Abstract
In land improvement business plan design criterion "pipeline", it has be made that pressure of water hammer is analyzed numerically with the principle in order to calculate the design water pressure. However, the standard waterhummer analysis program does not exist until now. In the future, it is important to do the maintenance management of pressure of water hammer analysis program of which the reliability is high in the community between engineers of the society level in order to ensure hydrology function of the pipeline system. It is necessary to model various and ancillary facilities for the maintenance management of the waterhummer analysis program. Then, maintenance management method based on object orientation development process was proposed in order to reduce the labor burden of the maintenance management in expanding the code shared in the community. By that method, it is expected that engineers continuously shares the standard program without the masking at the society level.
