Quinn Piling provide a wide range of testing services to assess and measure the capacity and performance of piles, anchors and soil-nails. Testing regimes are an integral component in our quality control system to provide reliable geo-technical data for analysis and to verify design parameters are achieved.

The most commonly employed testing options are as follows:

Static Testing

Static testing is the most fundamental form of pile test and is considered the benchmark of a pile's performance. Suitable for all pile types, static testing provides a direct measurement of pile-head displacement in response to a physically applied test-load, either in compression or tension, to a predetermined cycle and duration. The tests can be fully-automated and data is electronically-logged. Results are presented in an easy-to-read graphical format.

Dynamic Testing

Dynamic load testing provides an economic alternative to conventional static load testing. The technique eliminates the requirement for expensive proof-loading.

Integrity Testing

Integrity testing provides a reliable and economical method to determine pile concrete and section uniformity. The testing engineer hits the top of the pile several times with a 'mallet'. The data is then collected for analysis and reporting.

Cross Hole Sonic Logging

Cross Hole Sonic Logging is a non-destructive test used to determine the quality and consistency of concrete bored piles. A highly accurate and reliable testing technique, Cross Hole Sonic Logging provides a full and thorough investigation of defects both along length and by quadrant. Steel tubes of typically 60mm diameter are incorporated into the fabricated reinforced pile cage in pairs or fours. A transmitter and receiver are lowered into opposing tubes at the same time and speed.
The cross hole sonic analyser records, at regular depth intervals, the time that the signal takes to travel from the transmitter to the receiver as well as signal strength. These two parameters indicate the concrete quality between the pair of tubes at a particular depth.

Extensometer Testing

Extensometers can be installed in test piles to provide a more in-depth understanding of the pile performance, under test-loading, at various pre-determined depths.

Anchor Testing

The proper installation of retention systems, whether anchors or soil-nails is only a part of the job. Quinn Piling can provide a full testing service to prove performance in accordance with specifications and design parameters, before stressing and 'locking-off' has been carried out.


Quinn Piling have the capability to carry out a range of monitoring services including inclinometer-monitoring on retaining walls and vibration-monitoring before, during and after piling work.

Vibration Monitoring

In cases where vibration from construction methods could potentially damage sensitive neighbouring buildings and structures, Quinn Piling can install vibration monitors.
Monitoring can take place for the duration of the works, at times specified or for longer periods outside working site hours.
The vibration monitor is equipped with an alarm and flashing beacon. If the level of vibration exceeds the pre-determined limit (typically 5 PPV) the alarm will trigger, alerting the site operations team and stopping the works. Investigation can then take place to determine what activity caused the levels of vibration to exceed the safe limit. Safe-guarding measures can be implemented to permit the work to progress again safely.


Inclinometer-monitoring is commonly employed to provide useful data on the actual performance of retaining wall solutions to observe lateral deflection once the wall is in use and under loadings.

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Quinn Piling Limited is a limited company registered in Northern Ireland. Company Registration No. NI041458
Registered Office: 15 Enterprise Avenue Down Business Park 46 Belfast Road Downpatrick BT30 9UP