Auto-computerization of estimation afftairs on civil engineering works gas been developted already in Ministry of Construction, National Railway and so on, and some of them are put to practice use. In Ministry of Transport, practicing with mini-computer is progressed and the development of estimation program gas ever been tried, but there are many problems to practice.
　This report is one of the fundamental researchs for the autocomputerization of estimation affairs in the future and here developted the estimation program for pump dredging works in conformity of Estimation standard of port & habour and airport works.
　In this report the direction and problem of estimation in the future is also examined in the process of programing.
　The estimation standard shows well about the procedure and method of estimation. There is no technical problem on auto-com puterization, but it contain many problems to be reestimated urg ently in the standardization of the table of normal performance and so on.