About Seismic Design Australia
Built on Industry Expertise
Seismic Design Australia was founded to address a clear gap in the Australian construction market — the need for dedicated, specialist expertise in seismic design for non-structural building elements — independent of product suppliers.
Who We Are
Our Story
Director & Principal Engineer
Lachlan Dahler - BEng, BSc NER, RPEQ, RPEV, RPE (NSW, ACT), BIE (VIC, ACT), DEP (NSW)
Lachlan is a registered professional engineer in the disciplines of structural and mechanical engineering. He entered the construction industry many years ago and observed a serious need for improvement in practices. This sparked his passion to make a difference and lead the push for compliant engineering solutions to be prioritised ahead of other industry commercial interests. With his broad range of academic qualifications, industry and practical experience, he prides himself in undertaking Engineering Consultancy to the highest standard. Reach out to him at anytime with your industry questions.
Director & Lead Resilience Consultant
Jordan Bartlett - BBus, BApSc, GC-RMGT, MDRSD
Jordan is a consultant with extensive experience in disaster management, resilience planning and business continuity. Through his company Proactive Design he has delivered solutions to the construction industry for many years. He specialises in capturing post-disaster functions of critical infrastructure and converting them into resilience measures for natural hazard events. Jordan consults and curates industry guidance from standards, technical societies, and conferences. He is dedicated to providing solutions for Importance Level 4 (IL4) facilities and is an industry leader in the "special study" required by the Building Code of Australia through AS 1170.4. Harnessing disruption for innovation!
Standards & Qualifications
Credentials & Standards
Registered Engineering
Work is carried out and certified by registered professional engineers with specialist expertise in seismic, structural and mechanical engineering. NER, RPEQ, RPEV, RPE (NSW, ACT), BIE (VIC, ACT), DEP (NSW)
NATSPEC & BCA Alignment
Our documentation aligns with NATSPEC specifications and the National Construction Code, ensuring seamless integration with project documentation.
Standards Committees and Engineering Societies
Seismic Design Australia is represented within: - AS 1170.4 Standards Committee (BD006-11) - Australian Earthquake Engineering Society (AEES) - Association of Wall and Ceiling Industries (AWCI) - Business Continuity Institute (CBCI #0564418)
Government Authorisation
Pre-approval from government agencies to undertake work on state controlled projects. Authorised to undertake Importance Level 4 special studies for hospitals, emergency services, and other post-disaster critical facilities.
What Drives Us
Our Values
Technical Rigour
Every design is grounded in first-principles engineering and current Australian standards.
Engineering First
Engineering quality is valued ahead of any other industry commercial interest.
Clear Communication
We translate complex engineering requirements into clear, actionable documentation for your team.
Project Certainty
Contractors can be ensured that projects are delivered with full transparency.
Service Area
Australia-Wide Coverage
We operate as a national consultancy, delivering seismic restraint engineering services to clients across all Australian states and territories. Whether your project is in a high-seismicity zone or a low-risk region, we provide the right level of engineering rigour for your location and building classification.
Ready to Work Together?
Tell us about your project and we'll provide a clear, practical path to completion.