Catchment Fall — Laser Gps Gnss Workflow

GPS/GNSS Receiver Systems

GPS/GNSS receivers provide position information with different correction arrangements and intended uses. Choose the complete positioning workflow for the task rather than buying a receiver solely by its label.

Before moving material

Confirm vertical requirements, correction service and design integration.

Receiving operation and checks

Verify the actual graded surface. Record correction availability and calibration checks.

General navigation equipment should not be advertised as precision grading equipment without evidence.

Dugong + GPS/GNSS Grading

Using Dugong with GPS/GNSS grading requires a complete positioning and implement-reference workflow. Antenna position must be related to the working edge and the issued surface design.

Before moving material

Confirm corrections, datum and the intended control installation.

Receiving operation and checks

Survey or otherwise independently check the resulting grade. Record interruptions and the design revision used.

A tractor's navigation system alone does not establish scraper grade-control capability.

Incorrect Fall

Fall is the change in elevation along a defined direction. An incorrect fall can include a reversal, an insufficient gradient or a gradient that differs from the design.

Before moving material

Identify the start and end points, distance and elevation reference.

Receiving operation and checks

Measure the corrected profile independently. Check intermediate points because correct end levels can still hide a local dip.

There is no universal drainage fall appropriate to every project.

Record 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.

• Existing condition, extent and the reason for intervention
• Required finished purpose, receiving operation and acceptance criteria
• Material type, layer role, source, receiving area and volume state
• Reference levels, datum, survey method and issued design revision
• Available tractor, implement configuration, travel route and turning space
• Checks before work, stopping points and evidence retained at handover

Checklist ticks apply only while this page is open. Include the completed brief in your project records.

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