Core Concept:  Our use of DSM (design structure matrix) is focused on mapping the building’s product architecture which considers the structuring of a product (system composition) and the interactions between (component relationships).  DSM is a compact visualisation device in which components of a building are mapped against each other.  A mark in a cell indicates that one component is dependent on another. Components can be grouped (rows rearranged) into systems or layers for example and the resulting patterns reveal how tightly bound they are.