Abstract: This paper presents a case history of the jacking of a new type of large diameter prestressed concrete cylindrical pipe (PCCP). The PCCP was instrumented with soil pressure cell, pore water pressure gauge, slope inclinometers and extensometers to measure the earth pressure changes, excessive pore pressure and horizontal as well as vertical deformation during the pipe jacking. The instrumentation results can be used in the pipe jacking optimization design.

Key words: Prestressed Concrete Cylindrical Pipe, Compaction Effect, Excessive Pore Water Pressure, Effective Stress, Rate of Soil Loss