Inclinometer monitoring

The purpose of inclinometer monitoring is to observe lateral movements within structures or strata and assess whether remedial works are required to subdue any such movements.

Suitability

The technique is suitable for use within casings inserted in grouted boreholes or cast inside concrete piles or slurry walls or fixed to steel H piles and to sheet piling.

Technology

The Geokon Inclinometer readout unit is a portable and rugged instrument for reading inclinometer probes and tiltmeters and for analysing the resultant data. In use, the GK-603 is switched on and the user then enters information concerning the current survey. Data is recorded and stored within the unit for subsequent downloading and report presentation. The Geokon inclinometer probe is used in conjunction with inclinometer casing for the measurement of lateral earth movements such as might occur in instable slopes, dam and roadway embankments or deep excavations. The probe operates inside the inclinometer casing which has grooves at 90 degree spacing designed to engage the wheels of the probe and guide it in a known orientation

Pile preparation

Inclinometer casings are normally tied to the reinforcement cage at locations specified by the client. Alternatively casings can be inserted and grouted within steel ducts. The casings are fixed such that no movement of the casing from the cage can occur. It is preferable to align the casing as vertical as is practical and to align one set of grooves in the direction of any such expected movement.

Data processing and report

The recorded data is processed using the GTILT software supplied by the Mitre Software Corporation. The software is designed for use with a wide range of inclinometer probes and loggers produced by manufacturers around the world. Generally we supply graphs of incremental lateral movement with respect to the initial base readings. Further graphs are available such as cumulative movement, absolute position etc..