What it is
A standard hammer is dropped through a fixed height and penetration is recorded after each blow or blow group.
SANAS T1018
Public test guide
Uses repeated hammer blows to measure how easily a cone penetrates the ground or pavement layers.
Plain-language explanation
The project specification controls the exact method and acceptance requirement.
A standard hammer is dropped through a fixed height and penetration is recorded after each blow or blow group.
Dynamic cone penetrometer, hammer, depth scale, recording sheet and location control.
Penetration rate with depth, which indicates changes in material resistance and layer consistency.
Supports pavement investigation, layer identification, compaction checks and comparison of weak and strong zones.
Typical test sequence
Position the instrument vertically
Apply standard hammer blows and record penetration
Plot penetration rate against depth and interpret layer changes
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