Building Information Modelling (BIM) is an object-oriented approach that can virtually create a 3D digital model of a building capable of doing realistic engineering analysis well before the construction begins. BIM offers sophisticated tools for electrical trade design and estimation. This paper primarily investigates with supportive case studies, the potential applications of BIM in electrical system design and analysis. Further, its energy analysis, geographical scale significance and smart built environmental applications are also investigated. This research emphasizes on the deployment of BIM at both static and dynamic level for electrical trade such that BIM electrical system design can be made more attractive and more cost effective. The preliminary investigations indicate that seamless integration of semantic information system of BIM with Geographical Information System (GIS) can be very useful for electrical grid optimization and city energy modelling.

Building Information Modeling (BIM) has established into a powerful solution for our construction requirements throughout its life cycle. Compared to conventional methods, BIM offers simple, faster and accurate methodology for modelling, estimation and analysis. In this paper, a novel Autodesk Revit add-in tool named as “Electrical System Estimation and Costing Tool”(ESECT) is proposed for the simultaneous estimation of electrical connected load, demand load, Volt Ampere per square meter, cost of electrical system construction and monthly bill from a residential building model and the add-in tool is developed by using Visual basic C# language.  Research results indicate that wide range of BIM automated tools are possible for code-checking and estimation for design analysis at all stages of electrical system development and eventually leads to better design and cost reduction.

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