Ground brief
Record material description, moisture condition, available information, target work area and follow-on construction.
HEIC selection guide
Use this guide to make the project discussion more precise.
High Energy Impact Compaction selection starts with a defined project brief. CMG can discuss an impact roller system after the project provides material, moisture, working area, access, tow equipment, turning space, programme and acceptance inputs.
The guide deliberately avoids universal improvement-depth or compaction-result claims. Those outcomes require project-specific ground information, work planning and verification.
Ask about this topic
Guide contents
Questions a technical buyer should resolve before selection.
System configuration
Review the impact roller, tow tractor, damping arrangement, operating space and any monitoring route as a complete system.
Working controls
The available CMG manual guidance states a recommended 10-15 km/h operating speed, avoidance of sharp or high-speed turns, and no operation on slopes above 30 degrees, muddy surfaces, unstable ground or pits.
Verification
Agree the project acceptance route before mobilisation and keep process records distinct from final acceptance evidence.
Evidence boundary
A useful guide is clear about what it does not prove.
CMG uses this resource to organise a project conversation. It does not replace site investigation, geotechnical design, equipment documentation or the project acceptance specification.
- Do not map manual data from one unconfirmed model line to another.
- Do not treat monitoring records as automatic acceptance.
- Stop and review when ground or access conditions change.
Buyer checklist
Prepare these inputs before sending an RFQ.
- Material and moisture condition
- Working area and pass or route plan
- Turning space, access and gradient
- Tow equipment and support arrangement
- Project acceptance and delivery requirements
Decision record
Turn the research question into a reviewable equipment brief.
Use the following record as a handover between procurement, site engineering and the equipment supplier. Empty fields are signals to investigate, not assumptions to fill with a generic machine claim.
Inputs to evidence
- Material and moisture condition
- Working area and pass or route plan
- Turning space, access and gradient
- Tow equipment and support arrangement
Decision to make
- Ground brief
- System configuration
- Working controls
Documents to request
- Source-matched model specification and configuration
- Operating and maintenance guidance for the quoted scope
- Project-specific verification and handover requirements
Related equipment
Move from the question to a CMG equipment review.
35kJ Impact Roller
High-energy polygonal roller for demanding subgrade and ground improvement projects.
Explore
32kJ Impact Roller
A high-energy impact roller for embankment, subgrade and foundation treatment.
Explore
30kJ Impact Roller
Balanced high-energy compaction for road base, fill and infrastructure construction.
Explore
Video centre
Use video as context, not as unsupported proof.
Review available CMG equipment footage, then bring your project inputs to the technical discussion.
Visit the CMG video centreResource FAQ
Further questions for the project team.
What is needed to select a HEIC system?
A ground brief, work area, access, turning space, tow arrangement, programme and acceptance inputs.
What speed should be planned?
The available CMG manual guidance for the relevant impact roller operation states 10-15 km/h; final work controls remain project-specific.
Can HEIC be used on all ground?
No. Suitability depends on the actual ground, access, working area and project engineering review.
How is the work verified?
The project specification defines verification; equipment records may support but do not replace acceptance evidence.