Structural steel and concrete building frame against a clean sky

Pack Engineering · Expert Witness Consultancy

Structural & Civil Engineering Expert Witness Authority

Courtroom-grade engineering evidence that holds up under cross-examination. Over 100 expert reports delivered and evidence given across multiple Supreme Court proceedings, with offices in Sydney, Brisbane, and Canberra.

Credentials & Track Record

0

Expert witness reports delivered+

0

Expert conclaves attended+

3

Supreme Courts: NSW, VIC & WA

5.0

Client rating

Appearances in the Supreme Court of NSW, Supreme Court of Victoria, and Supreme Court of Western Australia.

Extensive mediation and case management conference experience.

Offices in Sydney, Brisbane, and Canberra.

Services

Full-Spectrum Engineering Expert Services

From expert witness reporting and forensic inspection to advanced design analysis and statistical critique, Pack Engineering delivers clear, defensible technical conclusions for litigation lawyers, courts, and firms.

CVs and rates are available upon request.

A 3D finite element analysis (FEA) model of a bolt showing stress distribution through a color-coded contour map on a triangular mesh.

Structural Engineering Expert Witness

Comprehensive reporting and testimony for industrial, residential, and commercial structural disputes, backed by over 100 successful reports.

Civil Engineering Expert Witness

Technical reporting and expert evidence for complex civil infrastructure and construction litigation across Sydney, Brisbane, and Canberra.

Bespoke Design & Advanced Analysis

High-end design using 3D modelling and Finite Element Analysis (FEA) for complex projects requiring non-standard materials and solutions.

Forensic Engineering Inspections

Detailed site investigations identifying defects, failures, and compliance issues in existing and multi-storey structures.

Expert Conclaves & Litigation Support

Professional representation in expert conclaves and court appearances, delivering clear technical conclusions to assist dispute resolution.

Construction & Project Management Consulting

Advisory services on construction methodology, project oversight, and management disputes within the engineering sector.

Statistical Data Analysis & Critique

Specialised statistical services to critique data sampling and provide rigorous quantitative analysis for engineering and legal applications.

About the Firm

Specialised Authority, Founded on Demand

Pack Engineering was founded by Lonnie Pack in 2021 in response to growing demand for specialised structural engineering expert witness services across Australia.

Our team brings together expertise in structural engineering, construction, project management, and statistics — investigating structural failures and assessing compliance with Australian Standards including AS/NZS 1170, AS 4100, AS 3600, and AS 1720.

We are trusted by leading litigation firms, including Colin Biggers & Paisley, to deliver evidence that withstands scrutiny.

With offices in Sydney, Brisbane, and Canberra, we serve courts and firms nationally.

Structural engineer's office with technical books, textbook, and laptop showing structural analysis

People

Credentialed Expert Engineers

The firm wins work on proven, demonstrable expertise. Detailed CVs are available upon request.

Formal portrait of a senior structural engineer in business attire against a dark navy background

Lonnie Pack

Founding Director · Sydney

Providing expert witness services since 2017, with 50+ cases and eighteen years' Civil & Structural engineering experience.

Experience spans steel, concrete, and timber structures; residential, roads, bridges, dynamics, demolition, lifting analysis, geotechnical, foundations, and retaining walls — with specialisation in Finite Element Analysis (FEA) and material testing.

Court experience: Supreme Court of NSW and Supreme Court of Victoria.

Evan McDowell

Engineering Team

A valued member of the Pack Engineering team, contributing relevant engineering expertise to the firm's expert witness and analysis work.

Hardcover structural engineering textbook standing upright with a brass-toned spine accent

Publications

Australian Guidebook for Structural Engineers

A 525-page structural engineering textbook, with the first edition written by Lonnie Pack. Brian Kinnear contributed to the concrete chapter for the second edition.

Coverage includes actions (wind, seismic, dead and live loads), steel, concrete, timber, and geotechnical design — supported by worked examples and CAD details.

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

Reviews & Judicial Commentary

Authority That Survives Cross-Examination

★★★★★ 5.0 rating

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

— March 2018, Judgement in Proceedings 2015/120806

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

— May 2021, Expert Determination (confidential)

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

— October 2022, Client (confidential)

★★★★★

A verified 5-star client review.

— James Weidmann, Google Review

Professional references can be provided upon request.

Contact

Request a Consultation

Pack Engineering is available by appointment. We assist litigation lawyers, courts, and firms with expert engineering evidence across Sydney, Brisbane, and Canberra.

Offices & Service Area

Sydney · Brisbane · Canberra

Enquiry Types

Inspection & Assessment · Expert Witness Report · Conclave & Case Management Conference

CVs and rates are available upon request.