Estimated from the DTM (bare-earth) model on a ~2 m grid inside the last measured area. Balanced mode sets the level plane where cut equals fill. In-place volumes — no compaction or shrink/swell factor.

Trusses drop only inside the measured area and clamp to the DTM. Check Reach colors trusses green within boom reach, red outside. Save Plan exports the polygon, trusses, crane, and cut/fill plane as JSON; Load Plan rebuilds it after a fresh page open.