29
Where our duct crosses a carriageway,
adjoining kerbs must be temporarily marked
to note positions.
Openreach duct shall be laid on an outer edge
of the service trench to enable box building. A
draw rope shall be inserted through the duct and
secured to the marker posts at both ends of the
crossing.The appropriate Plug Duct 4B socket
end and 4C Spigot shall be tted.
Duct laid beneath a carriageway crossing must
be 600mm depth from the cover of the nal
surface levels and, for engineering reasons
(National Joint Utilities Group NJUG), separated
from other services laid in parallel by 600mm
(to permit us to install underground joint boxes
without the need for bends).
Carriageway Road Crossings
Footpath Carriageway Footpath
Duct laying
7
How to build a fibre network - version 7.1
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