Geotechnical surveys are investigations conducted to assess the physical and chemical properties of soil and rock in a specific area. These surveys help engineers and construction professionals understand the ground conditions before starting a project, ensuring safety and stability. Common methods include drilling boreholes, taking soil samples, and conducting tests to evaluate strength and composition. The information gathered from geotechnical surveys is crucial for various projects, such as building foundations, roads, and bridges. By analyzing the data, experts can make informed decisions about design, construction techniques, and potential risks, ultimately leading to successful and safe construction outcomes.