RDI

25 Jun 2025 / Capture

Drone surveys in the evidence chain

Aerial surveys add a perspective the ground cannot give. Treat them as one record in a chain, not as a standalone deliverable.

Field note

A scheduled drone survey gives the project a perspective the ground cannot give. Earthworks volumes, roof and facade progress, site logistics from height. The survey on its own is useful. The survey as part of a chain is more useful still.

Time-aligned with everything else

A survey flown on the same day as a programme update, an OAC meeting, or a delivery window adds context that the survey alone cannot provide. The discipline is to plan the survey calendar against the workflows the project already has, not to schedule it independently.

  • Schedule against the programme baseline, not against weather windows alone.
  • Process the deliverables to a known cadence so reports are predictable.
  • Index the orthomosaics and elevation data alongside the ground capture.
  • Reference the survey in any progress dispute it can settle.

Drone surveys also age well. A survey from twelve months ago is often the cleanest evidence available for a question that arises after handover. Preserve them with the same care as ground capture and the project gets a useful long-tail benefit.

Field notes are part of the public RDI reference. For shorter definitions, use the glossary. For full reference articles, see the knowledge base.