Developing and Implementing AR for Construction Validation

A COMMON application of augmented reality (AR) in construction is to overlay digital 3D building information modelling (BIM) data onto a real-world environment sing holographic displays, smart glasses and handled devices. While walking through a project on site, engineers and architects can quickly identify discrepancies between a design blueprint and the actual constructed environment. Future physical clashes can easily be identified and corrected, saving time and resources by addressing issues virtually, avoiding costly reworks and field modifications.

On the first stage of the Klang Valley Mass Rapid Transit (KVMRT) project in Malaysia, the MRT Kajang Line, MMC Gamuda used manual documentation such as CAD drawing and paper forms for validation and checking during construction. If any discrepancies were found, a paper validation report would be compiled with photographic evidence and supporting drawings, notes and test results in accordance with client requirements. It was slow and tedious hard-copy paper documentation process to record the changes, defects and issues on site.

For the underground portion of the MRT Putrajaya Line, we decided to digitise this process using BIM , AR and the cloud. Recognising the high cost of using AR-specific devices, such as Microsoft HoloLens, we decided to develop an in-house AR app which could be used on common mobile devices.

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