SPT & DPSH TESTS
Standard penetration &
Dynamic probe super heavy testing

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SPT & DPSH

SPT is an in-situ dynamic penetration test offering valuable insights into the geotechnical engineering properties of soil. A SPT hammer drives a 51mm Raymond sampler at the bottom of a drive rod to recover soil samples, counting the number of blows over the last 300mm of penetration to give an ‘N value’ (indicating soil strength). DPSH, a continuous dynamic test which records the number of blows per 100mm to give an ‘N-value’, is the other effective testing method we can offer on the spot.