The most effective method of testing a foundation's condition depends on several factors such as the type of foundation, building structure, and the issues to be investigated. Common methods include visual inspection, soil analysis, level survey, water testing, infrared thermography, and core sampling.
Visual inspection is the simplest method and involves examining the foundation for any visible cracks, while soil analysis determines the type of soil and potential problems such as erosion. The level survey measures the foundation's slope, and water testing detects leaks or structural issues related to water damage.
Infrared thermography reveals hidden defects and core sampling extracts samples of the foundation's material for laboratory analysis. A professional foundation inspector can recommend the most appropriate method based on their expertise for an accurate assessment of the foundation's condition.