Hi everyone,
I'm running into an issue with the End Area Volume Report in OpenRoads Designer 2026 and I can't figure out what's going on.
Setup:
Two DTM surfaces (existing ground vs. design)
Generating cut and fill volume reports using the End Area Volume method
Both reports generated using the same two surfaces
What I found:
✅ The PowerCivil report is correct — I verified every single station by manually measuring the cut and fill areas directly on the cross sections. Station by station, the values match perfectly.
✅ The cross sections generated by OpenRoads itself also have the correct areas — when I measure them manually, they match PowerCivil exactly.
❌ But the End Area Volume Report generated by OpenRoads shows completely different values for cut and fill.
The pattern I'm seeing:
In the middle portion of the alignment, the fill (embankment) areas and volumes are identical between both reports
At the beginning and end of the alignment, neither cut nor fill match at all — completely different numbers
The report doesn't even reflect the values that are measured on the very same cross sections it uses as a source
In other words: The cross section geometry is correct. The measured area on each section is correct. But the report outputs different numbers. The error is somewhere between reading the area from the section and writing it to the report — or perhaps in the calculation method itself.
I'm not sure if this is a bug in the report generation or in the calculation engine — the raw report shows what it calculated, so maybe it's the latter.
I'll make both reports (PowerCivil and OpenRoads) and the .dgn file available for anyone willing to take a look.
Has anyone seen this behavior before? Could it be related to Material List configuration, Sample Range settings, or is this a known issue in OpenRoads 2026?
Any help is appreciated.