Existing Surface Survey — Survey Before Grading
Define the finished purpose, reference levels, underlying material condition and the evidence required by the receiving operation. Geometry alone does not establish structural or agronomic performance.
This reference assembles relevant extracts from the guide library. It is general project planning, not a local project report, verified specification or translated technical publication.
Existing-Surface Survey
An existing-surface survey records what is present before soil moves. Omitting a drain edge, bank or abrupt grade change can distort the volume model even when point readings are correct.
Before moving material
Identify the work extent and important surface features.
Receiving operation and checks
Compare the surveyed surface with the proposed design. Inspect coverage and gaps rather than relying only on a coloured map.
Survey spacing must reflect terrain and required precision, not a universal grid size.
Read the complete Existing-Surface Survey guideSurvey Existing Ground
Surveying existing ground is the first project-stage record of the surface to be changed. Agree the coverage before the survey so critical features are not omitted.
Before moving material
Define boundaries of work, reference control and required detail.
Receiving operation and checks
Issue the survey with datum, units and limitations stated. Check control-point agreement and representation of abrupt terrain changes.
A survey deliverable should not be confused with a legal boundary determination.
Read the complete Survey Existing Ground guideMachine Before - Dugong - Machine After
The machine before Dugong determines what material arrives; the machine after Dugong determines what surface must leave. An excavator can expose formation, a loader can deliver a stockpile, and a roller can compact the placed layer. The scraper's role is bounded by those interfaces.
Before moving material
Identify the upstream operation and its remaining defects.
Receiving operation and checks
Hand over the measured surface to compaction, cultivation, paving or turf preparation. Record which operation owns levels, materials and final acceptance.
The workflow can include Dugong where suitable; it does not assume Dugong replaces adjacent equipment.
Read the complete Machine Before - Dugong - Machine After guideRecord the job inputs
Use this checklist to turn the scenario into a specific brief. Retain the design revision and agree who accepts each completed layer.
Checklist ticks apply only while this page is open. Include the completed brief in your project records.
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