Collision detection involves high computational complexity, making it essential to use partitioning and location detection methods. Additionally, factors such as engineering quantities, construction sections, and floor levels must be analyzed to optimize the process.
Once collision detection is completed in Revit, it is possible to identify conflicting components and generate detailed collision reports. The collision points can be easily located using the “display” feature, which helps inspectors detect and resolve issues efficiently.
When performing collision detection with Revit, a high-performance computer is required due to its demanding hardware needs. In contrast, Navisworks requires less powerful hardware and offers a simpler interface, allowing designers to learn and operate it quickly. However, Navisworks cannot adjust or correct the positions of detected collision points directly. Model adjustments must be made using the Revit interface. The general workflow for collision detection is as follows:
(1) Importing files: Export models from each discipline in Revit as .nwc files, then import these into Navisworks.
(2) Setting collision parameters: During collision detection, select the objects and types of collisions to check—typically hard collisions, soft collisions, or gap collisions. For soft collisions, define an acceptable range of intersection values. Then, run the collision check and generate a report.
(3) Exporting collision data: After running the collision check in Navisworks, the software automatically generates a report, which can be exported in XML format. This report contains detailed information about each collision point, including status and location. BIM engineers then use this information to locate collision points precisely and return to Revit to make necessary corrections.
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