Soil classification study

[Kiri Robbie]

In the life cycle of deep excavation, where do you position the soil classification study to understand the ground conditions where the water table is?

[Martin Larisch]

The preliminary site investigation and soil classification should be done at concept stage. If required, additional investigation should be carried out for the detailed design. The certification of the pile base is part of the drilling/ construction phase and all three activities should be carried out by geotechnical professionals.

Ground investigations and laboratory testing before the detailed design stage can greatly assist to create savings in the pile design and construction phase.

The knowledge of the groundwater table and it's seasonal variations id important for both, conceptual and detailed design stages.