A geotechnical report is an important input for foundation design. It gives the designer information about soil, groundwater and conditions at the site. The building can then be designed around the actual ground rather than an assumption based on its appearance.
What a geotechnical report explains
Similar-looking sites can contain different layers and behave differently under load. Photographs and experience from a neighbouring parcel cannot replace a suitable site investigation. The required scope must reflect the proposed building.
Bearing resistance, expected settlement and groundwater conditions influence the foundation solution. Fill needs to be distinguished from suitable natural ground. Water information also affects excavation and drainage planning.
Using the findings in design
The structural designer connects the ground information with the loads and structural arrangement. The foundation type and required checks follow from that combination. Read about our structural design process.
A retaining wall also depends on soil and water conditions. The ground behind it and the use of the retained area affect its loading. A wrong assumption can alter the whole solution, including the foundation and drainage.
When to commission the investigation
Agree the information needed before deciding on the foundations. Give the investigation specialist the location, proposed works and available plans. This allows a scope to be defined for the actual site and structure.
The price depends on the investigations, access and complexity. Obtain a quotation for the particular commission. A general figure without this information is not a reliable project budget.
Check conditions when excavation starts
If the exposed ground differs from the assumptions, the findings and design need review. Unexpected water is another reason to contact the responsible specialists. The designer, geotechnical specialist and supervisor should coordinate the response.
The wider design framework is explained by the European Commission’s Eurocode 7 overview. Our retaining wall example shows how these inputs relate to a practical design.
Use the contact form or email info@xplan.si to discuss the information needed for your geotechnical report and project.
