Users’ Manual
EAN-26MH Horizontal inclinometer system
Page
|
10
2.8
Join the coupling with casing using pop rivets and pop rivet gun supplied with installation
accessories (refer to figure 7 (a),(b)). Riveting shall be done at two diametrically opposite points.
There shall be four rivet joints per coupling. Position of these points is given in the fixed
couplings as shallow holes of around 3 mm dia on its outer surface. To rivet, first drill a hole from
the shallow hole with the help of power drill machine all the way through the access casing
below.
2.9
Put a rivet through (Refer to figure 7 (b)) the drilled hole by inserting the head portion of the rivet
into the hole till its collar rests over the surface of the coupling. Light hammering may be required
to get the rivet firmly seated. Do not hammer at the rivet pin as it may dislodge from the
cylindrical rivet head. Use a small piece of hollow casing with length slightly greater than that of
the pin and having suitable diameter for hammering purpose. Make a secure riveted joint using
the rivet gun.
2.10
Seal joints between fixed coupling and casing with mastic waterproof tape (Refer to figure 7 (c)).
Surfaces where mastic tape has to be applied should be clean. Proper sealing by mastic tape is
necessary to prevent intrusion of concrete sap inside the casing. One round of mastic tape with a
least 10 mm of overlap should be put at each joint between the coupling and the access casing.
Ensure that the mastic tape covers the rivets also. Press the applied mastic tape firmly over the
joint.
2.11
Put at least two rounds of BOPP (Refer to figure 7 (d)) tape firmly over the applied mastic tape.
This will further ensure that the joint remains waterproof.
2.12
Repeat the above procedure for jointing further lengths casing. Ensure the pull cable is passing
through the connected access tubing.
2.13
Figure 8 shows a set of two inclinometer protective caps for the installed inclinometer casing that
are used in place of the standard caps when pull cable are used. The stainless steel pull cable
has to be left inside the inclinometer casing, stretched throughout the casing length. One end cap
has pin that is used to anchor the loops at the ends of the pull cable so that the pull cable can be
easily retrieved out of the casing from either end, whereas another has a threaded connector to
fix the other end of the pull cable.
2.14
One end of pull cable is provided with a loop for fixing to the protective cap (or to the pull cable
reel). See Figure 9 for details.
Figure 8 – Casing end caps
