Dr. Alfredo E. Arenas is a Civil Engineer with over 24 years of experience in geotechnical engineering. Alfredo joined ATCW in February 2024 as a specialist in applying numerical methods to engineering problems, specifically in advanced 2D/3D analysis.
With a background in numerical analysis for NASA projects, forensic analysis of civil works under litigation and major mining projects, he adds immense value to our team as the leader of our Numerical Modelling Technical Community (NMTC).
Hi Alfredo, tell us what excites you about Numerical Modelling.
Numerical modelling is my passion, so much so that I based my PhD on its application in geotechnical engineering. It is the technique of abstracting reality into a set of mathematical equations. It is a tool that helps to make work easier, like Excel, but more advanced and specialised. When applied to engineering, it enhances engineering judgement and our ability to do better work. I have worked on projects in the USA and South America, where earthquakes are more frequent and expected, which has helped develop my specialist approach.
I think it also helps to be a bit nerdy and like computation. I used to make and sell computers that I made from parts, and initially, I thought about pursuing a computer science degree. Then, I did a soil mechanics class and developed an interest in geotechnical engineering. With numerical modelling, I am lucky as I get to do both.
What is the purpose of the Numerical Modelling Technical Community?
We aim to be the leader in numerical modelling in the Australian market. We are formalising the 2024-2026 Strategic Plan and creating a standardised product across the company and other KPIs. We approach each project as a consulting company, not as a researcher, which is a significant point of difference. Since we are already known for our ability to provide solutions for technically complex projects, our aim for 2025 is to be the first choice for all numerical analysis needs.
Tailings Dam Break and Runout Modelling (Material Point Method)
You have a unique depth of experience in this area; how are you upskilling your team?
We’ve started with a core of eleven people from across our offices, which can expand to bring in more hands when needed. We have a knowledgeable and experienced team and plan to recruit and grow the team organically over the next 12-24 months.
I recently facilitated a three-day workshop in Melbourne for fifteen of our team members. Some travelled from Brisbane and Newcastle, and other people joined remotely. There is already a solid capability base at ATCW, so I’m focused on leveraging our knowledge and encouraging leadership skills to develop within the team. The feedback so far is very encouraging.
How do you go about recruiting numerical modelling experts?
Right now, it isn’t taught at university as a subject, so undergrads don’t generally learn much about it in their studies. Therefore, we have to find and train people who have an affinity for modelling. The area requires a degree of experience, but younger people are also attracted to mastering it because it is a highly visual tool. I do presentations that generate interest as well.
At ATCW, we apply numerical modelling to many areas of science and engineering, such as hydrogeology, water resources, hydraulic structures, geotechnical engineering, tailings and dams, and waste management.
Along with mentoring the team, have you had a chance to work on projects yourself?
I’ve just completed a static liquefication analysis for an upstream raised tailings storage facility in Western Australia. The analysis presented the client with the likelihood of delaying the need of buttressing the facility in the short term. Our experience makes this possible. My approach is to ‘deliver in a reasonable time for reasonable cost’, which made it very satisfying to complete this one on time and under budget. The client was also happy.
Additionally, we are working on other many other large and complex projects. I didn’t do any modelling in my previous role, so I feel fortunate to have the opportunity to work in this area again at ATCW and develop a group of future leaders in this field.
ATC Williams is a place to excel, and I feel confident that the NMTC will accomplish great work. We have the right team, experience, and full support from the Directors to make it happen. I’m excited to get to the end of the year and see how far we have gone and what we have achieved.
