Farm Field — Road Base Placement

How to Prepare Subgrade for Road Base

Before road base is placed, the subgrade should be accepted for both level and condition. An uneven or weak supporting surface can lead to thickness variation and premature failure above it.

Before moving material

Confirm formation level and identify unaccepted areas.

Receiving operation and checks

Inspect and accept before spreading base aggregate. Record level and material checks for the same work area.

Adding more base material is not automatically a remedy for weak subgrade.

Road Surface Handover

A road-surface handover should identify the layer being accepted and the next paving or traffic operation. A base-layer check and a wearing-surface check are not interchangeable.

Before moving material

Confirm layer specification, alignment and receiving operation.

Receiving operation and checks

Release the accepted layer to surfacing or the intended use. Check edges, junctions and drainage connections.

The design sets applicable tolerances; the machine brand does not.

Farm Road Grading

Farm-road grading should address the reason water and traffic damage the surface. Repeatedly dragging loose material over a pothole can leave its weak base unchanged.

Before moving material

Inspect crossfall, wheel tracks, drain outlets and underlying material.

Receiving operation and checks

Compact and check the surface before normal traffic resumes. Inspect culvert approaches and areas where runoff crosses the road.

Grading cannot compensate for inadequate drainage or unsuitable pavement material.

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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