Normally, slim-walled tube samplers and various piston samplers are utilised to collect undisturbed soil specimen. The diameter on the undisturbed soil sample is close to a hundred mm and ranges from 150mm to 200mm for rocks. Resistivity sounding: This process is utilized to study the vertical variations; the electrode program https://griffinhqygr.howeweb.com/32273322/construction-soil-investigation-bd-secrets