Rory O’Malley

Hydraulic Principal
Year joined DMA: 2016


Rory has more than 17 years’ experience working in hydraulics services, mainly as a hydraulics designer. A qualified plumbing contractor, he spent the early part of his career working on domestic and commercial projects before moving into hydraulic consultancy where he has gained vast experience in most types of construction sectors. For more than ten years Rory has worked in senior roles, providing team leadership, and gaining valuable technical experience. In his current role he is responsible for managing projects, budgets, schedules and representing DMA Engineers to clients and industry stakeholders.

Rory is highly skilled at hydraulics and fire services design and documentation and BIM services coordination. His estimating skills and attentive plumbing and drainage site inspections ensure accuracy across his projects. He provides transparent fee proposals for all building services and ensures project timelines are met and works well with other trades, contractors and his clients.

Rory provided quality advice and we achieved what we set out to. Professional, experienced, informed – a success.

Ryan Juhas, Kyko Group

Rory O'Malley DMA Engineers Hydraulics Principal

My career highlights:

  • Receiving the 2019 Master Plumbers QLD AHSCA Hydraulic Consultant Design of the Year award, for adopting cutting edge design innovations on a challenging swamp site for a $120 million aged care facility on the Sunshine Coast, while incorporating the latest environmental practices.
  • Leading the Hydraulic and Fire Design on the new Bank of PNG, Port Moresby, Papua New Guinea, which incorporated a high-level security design to protect the building from potential terror threats and used BIM integration techniques to streamline the build and improve coordination.
  • Being published in the Australian Institute of Quantity Surveyors (AIQS), Detailed Building Measurement textbook, used by students studying quantity surveying throughout Australia, contributing a typical domestic residence plumbing and drainage system design case study in Revit.
  • I was the Project Manager for DMA on the University of Southern Queensland’s new Engineering Building development at Springfield, providing a cutting-edge new building for future engineers.
  • 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.

Other select project experience:

• Sullivan Nicolaides Head Office, Bowen Hills (QLD) – Lead Hydraulic Consultant
• STARS / SRACC Development, Herston Brisbane – Lead Hydraulic Consultant
• Mater Hospital and Mater Private Hospital Brisbane (MPBH) Advanced Water Treatment project – DMA Project Manager and Lead Hydraulic Consultant
• Sunshine Coast University Hospital Services – Lead Hydraulic Consultant
• Brisbane Private Hospital (QLD) – CSSD Upgrade – Lead Hydraulic Consultant
• Mater Private Hospital AHU Replacement (QLD) Lead Hydraulic Consultant
• Logan Hospital (QLD) – Maternity, Digitalisation – Lead Hydraulic Consultant
• The Avenue, Maroochydore (QLD) DMA Project Manager & Lead Hydraulic
• Caloundra Christian College (QLD) – DMA Project Manager & Lead Hydraulic
• QUT Creative Industries Precinct 2 & 3 (QLD) Lead Hydraulic Consultant
• USQ Springfield – Block F Engineering Building – Lead Hydraulic Consultant
• Brisbane Markets – Building ‘F’ Fresh Centre – Lead Hydraulic Consultant
• Mercedes Benz Dealership, Newstead (QLD) – Lead Hydraulic Consultant
• Easy Times Brewery (QLD) DMA Project Manager & Lead Hydraulic Consultant
• Lutwyche City Shopping Centre (QLD) – Lead Hydraulic Consultant
• National Cricket Australia Campus (QLD) – Lead Hydraulic Consultant

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 qualifications and accreditations:

  • 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)
  • Victorian Building Authority License DP SD 66046

Professional Memberships:

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



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.