Importance of Soil Sample Testing in Projects

I’ve been reviewing some recent projects and can’t stress enough how crucial proper soil sample testing is for foundation design. A project near me had significant issues due to overlooked soil stratification; the foundation settled unacceptably because the soil mechanics analysis was inadequate. Are there specific tools or techniques anyone recommends for more accurate analysis — i’m looking to refine our approach.

‌⁠‍⁠​‍​‍‌⁠‌​​‍​‍​⁠‍‍​‍​‍‌‍‌⁠‌‍​⁠‌‍‌‌‌‍‍‍​‍​‍​‍⁠​​‍​‍‌‍‍⁠​‍​‍​⁠‍‍​‍​‍‌‍⁠‍‌‍‌‌‌⁠‌⁠‌‌⁠⁠‌⁠‌​‌‍⁠⁠‌⁠​​‌‍‍‌‌‍​⁠​‍​‍​‍⁠​​‍​‍‌‍‍‌‌‍‌​​‍​‍​⁠‍‍​‍​‍‌‍⁠‍‌‍‌‌‌⁠‌⁠​‍​‍​‍⁠​​‍​‍‌‍‌​​‍​‍​⁠‍‍​‍​‍​⁠​‍​⁠​​​⁠​‍​⁠‌‍​⁠​​​⁠‌⁠​⁠​‍​⁠​‌​‍​‍​‍⁠​​‍​‍‌‍‍​​‍​‍​⁠‍‍​‍​‍​⁠‍‌‌​‍​‌‌​⁠‌​​‍‌⁠‌‍​⁠​⁠‌‍⁠⁠‌⁠‌⁠‌⁠‌⁠​⁠​‍‌‌‌​‌‍⁠​​⁠‌​‌​​‍​⁠​​‌⁠‌​​‍​‍‌⁠⁠‌​