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Organizing 3D building information models with the help of work breakdown structures to improve the clash detection process

Gijezen, S. (2010) Organizing 3D building information models with the help of work breakdown structures to improve the clash detection process.

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Abstract:Lately, there are more and more experts who advocate the advantages of Building Information Modeling. A 3D Building Information Model (BIM) gives a clearer insight in the composition of the different building systems such as the architectural, structural, and installation system. One of the applications of Building Information Modeling is Clash Detection; the automated detection of clashes to control systems coordination. Conducting a Clash Detection generates a collection of clashes which occur between elements in the 3D BIM. Khanzode et al (2006) claim that using a 3D BIM gives better results in finding relevant clashes after conducting a Clash Detection than comparing and controlling 2D drawings. When BIM coordinators who care for a good system coordination within 3D BIMs conduct a Clash Detection and find relevant clashes before the execution stage they will avoid change order costs and delays. However, BIM coordinators who conduct Clash Detections using 3D BIMs experience problems. Because of complex designs Clash Detections can provide large amounts of clashes. Therefore, filtering out the relevant clashes that cause change orders is a cumbersome process. To filter out clashes BIM coordinators select groups of elements out of the 3D BIMs to clash with each other. However, if 3D BIMs don’t have a clear organization structure it is difficult for BIM coordinators to make useful selections. To make it easier to focus on relevant groups to clash with each other and find relevant clashes I developed a new classification based on the properties of a Work Breakdown Structure. To develop a new classification I used the standard groups of the Dutch NEN 2634 construction classification for cost calculation. To create a better organization structure according to Work Breakdown Structures I assigned to each standard group a responsible participant. After analyses I rearranged these groups according to their responsible participant and composed a schematic WBS. To apply this WBS as classification for organizing 3D BIMs I converted the standard WBS to table format and implemented it in the modeling software. Having installed the new WBS based classification in modeling software such as Revit Architecture modelers will be able to organize the 3D BIM elements based on the new WBS based classification. When BIM coordinators conduct a Clash Detection to clash the different specialty designs with each other using an organized BIM they theoretically should find the relevant clashes more efficient and more accurate. I tested this hypothesis with an experiment based on one project concerning the construction of a new office building.
Item Type:Essay (Master)
BAZ Bouwkundig Adviesbureau Zwolle
Faculty:ET: Engineering Technology
Subject:56 civil engineering
Programme:Civil Engineering and Management MSc (60026)
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