Magnetic Settlement System

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RST Instruments Magnetic Settlement Systems are available in 3 main configurations which monitor either heave or settlement in soil and rock.

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Overview

RST Instruments Magnetic Settlement Systems are available in 3 main configurations which monitor either heave or settlement in soil and rock.

MAGNETIC SETTLEMENT SYSTEM WITH FLUSH THREADED PVC PIPE:
Installation as a single purpose device to monitor settlement/heave only.

MAGNETIC SETTLEMENT SYSTEM WITH INCLINOMETER CASING:
Installed in conjunction with RST Flush-coupled Inclinometer Casing to obtain both vertical and horizontal deformation data from a single installation. If larger amounts of settlement/heave are anticipated, this configuration may also incorporate a Corrugated Sleeving with Settlement Magnetic Rings which will accommodate RST’s Inclinometer Casing of 70 mm (2.75”) and 85 mm (3.34”) OD sizes.

MAGNETIC SETTLEMENT SYSTEM WITH 1.5” CORRUGATED PIPE:
A more inclusive system which contains pre-installed magnets along a 1.5” ID corrugated pipe. This corrugated configuration is also more ideal for situations where larger amounts of settlement/heave are anticipated.

All 3 configurations listed below use an RST Reed Switch Probe to provide a reading in the magnetic zones allocated along the length of the borehole. Installations are typically vertical, however, horizontal applications may be accommodated utilizing installation rods to insert the probe.All are designed to be simple, accurate, and provide long-term reliability at a low cost.


MAGNET SPECIFICATIONS

For use with PVC pipe or inclinometer casing.

DATUM MAGNETS SPECIFICATION
SSRS00D1 To fit 1 in. flush threaded PVC pipe. Max OD 5.95cm (2.4 in.).
SSRS00D2 To fit RST 70 mm (2.75 in.) Glue & Snap or Snap Seal inclinometer casing.
SSRS00D4 To fit RST 85 mm (3.34 in.) Glue & Snap or Snap Seal inclinometer casing.

 

SPIDER MAGNETS SPECIFICATION
SSMM100 Mechanical release spider target for 1” PVC pipe.
SSMM275 To fit RST 70 mm (2.75 in.) Glue & Snap or Snap Seal inclinometer casing. Max OD 9.92cm (4.0 in.). Borehole size as required.
SSMM334 To fit RST 85 mm (3.34 in.) Glue & Snap or Snap Seal inclinometer casing. Max OD 11.16 cm (4.5 in.). Borehole size as required.

 

PLATE MAGNETS SPECIFICATION
SSRS00P1 To fit 1 in. flush threaded PVC pipe. Dimensions: 30 x 30 cm (12 x 12 in.)
SSRS00P2 To fit RST 70 mm (2.75 in.) Glue & Snap or Snap Seal inclinometer casing. Dimensions: 30 x 30 cm (12 x 12 in.)
SSRS00P3 To fit RST 85 mm (3.34 in.) Standard or Snap Seal inclinometer casing.
Dimensions: 30 x 30 cm (12 x 12 in.)

 

INCLINOMETER CASING: TELESCOPIC SECTION MAGNETS SPECIFICATION
ICGC2TS01 To fit RST 70 mm (2.75 in.) Glue & Snap casing. Max OD 7.25 cm (2.85 in.)
ICSC2TS01 To fit RST 70 mm (2.75 in.) Snap Seal casing. Max OD 7.25 cm (2.85 in.)
ICGC3TS01 To fit RST 85 mm (3.34 in.) Glue & Snap casing. Max OD 8.89 cm (3.50 in.)
ICSC3TS01 To fit RST 85 mm (3.34 in.) Snap Seal casing. Max OD 8.89 cm (3.50 in.)

 

MAGNET + ACCESS PIPES SPECIFICATIONS

For use with 1.5 inch corrugated pipe settlement system.

MAGNETS SPECIFICATION
SS3210 Anchor Assembly (includes Datum Target)
SS3220 Magnetic Target Assembmblyly
SSRS00P2 Plate Magnet: 30 x 30 cm (12 x 12 x 12 i2 in.)

 

SLEEVING AND ACCESS PIPES SPECIFICATION
SS3201 Corrugated pipe/sleeving 38.1 mm (1.5 in) ID
EPA100805 25 mm (1.0 in.) PVC Access Pipe x 5 ft.
EPA100810 25 mm (1.0 in.) PVC Access Pipe x 10 ft.

 

ACCESS PIPES SPECIFICATIONS

For use with PVC pipe or inclinometer casing.

ITEM SPECIFICATION
EPA100805 25 mm (1 in.) PVC X 5 ft.
EPA100810 25 mm (1 in.) PVC X 10 ft.
SSTS100 1” Telescopic Section – 10’ to 7’ ( 3m to 2m) (43mm OD)
ICGC210 2.75 in. Glue & Snap casing X 10 ft.
ICGC205 2.75 in. Glue & Snap casing X 5 ft.
ICTC205 70 mm (2.75 in.) Standard telescopic casing section
ICSC305 3.34 in. Snap Seal casing X 10 ft.
ICSC310 3.34 in. Snap Seal casing X 5 ft.
ICTC310 85 mm (3.34 in.) Snap Seal telescopic casing section
SS3001 Corrugated sleeving 76.2 mm (3.0 in) ID

 

READOUT SPECIFICATIONS

ITEM SPECIFICATION
Resolution 1 mm / 0.01 ft.
Tape Polyethylene coated (Teflon® coated optional) 10mm (0.4 in.) flat style. Stainless-steel conductors.
Probe Two reed switches standard. 16 X 200 mm (5/8 in. OD X 8 in. long)
Reed switch precision ±0.03 to 0.3 mm (±0.001 to 0.01 in.)
System precision Vertical installations typically ±3 to 5 mm (±0.1 to 0.2 in.).
Vertical installations with micrometer head typically ±0.5mm (±0.02 in.).
Battery Standard 9 V

Magnetic Settlement Systems are commonly used for:

  • Monitoring settlement or heave associated with construction, mining, and tunneling.
  • When used around inclinometer casing, deformation in the third axis can be monitored.
  • Subsidence monitoring.
  • Displacement of retaining walls, piers, and abutments.
  • Bottom heave of excavations.
  • Relaxations of rock around tunnel openings.
  • Foundation settlement monitoring.
  • Embankments and fills.

View illustrations on how the Magnetic Settlement Systems are used for tailings dams.

 

File Name

Magnetic Settlement System Reed Switch Probe Instruction Manual

Resource Type

Manual
Language Version Download
English WLM0008A

File Name

Corrugated Pipe with Magnetic Targets Inclinometer Settlement System Installation Manual

Resource Type

Manual
Language Version Download
English SSM0027C

File Name

Magnetic Settlement

Resource Type

Brochure
Language Version Download
English SSB0001P
Portugese SSB0024A
Spanish SSB0014C

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