Trace
- Last UpdatedFeb 12, 2026
- 2 minute read
Traces the boundary of an existing floor, screed or negative extrusion to create a new surrounding wall, floor or screed.

You must first identify the floor screed or negative extrusion that already exists, from which its boundary is to be changed:
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From the Boundary Tracing window, select CE, or select Pick. You are prompted to Pick Element for Boundary Tracing: The name of the selected element displays in the Boundary Tracing window.
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From the Trace part of the Boundary Trace window, select the type of element to be created - Walls, Floor or Screed.
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The Offsets part of the Boundary Tracing window allows you to position the new element:
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Boundary positions the edges of the new element relative to the edges of the traced element. A positive boundary offset positions the new edges outside the traced boundary, a negative boundary offset positions the new edges inside the traced boundary.
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Elevation positions the vertical position of the new element.
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Mitre Walls check box is only available when the element to be traced is a wall element, the functionality allows you to determine if junctions between the walls are to be mitred.
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Click Apply to trace the boundary.
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A Confirm window displays, click Yes to retain the boundary.
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Click No to abandon the trace.
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Click Cancel to discard any information and close the Boundary Tracing window.