Geotechnical Instrumentation

We are committed to provide high quality and reliable geotechnical & structural instrumentation and monitoring results for our clients, especially in times where such monitoring have become an integral part of the construction process. We supply and install the full range of soil deformation, settlement, pressure and water level instruments for geotechnical monitoring purposes. Similarly, we also provide the full range of structural instrumentation to help engineers monitor structural deformation, movement, tilt, vibration, noise, strain and load.

In 2008, we introduced cableless instruments in Singapore varying from EL Tiltsensors to Crackmeters. We have since then been employing the cableless instruments in multiple projects to great success. The cableless instruments have proven to be highly suited for the urban environment in Singapore. The cableless instruments are produced by Soil Instruments Ltd, UK, a leading instrument manufacturer in the world and we are proud to be the official distributor of Soil Instruments Ltd equipment in Singapore.In 2008, we introduced cableless instruments in Singapore varying from EL Tiltsensors to Crackmeters. We have since then been employing the cableless instruments in multiple projects to great success. The cableless instruments have proven to be highly suited for the urban environment in Singapore. The cableless instruments are produced by Soil Instruments Ltd, UK, a leading instrument manufacturer in the world and we are proud to be the official distributor of Soil Instruments Ltd equipment in Singapore.

Inclinometer (Manual System or In Place Inclinometer (IPI))

  • Monitoring slopes and landslides to detect zones of movement and establish whether movement is constant, accelerating, or responding to remedial measures.
  • Monitoring diaphragm walls and sheet piles to check that deflections are within design limits that struts and anchors are performing as expected and that adjacent buildings are not affected by ground movements.
  • Monitoring dams, dam abutments, and upstream slopes for movement during and after impoundment. Monitoring the effects of tunneling operations to ensure that adjacent structures are not damaged by ground movements.

Cable-less Electro-Level Sensor (EL Beam Vertical or Horizontal)

ELs are used to monitor changes in the tilt of a structure. Tilt changes may be caused construction activities, such as excavation, tunneling, and dewatering that affect the ground that supports the structure. Changes in tilt may also result from loading of a structure, such as the loading of a dam during impoundment, the loading of a diaphragm wall during excavation, or the loading of a bridge deck due to wind and traffic.

 

Typical applications include:

  • Monitoring stabilization measures, such as pressure grouting and underpinning.
  • Monitoring structures for the effects of tunneling and excavating.
  • Evaluating the performance of bridges, beams, and dams under load.
  • Monitoring the stability of structures in landslide areas.
  • Monitoring the deflection and deformation of retaining walls.
  • Monitoring convergence and other movements in tunnels.
  • Providing early warning of threatening deformations, allowing time for corrective action to be taken or, if necessary, for safe evacuation of the area.

Piezometer (Pneumatic, Vibrating Wire, Casagrande and Solid-State)

  • Monitoring pore water pressures to determine safe rates of fill or excavation.
  • Monitoring pore water pressures to evaluate slope stability.
  • Monitoring dewatering systems used for excavations.
  • Monitoring ground improvement systems, such as vertical drains and sand drains.
  • Monitoring pore pressures to check the performance of earth-fill dams and embankments.
  • Monitoring pore pressures to check containment systems at landfills and tailings dams.

Water Standpipe

The water level indicator is used to measure water levels in standpipes and wells

Total Pressure Monitoring

Total pressure cells measure the combined pressure of effective stress and pore-water pressure. In general, pressure cells are used to verify design assumptions and to warn of soil pressures in excess of those a structure is designed to withstand.

Typical applications include:

  • Determining the distribution, magnitude, and directions of total stresses in an embankment or in the clay core of a dam.
  • Confirm that tailing material is densifying at design rate.
  • Estimate overburden pressure acting on foundation.
  • Measure contact pressures in abutments and foundations.
  • Measure stress fields in concrete.

Load Cell

Center-hole load cells are designed to measure loads in tiebacks, rock bolts, and cables.

Typical applications include:

  • Proof testing and performance monitoring of tiebacks, rock bolts, and other anchor systems.
  • Monitoring loading of vertical supports in underground openings.

Strain and anchor load Monitoring of Struts

A. Strain Gauges for Steel - Weldable strain gauges measure strain in steel.

Typical applications include:

  • Monitoring stresses in structural members of buildings, bridges, tunnel linings and supports during and after construction.
  • Monitoring the performance of wall anchors and other post-tensioned support systems.
  • Monitoring loads in strutting systems for deep excavations.
  • Measuring strain in tunnel linings and supports.
  • Monitoring areas of concentrated stress in pipelines.
  • Monitoring distribution of load in pile tests

B. Strain Gauges for Concrete - Embedment strain gauges measure strain in concrete.

Typical applications include:

  • Measuring strains in reinforced concrete and mass concrete
  • Measuring curing strains
  • Monitoring for changes in load
  • Measuring strain in tunnel linings and supports

Borehole Extensometer

Borehole extensometers are used to measure movements of soil and rock along the axis of a borehole. A wide range of extensometers is available, each designed for a particular application.

Typical applications include:

  • Monitoring settlement or heave in excavations, foundations, dams, and embankments.
  • Monitoring subsidence above mines, tunnels, and other underground openings.
  • Monitoring convergence in tunnel walls and other underground openings.
  • Monitoring movements in rock slides, walls, and abutments.
  • Monitoring consolidation of soil under embankments and surcharges.
  • Monitoring compression of piles and soil under piles.

Settlement Survey

Monitoring of survey points to keep track of settlement during construction

Spiral Sensor Survey

The spiral sensor is employed to check the twist of inclinometer casings after installation in the ground.

Crack Monitoring

Crackmeters are used to monitor movement at joints and cracks in concrete structures or rock.

Vibration Monitoring

We use the world's frontrunner in vibration monitoring equipment - Instantel - for all our vibration monitoring works.

Noise Level Monitoring

Noise Level Monitoring with Web Based Reports

In House Instrumentation Software

In-House Instrumentation Software of a Bespoke Design that allows Automatic Monitoring and SMS/Email Alerts

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