Inclinometer Casing

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RST’s Inclinometer Casing is engineered to be assembled quickly and accurately for long and short term monitoring in the most adverse field conditions.

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Overview

RST’s Inclinometer Casing is engineered to be assembled quickly and accurately for long and short term monitoring in the most adverse field conditions. It is suited to be installed in boreholes, embankments, piles, set into concrete or attached to structures.

The casing serves as an access tube to guide a MEMS-based inclinometer probe in the two orthogonal directions of measurement. Changes in the output of the probe caused by the deformation of the casing, is proportional to the sine of the angle of inclination of the long sensor axis from vertical. These displacements are incrementally summed to provide profiles of total displacement versus depth.

Key to quality inclinometer casing is not only the material, but the quality and shape of the grooves. The inclinometer probe utilizes grooves in the casing to control the azimuth of the inclinometer probe.

RST casing is manufactured from non-recycled virgin ABS resin. While more costly than common PVC resin, ABS is preferred due to superior flexibility, stability and low temperature impact resistance. Using recycled resin degrades the performance of casing. All RST casing is machined to ensure the highest quality possible.


Inclinometer Casing Specifications

ITEM 70 MM (2.75 IN.) OD 85 MM (3.34 IN.) OD
Casing OD (including coupling) 70 mm (2.75 in.) 85 mm (3.34 in.)
Casing ID 59 mm (2.32 in.) 73 mm (2.87 in.)
Casing Length 5 or 10 ft. (1.5 or 3 m) 5 or 10 ft. (1.5 or 3 m)
Casing Weight 1.27 kg/m (.85 lbs/ft.) 1.49 kg/m (1.0 lbs/ft.)
Material ABS Plastic ABS Plastic
Groove Spiral ≤ 0.3 deg./10 ft. ≤ 0.3 deg./10 ft.

Glue & Snap Specifications – 70 mm

  • Load Test (738 kg (1630 lbs.))
  • Collapse Test (17.2 bar (250 psi))

 

TELESCOPIC SECTION SPECIFICATIONS

ITEM 70 MM (2.75 IN.) CASING 85 MM (3.34 IN.) CASING
Telescopic Section OD 76.96 mm (3.03 in.) 91.44 mm (3.6 in.)
Compressed Length 457 mm (18 in.) 457 mm (18 in.)
Extended Length 609 mm (24 in.) 609 mm (24 in.)
Range 152 mm (6 in.) 152 mm (6 in.)
Weight 0.77 kg (1.7 lbs.) 0.9 kg (2 lbs.)

Inclinometer casing is commonly used for:

  • Pilings
  • Landslides and slope stability
  • Subsidence control
  • Under large storage tanks
  • Embankment and dam stability
  • Bridge pier, abutments deflection
  • Areas next to large excavations

View illustrations on how inclinometer casing is used for:

Glue & Snap Ordering Info

Glue & Snap provides the speed and convenience of a snap-together flush coupling combined with the low cost and high tensile/high torsional strength of a glue joint. Installation is simply done by applying a bead of glue to the male end, snap casing together and insert down hole.

ITEM 70 MM (2.75 IN.) 85 MM (3.34 IN.)
1.52 m length (5 ft.) ICGC205 ICGC305
1.50 m length (4.92 ft.) ICGC205M ICGC305M
3.05 m length (10 ft.) ICGC210 ICGC310
3 m length (9.84 ft.) ICGC210M ICGC310M
Top Cap ICC2TC ICC3TC
Bottom Cap ICGC2BC ICGC3BC
Casing Anchor ICGC2CA ICGC3CA
Casing Anchor with Grout Cap ICGC2CG ICGC3CG
Grout Cap ICGC2CP ICGC3CP
Repair Coupling ICGC2RC ICGC3RC
Alignment Tool for Coupling IC1002 IC1003
ABS Solvent Cement (1/2 pint) (NOTE: cannot be air shipped) IC1020 IC1020
Female Grout Adapter 3/4” NPT IC1200 IC1200
Telescopic Section ICGC2TS ICGC3TS

 

Snap Seal Ordering Info

Snap Seal is the original O-ring sealed coupling system, which does not require glue, pop rivets, screws, or shear wires. This patented, innovative system allows casing sections to lock together while maintaining precise groove alignment and high collapse strength. The Snap Seal system is flush coupled for ease of installation in hollow stem augers and casing advancers.

ITEM 70 MM (2.75 IN.) 85 MM (3.34 IN.)
1.52 m length (5 ft.) ICSC205 ICSC305
1.50 m length (4.92 ft.) ICSC205M ICSC305M
3.05 m length (10 ft.) ICSC210 ICSC310
3 m length (9.84 ft.) ICSC210M ICSC310M
Top Cap ICC2TC ICC3TC
Bottom Cap ICSC2BC ICSC3BC
Casing Anchor ICSC2CA ICSC3CA
Casing Anchor with Grout Cap ICSC2CG ICSC3CG
Grout Cap ICSC2CP ICSC3CP
Repair Coupling ICSC2RC ICSC3RC
Alignment Tool for Coupling IC1002 IC1003
ABS Solvent Cement (1/2 pint) (NOTE: cannot be air shipped) IC1020 IC1020
Female Grout Adapter 3/4” NPT IC1200 IC1200
Telescopic Section ICSC2TS ICSC3TS


Inclinometer Casing Anchor

The Inclinometer Casing Anchor prevents buoyant uplift of inclinometer casing during installation. It is affixed to the bottom of the inclinometer casing prior to inserting it into the drill-rod/borehole. As soon as the anchor exits the bottom opening of the drill-rod/borehole, the spring loaded arms of the anchor are automatically extended to grip the borehole wall.


Telescopic Section

When vertical heave or settlement is anticipated
to exceed 1-2%, Inclinometer Casing Telescoping Sections must be used to allow axial movement of the casing while minimizing distortion due to vertical strain. Telescopic sections must be inserted appropriately extended or collapsed to accommodate the expected settlement/rebound. Settlement sections are available in 70 mm (2.75 in.) and 85 mm (3.34 in.) and each section can accommodate up to 150 mm (6 in.) of compression or heave.

File Name

Inclinometer Casing

Resource Type

Brochure
Language Version Download
English ICB0001Q
Portugese ICB0081A
Spanish ICB0049B

Speak with an Expert

I’m very happy with the quality of the instrumentation and technical support from RST, as always. They worked with us from the initial stages of the project to ensure that we were fully prepared and equipped to use the RSTAR network for the first time. They delivered everything within the tight project time frame to ensure that there were no delays on site, and the submersible tilt meters looked like new even after over twelve months of being submerged in Thames water!
 
-Richard Lipscombe, BEng (Hons), Director & Principle Consultant - RL Geotechnical Ltd