Soil Compaction Density Test Log

This template records the details needed to evaluate whether a soil lift meets the required compaction standard. It captures project information, lift thickness, test method, Proctor reference data, field density results, and the final acceptance decision. Use it when you need a consistent record for earthwork quality checks, backfill verification, or subgrade acceptance.

Log the test as soon as the field reading is taken, while the lift location, moisture condition, and equipment passes are still fresh. It is especially useful after each placed lift, before covering work, and before requesting approval from the reviewer or inspector. If a test fails, the same log should also capture the corrective action and retest date.

A field inspector, geotechnical technician, or quality control lead typically completes the log, depending on the project workflow. The reviewer or supervisor can then sign off after checking the results and supporting files. If your process separates data collection from approval, this template supports that handoff cleanly.

Yes. The template includes a field for test method so you can record the approach used for the density check, along with the matching Proctor reference method. That matters because the acceptance result depends on comparing the field reading against the correct laboratory baseline. If your project uses multiple methods, keep the method field consistent across all logs.

Common mistakes include leaving out the lift number, mixing up wet and dry density, or recording the wrong Proctor reference values. Another frequent issue is documenting the result without noting the actual passes made or the corrective action after a failed test. This template helps prevent those gaps by separating field data, acceptance, and follow-up into distinct sections.

It creates a clear audit trail showing what was tested, where it was tested, which reference values were used, and who reviewed the result. That supports quality control records and makes it easier to explain acceptance decisions later. If your project has formal inspection or closeout requirements, the attachments and sign-off fields help keep the record complete.

Yes. You can add fields for project phase, stationing, grid coordinates, material source, or specification reference if your workflow needs them. Keep the form focused on the data you actually use so it stays aligned with data minimization and remains quick to complete in the field. Conditional logic can also hide follow-up fields until a test fails.

After submission, the reviewer should confirm the acceptance status, check any attached photos or lab reports, and assign corrective action if the test failed. If a retest is required, the retest date should be scheduled and linked to the original record. This keeps the log useful as both a field record and a follow-up tracker.