Ground screws by soil type
Soil type is the first selection criterion. Choose yours to see the compatible T-Block® models.
Soft clay
Fine-grained cohesive soil with low consistency
11 optimal
15 good
52 suitable
Stiff clay
Dense, compact clay with good bearing capacity
11 optimal
21 good
54 suitable
Silt
Fine soil with a grain size between clay and sand
11 optimal
23 good
48 suitable
Sand
Loose sand, fine granular soil
11 optimal
17 good
41 suitable
Gravel
Gravel and coarse granular soils
11 optimal
19 good
48 suitable
Peat
Saturated organic soil, wetlands or marshy ground
9 optimal
21 good
19 suitable
Rock
Rocky substrate
Case-by-case technical assessment
Special site conditions
They combine with the soil type: slope, freeze–thaw cycles, seismic zone, or rubble and inclusions in the ground.
Slope / embankment
Steeply sloping ground and embankments
42 optimal
44 good
Frost zone (freeze–thaw cycles)
Areas with freeze–thaw cycles, high altitude
33 optimal
50 good
Seismic zone (NTC 2018)
Areas classified as seismic under NTC 2018
17 optimal
Rubble / inclusions
Ground with aggregates, rubble or made ground
41 optimal
1 suitable