Check Topcon field data against the calc before it leaves site.
Pick the job type first. It sets the tolerances and whether heights are graded.
Use the upload file that went to the controller as the calc, and the MXL exported from Topcon Field after the job. Export with raw observations so setups, backsights and resections can be checked.
Each download asks you to confirm the save. The zip holds everything, including the DXF drawings for CAD. Open a DXF in BricsCAD and Save As DWG to amend it; it is drawn in real MGA coordinates at the plotted scale, with named layers.
This is a checking aid. A green report means the field data agrees with the calc and with itself inside the tolerances below. It does not replace review and sign-off by a registered surveyor, and a senior can override any result with a reason on file.
| Job type | Heights | 1 Calc to survey (after best fit) | 2 Survey to survey | 3 Setout to design |
|---|---|---|---|---|
| Detail | graded | ≤10 green · ≤15 orange · >15 red | ≤10 · ≤20 · >20 | - |
| Cadastral | not graded | ≤10 · ≤15 · >15 | ≤5 · ≤10 · >10 | - |
| Building setout | graded | ≤10 · ≤15 · >15 | ≤5 · ≤10 · >10 | pass ≤5, fail >5 |
Boundary checks need at least 3 independent agreeing marks; marks used to set up the instrument do not count. Any setout item outside 5 mm stops release and watermarks the client sketch.