Information Technology, which is one of global competitive technologies in Korea, was introduced to utilize the production area more efficiently. Chang (2006) has reported a using of a wireless internet environment and PDA system to exchange real time information data between the workers. Shin (2006) has presented a prototype of block tracking system for pre-erection area using of PDA and GPS to chase the location of each block and to exchange the pre-erection work order. Simulation based production scheduling and Product Data Management are also important, which will be dealt within section in more detail. As.
