Abstract
System truss is suitable for various type of large span structures. When an architect designs system truss having a curved surface, the sorts of members and joints vary so greatly. This paper focused on the information flow and product implementation. Production information which is transmitted into the factory, is used to fabricate components which then become unnecessary at the next step. Product information into the site is as well, we examine quantitatively how soft information is transformed into a hard object such as structural element, or structure. Soft information plays a more important role than a hard object in the systematized production process. Computer technologies enable the production of structural components of many sizes in small lots economically and efficiently.
