ABSTRACT
Arriving at the correct design for the information system before embarking on its development is very important. Site investigation, tunnel design and construction data are generally existed in forms of manually completed documents, project reports, regional geotechnical maps and geotechnical relational database, etc. And the analysis of these data that located against some form of map or plan is generally two dimensions. ITIS is an integrated D/B management, analysis and visualization system for geotechnical projects especially in tunnelling. It is a true client-web server database system. The client-web server model for distributed computing allows multiple client PCs to request data from a single server PC on which resides a database and the software for servicing client requests. The structure of ITIS is shown in Figure 1.
