Seismic Restraint Engineering Assessments for Mechanical Systems
Protecting HVAC and Mechanical Infrastructure from Seismic Forces Across Commercial, Healthcare, and Government Projects
EVC Engineering is a Newcastle-based mechanical engineering consultancy with over 40 years of experience delivering HVAC and mechanical services for large-scale commercial, healthcare, government, education, and industrial projects across the east coast of Australia. With a team carrying more than 100 years of combined expertise, we have a deep understanding of the structural and regulatory requirements that govern mechanical systems in buildings located in seismic risk zones.
Seismic restraint assessment for mechanical systems is a highly specialised discipline that sits at the intersection of structural engineering principles and mechanical services design. EVC Engineering brings both to the table — we understand how HVAC systems, ductwork, pipework, and mechanical equipment behave under seismic loads, and we have the experience to assess and document restraint requirements in a way that is accurate, compliant, and practical for contractors to implement. Accredited across New South Wales, Queensland, Victoria, Tasmania, and the Australian Capital Territory, we work alongside structural engineers, architects, builders, and developers to ensure mechanical systems are properly assessed and protected.
Featured Projects
EVC Engineering has delivered As-Built drawing services across a wide range of sectors and project types. A selection of relevant projects includes:
Meriton Suites, Canberra
Gunnedah Hospital Redevelopment
Trilogy, Macquarie Park
Newcastle Tower, 711 Hunter Street
Why Choose EVC Engineering for As-Built Drawings?
Specialist mechanical engineering expertise applied to seismic restraint assessment — our team understands how HVAC and mechanical systems behave under seismic loads, delivering assessments that are technically sound and practically buildable
Integrated with mechanical design — because EVC Engineering typically designs the mechanical systems we assess, our seismic restraint documentation is coordinated with installation drawings, reducing clashes, gaps, and costly on-site surprises
Accredited and experienced across five states and territories including New South Wales, Queensland, Victoria, Tasmania, and the Australian Capital Territory, with a thorough understanding of AS1170.4 and its application across different building classifications
Proven across high-consequence building types including hospitals, government facilities, and large-scale commercial and residential developments where the stakes of inadequate restraint are highest
Clear, certifier-ready documentation prepared to the standard required by structural engineers, certifiers, and government approval bodies, supporting a smooth and efficient approval process
AS1170.4 Compliant Seismic Restraint Assessments for HVAC and Mechanical Building Services
In Australia, seismic design requirements for buildings and their non-structural components are governed by AS1170.4 — the Australian standard for structural design actions relating to earthquake. Non-structural mechanical components, including HVAC equipment, ductwork, pipework, air handling units, and other mechanical services, must be assessed to ensure they are adequately restrained to withstand seismic forces relevant to the building’s location and classification.
Unrestrained or inadequately restrained mechanical systems can cause significant damage during a seismic event — not just to the systems themselves, but to the broader building structure and, most critically, to the people inside. In healthcare facilities, government buildings, and other essential services, the failure of mechanical systems during or after an earthquake can have serious consequences for operational continuity and public safety.
EVC Engineering provides thorough seismic restraint engineering assessments for mechanical systems, evaluating existing and proposed installations against AS1170.4 requirements and delivering clear, documented recommendations for compliant restraint solutions. Our assessments are coordinated with the broader mechanical design scope, ensuring consistency between restraint documentation and installation drawings.
Capability Highlights;
AS1170.4 compliant seismic restraint assessments for HVAC equipment, ductwork, pipework, and mechanical services in buildings across all seismic hazard zones
Assessment of suspended and floor-mounted mechanical equipment including air handling units, chillers, cooling towers, pumps, and associated pipework and ductwork
Seismic restraint design recommendations providing practical, buildable solutions that can be implemented by mechanical services contractors
Coordination with structural and mechanical design documentation ensuring restraint requirements are clearly communicated and consistently applied across the project
Assessment for new builds, extensions, and upgrades across healthcare, government, commercial, education, and industrial building types
Compliance documentation suitable for submission to certifiers, councils, and government approval bodies
Contact us today to discuss how our seismic restraint engineering assessment can enhance the safety of your building.
Contact us today for a consultation or to learn more about how we can help.