Clash detection is the terminology used for automating collision finding prior to construction issues in the field during design and preconstruction. This activity fits in a constructability analysis used to find issues that, left unchecked, can lead to problems, cost overrun and productivity loss in the actual construction phase. Clash detection is available in a number of software programs, including Navisworks, Solibri Model Checker, Revit and more. Some software programs have advanced features (like Solibri) and offer the ability to create rules, while some only offer basic features (like Revit).