CommScope Trunk & Distribution Cable - Manual (Page 42)

Underground Installation of CommScope Cable
There are several cable types built specifically for underground installation:
QR/P3 JCASS/MOCJ with Migra-Heal ® flooding compound between the shield and jacket
QR 2J(MA)CASS with twin polyethylene jackets separated by a tough polypropylene tape for extra
resistance to cut-through
P3 CableGuard ® with crush resistant air pockets built in
QR/P3 JACASS/MOCG with twin polyethylene jackets separated by corrugated chrome plated steel armor
ConQuest ® CommScope cable pre-installed in a tough high-density polyethylene conduit for
Cable-in-Conduit direct burial. Please consult our Conduit Applications and Construction
Manual.
The three methods for direct burial are vibratory plowing, trenching and boring.
Vibratory Plowing is the most popular method. A plow with a special blade slices
through the ground. The cable runs through a tube in the blade and is placed as the
plow moves forward. Since no dirt is displaced, vibratory plowing is much less intrusive
than trenching.
Trenching involves digging or plowing a trench, placing the cable in it and then
burying it.
Boring (directional and conventional) digs or punches a hole in the earth, usually from
one trench to another. It is an excellent method for crossing areas that cannot be plowed (such as paved roads or
railroad tracks) if they cannot be traversed aerially. Cable is then pulled through the hole.
CommScope cable may also be pulled through existing underground conduit or ductwork. As with
aerial installation, careful attention must be paid to not exceeding the maximum pulling force or the minimum
bend radius.
QR pulls
through
ducts with
less effort
than any
other
coaxial
cable
5.1 Underground Installation
Overview