“…The capability to visualize modeled construction operations in 3D can be of substantial help in describing the intricacies of simulation models and in obtaining valuable insight into the subtleties of construction operations that are otherwise nonquantifiable and unpresentable. By communicating the logic and the inner working in a comprehensible manner, 3D visualization can facilitate the validation and verification of complex simulation models, thus providing an opportunity to convince all parties involved that models indeed reflect reality (Biles and Wilson, 1987;Cox, 1988;Robinson, 1997;Tucker et al, 1998;Henriksen, 1999;Jain, 1999;Law and Kelton, 2000;Rohrer, 2000). These are essential in establishing the credibility of simulation analyses, without which the results will not be used in decision-making (Law and Kelton, 2000).…”