Structural Integrity Engineering Pty Ltd Brisbane team

Doug Hawkes

Managing Director
Principal Structural Engineer

Doug Hawkes is the Managing Director, Principal Structural Engineer & Owner of Structural Integrity Engineering Pty Ltd.

Doug has over 25 years of experience in the field of mining structures, with significant experience in the design and design auditing of bulk materials handling machinery and mining and heavy industrial infrastructure. This experience extends to a detailed knowledge of Australian and International structural design, machine design, materials and fabrication standards. He holds a Bachelor of Civil Engineering, with honours, from the University of Queensland, is the first Australian awarded an International Institute of Welding (IIW) International Welded Structures Designer Diploma, is a Registered Professional Engineer of Queensland, and also holds a Bachelor of Laws, with honours, from the Queensland University of Technology.

His career has included a wide variety of roles including as a structural design engineer, as site supervisor including contract management tasks for marine piling and wharf infrastructure, offshore workshop QA/QC assessments, conducting detail design auditing for both Australian and overseas suppliers, serious incident investigations and the provision of expert witness services for structural failures.

Doug was the revision drafting leader and member of the Standards Australia Committee ME-043 on the bulk materials handling equipment structural design standard AS 4324.1-2017.

Dr. Matthew Humphreys

Principal Structural Engineer

Matthew Humphreys is Principal Structural Engineer, Advanced Analysis for Structural Integrity Engineering Pty Ltd.

Matthew has over 30 years of experience in a variety of structural engineering fields including mining, materials handling, heavy industrial, institutional, infrastructure and building, on projects of international and domestic natures. In addition, he has significant experience in the research and development of engineering structures including materials and structure testing as well as detailed linear, non-linear and dynamic finite element analysis.

Matthew has undertaken numerous stacker, reclaimer and shiploader audit engineering tasks to AS4324.1 requirements. His key skills lie in the application, review, assessment and judgement of the validity and accuracy of detailed finite element models and analyses.

Matthew has key communication skills to allow concise description of complex analyses and design outcomes to all levels of the project team.

Matthew holds a Bachelor of Civil Engineering, with honours, from the University of Southern Queensland and a PhD in Structural Engineering from the Queensland University of Technology. Matthew is a Registered Professional Engineer of Queensland and a Certified Practicing Engineer of Engineers Australia.

Nicole Morris

Structural Engineer

Nicole Morris is a Structural Engineer at Structural Integrity Engineering Pty Ltd, joining the company in 2021.

Nicole has over 5 years of experience in structural engineering with a strong background in the mining, materials handling, and heavy industrial sectors. Her work spans both greenfield and brownfield environments, with a particular focus on fixed plant infrastructure and bulk handling machinery

Throughout her career, Nicole has delivered a wide range of structural engineering services, including detailed structural design, structural inspections, finite element analysis, design reviews for modifications and upgrades to existing assets and design of remedial works. Her core strengths lie in the inspection, design, analysis, and building and analysis of finite element models of mining and heavy industrial structures.

Nicole holds a Bachelor of Engineering (Civil Engineering), with honours, from the Queensland University of Technology.

Karrie Collyer

Personal Assistant to Doug Hawkes

Karrie Collyer has been with Structural Integrity Engineering since 2008, serving in a dual role as Accounts Manager and Personal Assistant to Managing Director Doug Hawkes. While overseeing the company’s financial operations, she also provides executive support, leveraging her deep understanding of the organisation, exceptional efficiency, and strong organisational skills. Karrie plays a vital role at SIE, ensuring smooth day-to-day operations and upholding a culture of professionalism, trust, and reliability across the company.

Specialist structural engineering advice trusted for over 25 years. Our team's total cumulative knowledge and experience delivers expert guidance on critical, complex, and challenging structural projects across Australia and overseas. We take on projects other companies shy away from.

Rapid incident recovery support you can rely on. Unexpected incidents can be stressful and costly. Our team responds quickly to help restore operations safely and efficiently, ensuring remedial works can be carried out in a risk-controlled manner.

Brisbane Office

Doug Hawkes

Managing Director
Principal Structural Engineer