Maaperätilanne

Maaperätilanne refers to the current state and characteristics of the soil at a specific site, including physical, chemical and biological properties that affect land use, construction and environmental risk assessment. The assessment typically covers stratigraphy and depth to bedrock or groundwater, soil texture and structure, moisture content and density, bearing capacity and settlement potential, permeability and shear strength, organic matter content, pH and chemistry, and the presence of contaminants or pollutants.

Assessment and methods involve field investigations such as boreholes, test pits and geophysical surveys, complemented by laboratory analyses of collected samples. Standardized classifications and correlations between field observations and engineering properties are used to create soil maps and design parameters. Seasonal and depth-related variations are considered to obtain a reliable picture of the maaperätilanne.

Importance and applications include informing planning and design of buildings, foundations, excavations and infrastructure, as well as risk assessments for landslides, subsidence, drainage and groundwater flow. It also supports environmental due diligence, remediation planning and regulatory compliance in land-use decisions. In practice, maaperätilanne is used to describe the integrated view of soil conditions at a site for engineering, construction and environmental purposes, particularly within Finnish planning and development processes.