trench route can be
completed. They may be overcome by giving minor bends to the ducts, in
case it is not possible to go through.
b) Arrangements for negotiating the obstructions should be worked out well in
advance to complete the work in time. The work to be carried out by other
utilities for shifting their plants should be envisaged well in advance.
Simultaneous work saves a lot of time and repeated digging.
64 Signature of Bidder with seal