Pile Driving Monitor (PDM)
The PDM (Pile Driving Monitor) was conceived and developed by Dr. Julian Seidel in association with Noptel Oy of Finland. It is based on LED opto-electronic technology. The original concept was to develop a measurement device that could accurately measure pile set and temporary compression by non-contact measurement from a safe distance (10m). This has been achieved, and in addition, it is found that the peak pile velocity can be measured, providing the ability to detect changes in piling hammer performance. The PDM is therefore used to make safe, accurate and reliable measurements of driven pile installation, to improve foundation control and reliability.
What’s more, the PDM can be used on floating barges to make both set and temporary compression measurements, providing a level of control of marine piling never before possible. Vibratory Hammers The use of vibratory hammers is preferred in some geotechnical conditions as a rapid method of pile installation. The PDM provides a unique ability to continuously monitor penetration and penetration rate, vibration frequency and amplitude for installation control.
The PDM is also used as a general structural monitoring tool – to assess the effect of dynamic loads on foundations, such as general traffic or test vehicles on bridge structures, or to assess the movement in rail ballast caused by locomotives and rail stock.
Static Load Tests
The PDM has been successfully used to safely monitor long-term static load tests with a high level of accuracy, and without the need to have people under the test for movement readings, or for reference beams.
FSG operates five PDM units for a wide range of project needs, providing unique abilities and solutions across the Civil Engineering field.
For more information about the Pile Driving Monitor (PDM) visit piledrivingmonitor.com