The publication series “Common BIM Requirements 2012” is the result of a broad-based development project entitled COBIM. The need for these requirements arises from the rapidly growing use of building information modeling in the construction industry.

Part 7 describes essential BIM requirements and guidelines for quantity take-off. It is possible for building owners and clients, designers, contractors and product fabricators to utilize quantity take-off in completely new ways and from new perspectives. Measuring quantities manually from drawings is replaced by computer-assisted measurement from a BIM. New competences are required by a quantity surveyor performing BIM-based take-off. Quantity take-off put some requirements for modeling activity. Modeling activity should be done according design discipline requirements, in logical and consistent manner to given level of detail so, that the identification of building elements and building system parts are possible.