Life cycle modeling of buildings. Life cycle impact assessement and building specification

The decision to take the building as built as the pivot of product modelling, means that the description of a building has to be process based (building process, operation process) and object based (construction elements). The link to existing catalogues of building specifications as a basis for process description and to existing cost and simple energy calculations is presented and discussed. Keywords: Building specifications, catalogues, database model, ecological impact, life cycle analysi