the duct as it is paid off the reel. As media is paid off the reel,
lubricate and inspect media for sheath defects. When defects are noticed,
stop pulling operations and notify the Contracting Officer to determine
required corrective action. Stop media pulling if reel binds or does not
pay off freely. Rectify cause of binding before resuming pulling
operations. Provide media lubricants recommended by the cable
manufacturer. Provide 1 meter 3.3 feet of spare media in all manholes and
enclosures for final termination and testing.
3.1.5.1
FO Media Tensions
Install FO media as shown on construction drawings. Provide devices to
monitor media tension during installation. Do not exceed manufacturers
recommended maximum FO tensions and bending radii during installation.
3.1.5.2
Pulling Eyes
Equip media 30 mm 1- 1/4 inchesin diameter and larger with cable
manufacturer's factory installed pulling-in eyes. Provide media with
diameter smaller than 30 mm 1-1/4 inches with heat shrinkable type end caps
or seals on cable ends when using cable pulling grips. Rings to prevent
grip from slipping shall not be beaten into the cable sheath. Use a swivel
grip of19 mm 3/4 inch links between pulling-in eyes or grips and pulling
strand.
3.1.5.3
Installation of Media in Maintenance Manholes, Handholes, and Vaults
Do not install media utilizing the shortest route, but route along those
walls providing the longest route and the maximum spare cable lengths.
Form cables to closely parallel walls, not to interfere with duct
entrances, and support media on brackets and cable insulators at a maximum
of1220 mm 4 feet. In existing maintenance manholes, handholes, and vaults
where new ducts are to be terminated, or where new media are to be
installed, modify the existing installation of media, cable supports, and
grounding as required with cables arranged and supported as specified for
new media.
3.1.6
Aerial Media Installation
**************************************************************************
NOTE: Include tensioning and sag data on drawings
in tabular form.
**************************************************************************
Pole installation shall be as specified in Section 16301N OVERHEAD
TRANSMISSION AND DISTRIBUTION. Where physical obstructions make it
necessary to pull distribution wire along the line from a stationary reel,
use cable stringing blocks to support wire during placing and tensioning
operations. Do not place ladders, cable coils, and other equipment on or
against the distribution wire. Wire shall be sagged in accordance with the
data shown.
3.1.6.1
Aerial FO Media
Keep media ends sealed at all times using cable end caps. Take media from
reel only as it is placed. During placing operations, do not bend in a
radius less than 10 times the outside diameter of media. Place temporary
supports sufficiently close together, and properly tension the media where
necessary, to prevent excessive bending. In those instances where
SECTION 16713N
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