Rory O’Malley

Hydraulic Principal
Year joined DMA: 2016


I’m proud to lead the DMA Engineers hydraulics team. We won the AHSCA Queensland Consultant Design of the Year award in 2019 for our work on the Sundale Garden Village project. .

My professional background

I consider myself to be an outcome-focused individual, with a drive for identifying practical hydraulic solutions for each project. I’ve always had a strong emphasis on being an effective communicator to all parties not only as a hydraulic consultant but also leading the DMA hydraulic team.

I have more than fifteen years’ experience in the plumbing construction industry. For seven of these years I was working as a plumber, drainer and gas fitter and for eight years I have been a hydraulic services design consultant. Over this time, I have worked on projects involving multi-story residential, commercial, retail, health and industrial buildings.

Utilising my previous on-site plumbing knowledge, I bring a practical understanding of the buildability and implementation of hydraulics into every project, ensuring an efficient, cost effective and reliable design solution is achieved for my clients.

My specialisations

  • Shopping centre developments, retail, apartments, large townhouse developments, health, aged care, education
  • Bringing a ‘Real world’ approach to each project
  • Design software: Revit MEP, Navisworks, AutoCad experience
  • Multi-discipline project management
  • Hydraulic services design, documentation and quality control of the following:
  • Gravitational and pump assisted sanitary drainage
  • Trade waste drainage
  • Stormwater drainage and detention systems
  • Rainwater reticulation
  • Roof, gutters and downpipes
  • Cold water supply
  • Domestic, potable and non-potable water
  • Hot water supply including water heating systems
  • Fire hydrant and fire host reel systems
  • LP/Natural gas reticulation including bulk storage.

My key project experience

  • I was the Project Manager for DMA on the University of Southern Queensland’s new Engineering Building development at Springfield.
  • Led the team to painstakingly survey all hydraulic services on the Lutwyche City Shopping Centre project in Lutwyche, Brisbane, while working closely with many different stakeholders invested in the shopping centre. Following the survey, we tied the new services requirements back into the mapped existing hydraulic services while keeping the shopping centre fully operational, helping to bring a tired shopping centre back to its former glory.
  • I was DMA’s lead hydraulic consultant on the certified Six Leaf Environmental Development Sundale Tewantin Retirement Village in Tewantin. We designed complex hydraulic solutions on a challenging existing swap site for a six-stage luxury retirement village. Using my practical onsite plumbing experience, we designed innovative solutions for each stage such as reticulated rainwater reuse systems, one of the first implemented copper silver dosing systems in Queensland to combat the potential of legionella outbreak in the reticulated water system, electric instantaneous hot water units to all RAFC/ILU apartments to save significant internal infrastructure/maintenance costs, and reduced air velocity (RVA) sanitary drainage stacks to save significant space/pipework costs to the contractor. We also design documented the project using BIM integration techniques to streamline the build process and as a result improved coordination issues on site.
  • I was DMA’s Hydraulic lead on McDonald’s Queen Street Brisbane, where we helped to transform the former iconic JoJos restaurant into a modern, standalone flagship store for McDonald’s. Our team designed creative plumbing and drainage systems within the very old and rundown heritage CBD building, over the top of multiple operating existing tenancies.

My qualifications

  • QBCC Hydraulic Services Design Licence (Lic No: 1294729)
  • Diploma of Hydraulic Services Design (Completed 2014)
  • Certificate IV in Hydraulic Services Design (Completed 2012)
  • Certificate III in Construction Services (General Plumbing Trade)
  • Licensed Plumber (Lic No: 25077), Drainer (Lic No: 25077) & Gasfitter (Lic No: L30309)

Awards I have received

Articles I have published

Tackling Legionella: How to assess and minimise your risk

Councils crack down on approvals for temporary site structures and amenities

4 tips for hydraulics designs that will meet your building’s green goals (without breaking the bank)

Australian Institute of Quantity Surveyors (AIQS), Detailed Building Measurement (2015), Volume 2, Dr Rick Best (Bond University), Chapter 13 Hydraulics & Drainage.

Professional Memberships, including any committee positions

  • Associate Member, Association of Hydraulic Services Consultants of Australia (AHSCA QLD. Inc.).
  • Associate Member, American Society of Plumbing Engineers (ASPE)

What creating inner beauty means to me

To me, the most interesting part of any building is the basement. That’s where I believe you can find real inner beauty. Each time a service is engineered through a building, the engineer is placing their own design ‘signature’ seamlessly into the less used spaces. These signatures always tell a really interesting story to me.