Slope Indicator
12123 Harbour Reach Dr
Mukilteo, WA, USA 98275
Tel 425-493-6200
Fax 425-493-6250
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Inclinometer Casing
About Inclinometer Casing
Inclinometer casing is a special purpose pipe used in inclinometer
installations. It performs three functions:
- It maintains access for the inclinometer probe, allowing it
to obtain subsurface measurements.
- It controls the orientation of the probe via internal grooves.
- It conforms to movement of the surrounding ground.
When you buy inclinometer casing, important features to consider are: diameter, groove shape, and coupling style.
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Casing Diameter
Movement of the ground causes the casing to deform. Eventually,
the casing is sheared off or pinched closed. When that happens,
the probe can no longer pass through, and no more readings can be
obtained.
In general, larger diameter casing will offer a longer useful life,
because it can accommodate more deformation before access is closed
to the probe.
85 mm / 3.34 inch casing is the largest diameter. It is
suitable for all uses and especially recommended for landslides
and long-term monitoring. It is also appropriate for monitoring
multiple shear zones or very narrow shear zones.
70 mm / 2.75 inch casing is suitable for construction projects.
It can also be used for slope stability monitoring if only a moderate
degree of deformation is expected.
48 mm / 1.9 inch casing is used only deformations are expected
to be very small and are distributed over broad zones. It is generally
not installed in soils. |
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Groove Shape
 The
accuracy of inclinometer measurements is directly influenced by the
quality of the casing grooves. The best grooves provide a regular,
flat surface for the wheels of the probe.
The grooves should be slightly wider than the wheels, to permit
some side to side movement as the probe passes through curves. If
the grooves are too tight, the wheels will climb out of the grooves
and degrade the reading. |
QC Casing
 QC
casing is Slope Indicator's most popular style of casing. It offers
precision grooves, flush self-sealing, joints, and snap-together
convenience.
Casing sections have built-in couplings that snap together. O-rings
ensure that the joint is grout proof. There is no need for solvent
cement or tape.
QC casing is offered in 70 and 85 mm diameters. Accessories include
grout valves, casing anchors, telescoping sections, and splice kits. |
Standard Casing
 This
is Slope Indicator's traditional glue and rivet style of casing.
It features precision grooves and strong, flush joints that provide
superior resistance to twisting and bending.
Casing sections and couplings are glued together, riveted, and
sealed with mastic and tape.
Standard casing is offered in 48, 70, and 85 mm diameters. Accessories
include grout valves, casing anchors, and telescoping sections.
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EPIC Casing
Epic casing is an economical casing that withstands rough handling.
It can be cut and coupled anywhere along its length, so it is easy
to extend and easy to repair. Its strong, oversize couplings provide
superior resistance to twisting and bending.
Casing sections and couplings are glued together, riveted, and
sealed with mastic and tape. The injection molded couplings provide
an interference fit for better sealing.
Epic casing is offered only in 70 mm diameter. Accessories include
grout valves, casing anchors, and simple telescoping couplings.
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CPI Casing
CPI casing features precision grooves, self-sealing couplings,
and rapid assembly. Its oversize, injection-molded couplings can
withstand twisting and bending. CPI casing can be used in weather
that is too cold for snap or glued couplings. It is also suitable
for temporary installations that require repeated assembly and disassembly.
The coupling is pressed onto the casing section and an nylon shear
wire is inserted to lock the joint. An O-ring inside the coupling
makes the joint grout proof.
CPI casing is offered in 48, 70, and 85 mm diameters. Accessories
include grout valves, casing anchors, and telescoping sections.
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Shear Wire Casing
Shear wire casing is a cold-weather alternative to QC casing. It
provides precision grooves, self-sealing flush joints, and rapid
assembly. Shear wire casing can be disassembled, but it is not designed
for repeated disassembly.
Casing sections have integral couplings. Sections are pressed together
and a nylon shear wire is inserted to lock the joint. An O-ring
makes the joint grout proof.
Shear wire casing is offered in 70 and 85 mm diameters. |
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Installation Information
 You
can find installation information and more in our tech notes section.
Some links that might be useful are:
For more information
Please download the data sheet for Inclinometer
Casing. You may also be interested in our QC
casing installation guide .
QC casing was also independently
reviewed.
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