What characterizes a hard clash in BIM?

A hard clash in Building Information Modeling (BIM) is characterized by components that physically overlap in the same space. This occurs when two or more elements are occupying the exact same volume, making it impossible for them to coexist without conflict. Hard clashes are critical to identify during the design and planning phases because they can lead to significant issues during construction, including delays, increased costs, and the need for extensive rework.

Identifying these overlaps in modeling software allows teams to resolve conflicts early in the process, ensuring that the construction can proceed smoothly. Effective use of BIM tools enables project managers and designers to visualize and analyze the spatial relationships among various building components, thereby enhancing coordination and collaboration across disciplines. This proactive approach can lead to a more efficient construction process and improve overall project outcomes.