TRACE Earthwork

Navigate: orbit, zoom or switch to plan view. Undo/redo covers grade, display and point-mark edits. Save work downloads your session.

Shape the proposed grade

TRACE reference surface · replace with an authorized project surface for project work.

Proposed horizontal elevation (meters) Show proposed grade plane Show terrain triangle edges

Cut: above gradeFill: below grade

Colors show where the existing terrain is above or below the target. Geometry stays at original elevation. Vertical scale is 1×.

Inspect the terrain

Drag to orbit; scroll or pinch to zoom. Two fingers pan. Plan view locks rotation until you choose 3D.

Center section A–A

Section at the midpoint of the source Y range. Dashed line: proposed grade. Section scales differ by axis.

Load your surface

Surface JSON (meters only)

Visualization only. Validated quantities are not calculated in this viewer.

Accepted input and limits

JSON: {"units":"m", "vertices":[[x,y,z],…], "faces":[[0,1,2],…]}. Coordinates are meters. Face indices are zero-based. Up to 50,000 triangles. A report may embed the same object under "existing" or "existing_surface". This viewer does not establish survey accuracy, coverage completeness, topology validity or suitable excavation side slopes. No CAD or PDF extraction is simulated.

A horizontal target does not design retaining walls, safe excavation slopes or daylight transitions. Quantities require the separate validated calculation engine.