Role of Revit models in increasing the productivity of AEC professionals Revit models which are created for various disciplines are very important for architects, engineers, contractors and fabricators when it comes to the effective construction of buildings. The 3D models which are created by highly expert teams are largely utilized by key building professionals such as architects, engineers and fabricators etc for showing and accomplishing their outputs. Generally when a building project is carried out, architects play highly important roles as they have to start with the development of architectural design based on which designs for other building trades are developed. Architects are liable for releasing the initial sketches for the building which are utilized by the designers or engineers of other building trades for developing their own design. For example the initial sketches produced by architects are generally sent for the reference of structural engineers and MEP engineers so that they can have some idea about the architectural design of the building and which can help them in developing their own design. So based on the preliminary sketches developed by architects, structural engineers and mechanical, electrical and plumbing engineers, Building Information Models are developed by design and construction professionals in Revit. The entire design development phase is mostly dominated by Revit Architecture, Revit Structure and Revit MEP apart from Navisworks and 3ds Max etc. Highly error-free and immaculate building design is developed by architects, engineers and modelers in Revit, since the software effectively helps in facilitating cooperation between modelers. All the crucial design information can be smoothly passed among the modelers during the design development process in Revit, which reinforces the development of immaculate models. On top of that, clash detection services can also be performed for the sake of identifying design errors. The kind of design errors which cannot be directly identified by design and construction professionals are easily pointed out during clash detection by Clash Detective tool of Navisworks Manage. Design errors pointed out by Clash Detective tool, are properly sorted out by modelers after implementing changes in the design. Since any kind of alterations can be effectively done in BIM models, implementation of changes for resolving clashes becomes too easy for AEC professionals. Last but not least Revit models are highly important for developing high quality buildings.