Grading contractors who document their work properly close projects faster, get paid sooner, and have the records they need when disputes arise. The ones who do not document end up re-surveying finished work, defending grade claims without data, and sometimes regrading areas they cannot prove were correct. Documentation is not overhead — it is protection.
What documentation should grading contractors maintain for earthwork?
Grading contractors need four types of earthwork documentation: (1) pre-grading existing conditions survey on a 50-ft grid to establish baseline elevations and cut/fill quantities; (2) lift-by-lift records showing lift thickness, material type, compaction test results, and post-compaction elevations; (3) finish grade verification survey on a 25-50 ft grid compared to design, with out-of-tolerance areas flagged and corrected; and (4) QC certifications signed by the responsible technician for each phase. Together these records prove that grading was done correctly and protect against future disputes.
The pre-grading survey establishes the existing ground elevation before any work begins. This survey is critical for two reasons: it provides the baseline for cut/fill quantity calculations, and it documents pre-existing conditions so that any drainage, slope, or elevation problems present before grading began are on record.
Best practices for pre-grading surveys:
On projects where the owner provided a preconstruction survey, verify that the survey matches observed conditions. Discrepancies between the owner's survey and actual conditions are a change order item — but only if you documented the actual conditions before beginning work.
For filled and embankment areas, every lift must be documented before the next lift is placed on top. Once a lift is covered, the only way to verify it is through destructive investigation — test pits or probes. A complete lift record includes:
Lift thickness documentation is often overlooked. The specification may require maximum 8-inch loose lifts. If the lift was actually 12 inches loose and compacted to the required density, the compaction test passes — but the lift thickness was a specification violation. Without lift thickness documentation, you cannot prove compliance.
Finish grade verification is the last gate before the next phase of work begins. It confirms that the graded surface matches the design within tolerance. On a typical grading project, the sequence is:
The finish grade verification record is the document that protects you if the owner later claims the grade was wrong. Without it, you have no way to prove the grade was accepted at the time of handoff.
| Phase | Required Documentation | Timing |
|---|---|---|
| Pre-grading | Existing conditions survey, site photos | Before any grading begins |
| Excavation | Excavation limits survey, unsuitable material removal record | Before and after overexcavation |
| Each fill lift | Material ticket, lift thickness, compaction tests, elevation | Before placing next lift |
| Subgrade finish | Finish grade survey, deviation table, QC sign-off | Before base or structural placement |
| Final grade | Final as-built survey, certification | After all grading complete |
| Project closeout | Complete documentation package assembled and submitted | Before final payment application |
Sitemark captures grade verification shots, compaction records, and phase sign-offs in the field — organized into a project documentation package as you work. Start free.
Start Free Trial