This model uses agents, which lay and respond to alternative pheromone trails to define circulation routes between specific locations. There is no a priori knowledge embedded in the model. The communication network generated between the colonies represents a routing structure, which is emergent and dynamic. The intended application is for building types that are specifically defined by complex circulation parameters, such as airports, hospitals and schools. Proposed here, is a generative process in which the circulation patterns between specific destinations and the spatial arrangement emerges in a process of mutual compatibility.