Enhancing construction accuracy, productivity, and safety with augmented reality for timber fastening.

Failures in timber construction are predominantly attributed to human errors, which can be mitigated by enhancing process management and control. To reduce human errors in timber connections, an augmented reality (AR)-assisted method for fastening has been developed, targeting enhancements in accuracy, productivity, and construction safety. This method employs markerless inside-out tracking technology combined with an AR user interface to provide real-time visualization of construction data through a head-mounted display, coupled with a near real-time feedback control system. The method was evaluated across multiple case studies, yielding a mean position error of 2.1 mm and an orientation error of 2° in screwing tasks, and 2.7 mm and 3.1° in nailing tasks, complying with standards. These results were validated using paired t -tests. This paper establishes a foundation for the integration of AR-assisted technologies in various timber construction processes, aiming to minimize potential human errors and improve the overall quality of construction work. • AR-assisted method for timber fastening, enhancing accuracy, productivity, and safety. • Feedback control, disabling the tool while error constraints are not satisfied. • Safety system via hand-tracking, enhancing applicability in real-world construction. • Results indicate significant accuracy improvement compared to other methods. • Lays the foundation for AR-assisted technologies to reduce potential human errors. [ABSTRACT FROM AUTHOR]