Sub-base, Bedding, Edge Restraint and Ironwork
Prepare stable layers and restore kerbs, edges and fixed features to the required line and level.
How to prepare for Street Works operative assessment
Connect technical knowledge to observable performance: check the jurisdiction and plan, select and inspect resources, carry out each stage safely, verify the result and stop when reality departs from the applicable code.
Core concepts
Concept 1
The sub-base and bedding system must suit the module, loading, existing construction and applicable specification.
Exam cue: Remove loose material and correct failed underlying layers.
Concept 2
Edge restraints prevent lateral movement and fixed features must be stable and correctly related to the finished surface.
Exam cue: Set kerbs, covers and edges against the finished profile.
Concept 3
Bedding thickness, moisture, line, level and crossfall are controlled before modules are laid.
Exam cue: Prepare only as much bedding as can be covered without disturbance.
Risk pitfalls and guardrails
Using bedding to correct a failed sub-base.
Guardrail: Do not use a certificate, generic course note or familiar past site as a substitute for current plans, code, permission and physical verification.
Leaving an unsupported cut edge.
Guardrail: Do not use a certificate, generic course note or familiar past site as a substitute for current plans, code, permission and physical verification.
Setting ironwork proud of an accessible footway.
Guardrail: Do not use a certificate, generic course note or familiar past site as a substitute for current plans, code, permission and physical verification.
Memory anchors
Foundation Before Finish
Correct sub-base defects first.
Edges Hold the Pattern
Restore stable restraint.
Features Set the Level
Coordinate covers, kerbs and drainage.
Bedding Stays Undisturbed
Prepare and cover in a controlled sequence.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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