Patent US 5,755,072

A construction method which includes marking layouts of installation locations directly on the floor of a building under construction. The layouts of the installations are marked directly on the floor of the building under construction by first providing architectural data that defines the architectural layout of a building to be constructed. From this architectural data a set of structural arrangement data is extracted and digitizing in order to allow computer processing the structural arrangement data to produce a digital representation of layouts of installation locations to be placed on the floor of a building at a construction site. This data is then automatedly marked, preferably directly on the floor of the construction site, by a automated robot marking machine or a large scale rendering machine to provide the layouts of installation locations of installation to be placed on the floor of the building at the construction site.