ERICO 3000 ERITECH SYSTEM - Manual (Page 44)

INSTALLATION, OPERATION AND MAINTENANCE MANUAL
42
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On both the U-Bolts and Inline
Couplings, the nuts must not
be tightened to any more than
55kg/cm (45 in.lb).
Additional guying is
required at the top of 4.6 m
(15
1 ⁄
2
ft.) FRP masts (if not
mounted in a cantilevered
fashion). A guying ring is
supplied for guy anchor
points. This is installed
between the ERITECH
®
DYNASPHERE terminal and
the top of the mast, (see
figure 27).
There are two different methods of
coupling two sections of mast:
1. The U-Bolt set, which uses two stainless
steel U-bolts to clamp the two sections
of mast together, (see figure 28).
2. The Inline Coupling is designed to fit
between the upper and lower sections
of the masts and also provides three
guying anchor points, and, a down-
conductor exit point if required. The
maximum mast diameter that the Inline
Coupling is able to clamp onto is 70 mm
(2
7 ⁄
8
in.) OD.
Mast Couplings and Guying
Points
If an aluminum mast and
base are used and can not
be directly attached to the
structural steel work, or are
anchored to a concrete roof,
then they need to be directly
electrically bonded to the
closest structural steel work
or conductive structural point.
Refer to page 20.
Figure 26: Base and mounting dimensions.