SPT Calibration Service

SPT hammer calibrations are available at Dando’s factory premises near Littlehampton, West Sussex.

Standard Penetration Test (SPT) is the most frequently used method for measuring the relative density of granular deposits. Tests are carried out by dropping a 63.5kg weight onto a specially designed sample tube. The number of blows required to advance the sample tube every 150mm is then recorded and the data used to calculate a standard penetration resistance or “N-value”.

As the test results are often used to make high-stakes decisions such as foundation and piling placement for construction or civil engineering projects, it is imperative that the SPT testing equipment is properly calibrated to ensure accurate results are produced.

The calibration equipment provides an accurate measurement of the energy imparted to the rods compared to the theoretical energy of the hammer and Dando provide customers with a signed certificate of calibration.

Dando now offer calibration certificates on all new hammers and percussive rigs leaving their factory, as well as offering the calibration service to customers with existing SPT equipment.

To book a test, please contact us on +44 (0)1903 731312 or via the Contact Us page.