Architects utilize BIM to create three dimensional spaces and buildings. BIM has the potential to enhance the design team’s visualization of a project as well as improve the design team’s coordination of a project. It has been shown that BIM has the ability to aid the contractor’s efforts to manage acceleration, avoid delays and mitigate disruptions.
Better coordinated 2D drawings can potentially now be extracted from BIM models. Changes to three dimensional models during the design process are automatically updated in extracted 2D drawings. Historically, 2D drawings were manually checked for coordination and accuracy. A quality control specialist spent multiple days reviewing two dimensional drawings attempting to make sure the architecture and engineering components blended properly into an integrated design. Available BIM software includes programs for semi-automated quality control. When properly utilized, these programs perform coordination checks called “clash detection”. Working in 3D, designers have the potential to identify conflicts between and amongst the building systems that might not be readily identified on 2D drawings. When properly utilized, the clash detection can eliminate serious constructability issues before work has begun onsite. This can mitigate risk by providing greater accuracy and ensuring that building systems fit in the locations shown on the drawings. Properly executed clash detection has the potential to benefit the designer, contractor and owner. It can reduce requests for information (RFIs) and change orders thereby helping to keep the project on schedule.