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BIM-SD tool tested in Poland within HISER project

The use of BIM-SD tool developed within HISER project has been tested in Gdynia, Poland. The tool has been applied for including demolition activities that are part of the renovation process for the three storey residential building. Whole experiment was successful, but comparison of waste material generated by the BIM-SD tool and real obtain on the construction site showed the tool need further improvements.

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The building subjected to the renovation was a typical residential two family house constructed in 1961. The building before the renovation had 147 m2 of usable area. External walls were made from full brick and had a thickness of 56cm. The building was partially insulated with expanded polystyrene. External walls were covered with plaster. The reasons for the renovation and related demolition were: very low building condition, the age of the building, low energy performance and the need to rearrange and enlarge the usable area.

First step in the design of retrofitting process was a detailed on site building inspection and inventorying. For this reason laser distance measurer and measuring tape were used. After detailed on site building inspection, 2D building drawings in AutoCAD were created. The building before renovation (but in its actual state) was modeled in Revit LT software in an .ifc format.

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Figure: View of the BIM model from the Revit LT.

Firstly, the initial BIM model that is a basic building representation was developed: the basic BIM model consists of location and dimensions of main building elements and components. The following building entities were developed: walls, slabs, windows, doors, beams, stairs and columns. Thanks to the BIM model, reliable measurement were available in the model. The material inventory was created in the BIM-SD, too.

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Figure: View of the BIM model from the Hiser BIM-SD tool.

Next step was to perform the new building design – after renovation. The comparison of the current building status and the renovation plan resulted in elements and building components that needed to be demolished has been made. During the demolition process the waste was segregated into eight categories. After the comparison of demolition process results it showed up that in general the method for the calculation of the volume and weight should be revised and checked.

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In conclusion of those carrying out experiment, BIM-SD is a very helpful tool for planning and conducting the demolition process. However in order to facilitate the demolition process, apply it to the wide range of residential buildings that need to be subjected to deep renovation and achieve reliable data from the calculations, some improvements were suggested.

All conclusions and recommendations resulting from the Polish demo site were reported to the WP 2 in which BIM-SD too, is being developed.

The project has received funding from the European Union's  Horizon 2020 research and innovation program under grant agreement No 642085.


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