Cloud based BIM solution for tender estimation regarding mechanical electrical and plumbing (MEP) trades Rajabi, Milad; Bigga, Thomas; Bartl, Mathias A.
Currently, Microsoft Excel is used in many leading construction companies to prepare tenders regarding Mechanical, Electrical and Plumbing (MEP) trades. Normally, 2D drawings with reference to MEP parts are read and the quantities of such articles are taken off manually. The reached quantities are imported into Excel sheets and following, the unit cost per each article is imported as well. Subsequently, the tender regarding MEP equipment is prepared. Obviously, this method is not accurate and transparent. Moreover, when a drawing is updated, the complete process should be repeated. Furthermore, there is a countless number of articles in MEP industry and without an integrated platform, it’s not possible to manage them. Storing such amount of information (local storage) will lead to many operational problems for the used software solutions. So it’s desirable to use cloud based BIM firstly to improve the transparency and accuracy within tender estimation phase and secondly to increase the operation speed of the related software solutions. For this study, a pilot project in cooperation with Max Boegl group, RIB and StabiPlan was implemented. StabiPlan provides a platform to create a 3D model with the exact properties information for most MEP articles. Then the created 3D-model is imported into RIB iTWO to prepare the tender. Moreover, a server is established to store properties information regarding each article. Following iTWO MM (material management) and iTWO TX (tender exchange) modules are going to come into account. They will create an e-platform to transfer sub-tenders between main contractor, subcontractors and wholesalers.
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