Clash Objects
- Last UpdatedMay 19, 2025
- 3 minute read
Ensuring that each proposed new element of a brownfield re-design is quickly found to be clash free against the entire laser scan dataset is of critical importance. Conversely, when a clash is located against a proposed design object, designers need to know exactly where the clashes would be located against the laser scan data. Swift action then needs to be taken to resolve this.
To run a clash check:
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In the MicroStation CONNECT interface, select the item(s) in the drawing that are to be checked.
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In the Point Cloud Manager interface, if you wish to set a clash clearance value, go to File > Options > Project and edit the Clearance field as shown below.
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Then, in the MicroStation CONNECT interface, in the Clashing menu, select the Clash Objects icon. When the clash check procedure is initiated, Point Cloud Manager first checks to see if any elements of the drawing are selected. If it detects any selected items, you will be prompted to accept the clash check relates to the selection only - or all the drawing.
A clash report is then displayed in Point Cloud Manager. A padding volume around the clash objects is displayed, with a distance that is equivalent to the clash clearance value you set.
The following image shows an example of a clash in Point Cloud Manager. It shows clashes between points and MicroStation primitives in RED.
To turn off the clashed objects for clarity, in the Point Cloud Manager interface, in the Visualisation menu, toggle the CAD Objects button.
Reviewing a Clash Report
The clash report indicates which drawings have been checked against the point cloud, and if the drawing is clash free. The parent group is displayed as a pass or fail in the listing, and will be highlighted as a green tick or red cross. The group checked could be a drawing or a layer.
Clash shown below in Point Cloud Manager 3D. All clashes between points and CAD primitives are displayed in RED.
The image below shows the Clash Manager after a clash check, the group checked is displaying a fail (red cross). You can expand the branch to look for individual objects causing concern. Each item can be interrogated and manipulated as required.
For detailed information about interpreting and customizing these reports for project work, please read Clash Manager (AVEVA Point Cloud Manager Server section).