Civil and structural expert witness engineer in a dark suit holding a rolled structural drawing in a panelled courtroom, conveying judicial authority

Civil & Structural Expert Witness Consultancy

Unimpeachable Engineering Evidence for Courts, Insurers & Counsel

Pack Engineering delivers forensic reports, expert conclaves, and Supreme Court testimony backed by 100+ reports and proven judicial credibility — with offices in Sydney, Brisbane, and Canberra.

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+ Expert witness reports delivered

Supreme Courts

Appearances in NSW, Victoria & Western Australia

12+

Expert conclaves attended

3 Offices

Sydney · Brisbane · Canberra

Published

Structural engineering textbook author

Expert Witness & Engineering Services

Precise, evidence-focused engagement across the full lifecycle of structural and civil disputes — from inspection through to testimony.

A 3D finite element analysis (FEA) model of a bolt showing stress distribution through a color-coded mesh, highlighting high stress areas in red and pink against a blue background

Structural Engineering Expert Witness Services

Specialised forensic reporting, expert conclaves, and court appearances for complex structural disputes across industrial, residential, and commercial sectors.

Civil Engineering Expert Witness Services

Expert technical analysis and testimony for civil infrastructure projects, providing authoritative reports on engineering failures and compliance.

Bespoke Engineering Design & Analysis

Advanced structural design for complex projects, utilising 3D modelling and Finite Element Analysis (FEA) for non-standard construction requirements.

Forensic Engineering Inspections

Detailed site investigations and structural assessments to identify defects, evaluate structural integrity, and provide evidence-based findings for litigation.

Construction & Project Management Consulting

Professional advisory in construction methodology, project management standards, and technical dispute resolution.

Statistical Data Analysis & Critique

Specialised statistical expert witness services to critique data sampling and provide quantitative analysis for engineering and construction cases.

The Experts Who Appear in Court

Professional headshot of senior structural engineer Lonnie Pack in a dark blazer and white shirt, conveying scholarly authority

Lonnie Pack

Founding Director — Sydney-based · Expert witness since 2017 · 50+ cases

Court appearances in the Supreme Court of NSW and the Supreme Court of Victoria. Eighteen years' experience across civil & structural engineering.

Expertise spanning steel, concrete and timber structures, geotechnical engineering, Finite Element Analysis (FEA), and material testing.

Evan McDowell

Listed Expert — civil & structural engineering analysis and testimony.

Full CVs are available upon request.

Technical Command of Australian Standards

Our forensic work centres on the investigation of structural failures and rigorous assessment of compliance with the Australian Standards — supported by advanced calculation and analysis methods.

Forensic Capabilities

  • Site investigations
  • Sampling & testing methodologies
  • Document review
  • Advanced structural calculations
  • 3D modelling & Finite Element Analysis (FEA)

Key Standards

  • AS/NZS 1170 — Structural design actions
  • AS 1720 — Timber structures
  • AS 4100 — Steel structures
  • AS 3600 — Concrete structures
  • Experience with international standards & codes of practice
Hardcover structural engineering textbook Australian Guidebook for Structural Engineers open to worked calculations and CAD details, lit by a brass desk lamp

Published Structural Engineering Authority

Australian Guidebook for Structural Engineers

A 525-page structural engineering textbook. The first edition was written by Lonnie Pack; Brian Kinnear contributed the concrete chapter for the second edition.

Coverage includes actions (wind, seismic, dead/live loads), steel, concrete, timber, and geotechnical design.

The second edition is updated for AS 4100:2020, AS 3600:2018, AS 1170.4:2024, and AS 1720.1:2010.

Evidence of Standing

★★★★★

5.0 rating

"I found Mr Pack to be a most impressive witness. He gave his evidence calmly and clearly."

— Judgement, March 2018 (Proceedings 2015/120806)

"Mr Pack's unchallenged evidence should be accepted in its entirety."

— Expert Determination, May 2021 (confidential)

"It was a pleasure working with you – no doubt we will work together again in future."

— Client, October 2022 (confidential)
★★★★★

A 5-star client review.

— James Weidmann

Professional references are available upon request.

Request a Consultation

Engagements are available by appointment across our Sydney, Brisbane, and Canberra offices. CVs and rates are provided upon request.

Email: emailingadmin@packengineering.com.au

Service areas: Sydney · Brisbane · Canberra

Availability: By appointment