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Project Snapshot
QSEC Group engaged CCC Engineering to provide an independent mechanical services review and compliance certification for the South-East building at 3 Kiora Road, Miranda. The mixed-use facility (Class 6 retail and Class 7 storage) was subject to a make-good clause requiring confirmation of the extent of works necessary for end-of-life plant replacement. CCC Engineering undertook a detailed condition assessment, cooling load review, and compliance analysis to determine whether the existing 20+ year-old air conditioning systems could be retained or required full replacement. Our advice provided the technical clarity needed to satisfy contractual obligations while ensuring compliance with NCC 2022 and current Australian Standards.
Our Role
- CCC Engineering delivered a staged electrical design service including:
- Non-intrusive site inspection and plant condition assessment
- Cooling load estimate (~102 kW indicative demand)
- Review of existing rooftop DX systems (20+ years old)
- Independent advice on make-good obligations
- NCC 2022 Section J and F6D6 compliance review
- Ductwork compliance assessment (J6D6)
- Recommendation report and compliance certification of new works
Challenges & Solutions
Challenge
All rooftop units exceeded AIRAH DA19 recommended service life (20+ years) and were no longer manufacturer-supported.
Solution
Recommended full plant decommissioning and replacement with modern high-efficiency systems to ensure reliability and compliance.
Challenge
Uncertain suitability of existing ductwork and incomplete as-built data.
Solution
Advised full ductwork replacement to meet NCC 2022 Section J6D6 and ensure verified airflow performance.
Challenge
Cooling capacity alignment with current building use.
Solution
Completed indicative load assessment (~102 kW) to confirm replacement sizing strategy prior to detailed design.
Results
- Clear, independent confirmation of end-of-life plant condition
- Defined scope for compliant make-good replacement
- Alignment with NCC 2022, AS 1668.2:2012 and Section J requirements
- Reduced client risk through documented engineering advice
- Certified new mechanical works in accordance with nominated standards
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