Evaluation of Microsoft HoloLens Augmented Reality Technology as a construction checking tool

Abstract

Increasing productivity is one of the most important objectives of the construction industry. Building Information Modelling (BIM) was introduced to facilitate collaboration and coordination in the life-cycle of buildings and infrastructures. More often, BIM models are preferred to traditional 2-dimensional drawings to communicate the design to the project stakeholders such as design team, contractors, and the client. Conversely, it is common to use traditional 2-D drawings on-site in the construction phase. Construction mistakes are often the results from errors in the construction drawings or from their misinterpretations. Over the last years, augmented and virtual reality has been introduced in the architecture, engineering and construction industry (AEC) as visualization and collaboration tools. This paper aims to evaluate Augmented Reality (AR), in particular, Microsoft HoloLens, as a construction checking tool. The paper compares different construction checking tools such as the traditional tape and measure, Trimble SX10 laser scanner and the Microsoft HoloLens using Trimble Connect as BIM software, to the Trimble SX10 Total Station, a current industry leader in surveying technology. Comparisons were based on accuracy, speed of testing, ease of use and efficiency. Testing was undertaken by comparing benchmark virtual models of the testing rooms, obtained from an initial survey, and the actual physical rooms. Results indicated that, overall, the HoloLens was the most efficient construction checking tool within a 15 mm to 50 mm accuracy range. It was not as accurate as a laser scanner or tape measure, which indicates further improvements are required before this technology can be recommended as a general construction checking tool.