Vibrating wire piezometers usually use to measure pore water pressure in soil. Due to construction activities, pore water pressure may rise certain amount. When that amount reached to a certain limit which existing soil cannot withstand that amount of pressure, kind of failure is likely. This geotechnical instrument can give early warning of impending failure and engineer can decide prevention and most enough design. Apart from the degree of consolidation can be interpret from the trend of decaying excess pore water pressure in soil layer.