Info hub was defined as a space where information is exchanged in a spontaneus manner as a site effect of human interactions. Environmental demands for such an interactions were core problem to be solve in the design. Complex informational model containing relation between environmental data ( environmental analysis software and physical observation ), program demands and side tectonic was develope as a base for agent base simulation. Agents moving around the site left traces of their behavior affected by the model. This so called “patch traces” were informative base for the design.