Hydraulic engineering

Hydraulic design

Expert hydraulic engineering consultants

Hydraulics is all about clean water supply, efficient usage, and hygienic waste solutions that keep your building’s occupants safe and comfortable. Hydraulic engineering includes designing pipes, plumbing systems, drainage, hot and cold water supply systems, rainwater collection, waste disposal, wastewater treatment, and more. Whether fluids need to be supplied to or removed from a building, an experienced hydraulic engineer can make it happen.

STA Consulting Engineers have decades of experience in building hydraulics, providing practical, functional, compliant and sustainable designs that deliver real value for clients at all stages of the project. Water usage, sustainability, and efficiency in Australia are a priority for governments, businesses, and homeowners alike. They are a priority for us too, and a central part of all our hydraulics designs. That’s why we’re the preferred hydraulic consultants by many councils and builders throughout Queensland and New South Wales.

We provide a full spectrum of building hydraulics services and first-time compliant designs, with experience across residential, commercial, retail, health care, child care, aged care, warehousing, multi-storey apartments, and other sectors. Whatever your hydraulic needs, we’ve got the skills and experience to deliver.

Our hydraulic engineering process

From initial specifications to design and documentation, here's how it works


Your hydraulic team will start by reviewing your specifications to understand the project and what you want to achieve.

Check site and design

We carefully review the site conditions and hydraulic design elements so we can engineer a solution to match.

Engineer design and solution

Next, we engineer the design and hydraulic solution, with clear documentation that's easy to follow.

QA check and review

Before we send through the deliverables, we do a thorough quality assurance check to make sure we haven't missed anything.

Deliver reports and certification

Finally, we deliver the reports and certification via email so that they're ready to be used by onsite project managers and builders.

Why choose us?

Why choose STA for hydraulic engineering?

Full service engineering

STA Consulting Engineers offers full-service engineering. Conveniently work with one company for all your hydraulic, soil testing, geotechnical, foundation, and structural needs and enjoy a smoother, more efficient process.

Experts in hydraulic engineering

With almost 30 years design experience for thousands of Australian builds, we're trusted by hundreds of builders across Australia.

Clear communication

From order placement through to job completion, STA makes it easy for you to track the status of your project(s) so you can plan your workflow and manage your team. With regular updates on projects via optional progress reports, you always know how your design is tracking.

High standards

All of our projects are designed to the highest of standards and backed by our experienced engineers' certification. So you can be confident that your building's hydraulics meet local authority and Australian Standards compliance requirements.
"Compared to previous engineers we'd worked with, STA offered better, more relevant, and more detailed designs. Since working with them, we get a more professional service, with a wider range of support."

Steve Bignill // Construction Manager

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Work with an experienced hydraulic engineering team

Request a quote and we’ll get back to you within 24 hours or call (07) 3071 7444 (QLD) or (02) 4032 6450 (NSW) to chat with our team right away

Our work

Recent hydraulic design projects

Here are some buildings that use hydraulic systems designed by STA


Tell me more about building hydraulic design

What is hydraulic engineering?

As the name suggests, hydraulic engineering is the engineering discipline that focuses on fluid management and flow. Building Hydraulics engineers use both gravity and pressurised means of moving fluids, whether it’s wastewater flowing out of the building, drinking water into the building or diverting storm water flows around and away from the building to stop it from flooding or causing nuisance to property.

Any parts of the building or buildings property that come in contact with fluids – whether pipes, taps, tanks, drains or roof gutters – these are all aspects of building hydraulics that can be designed by a hydraulics engineer.

Some hydraulic engineers work on large-scale projects, like water distribution networks, dams, levees, flood and stormwater catchments, and sewage collection systems. But here we’ll just focus on building hydraulics, as this is our area of specialty.

Why and when is it needed?

Storing, controlling, regulating, measuring, transporting, collecting, and using water doesn’t just happen on its own. You need a hydraulic engineer to develop designs so that your building has the right features to safely and efficiently move fluids.

That’s why it’s important to consider hydraulic engineering early in the planning process. Depending on your project type, this could happen in conjunction with foundation and structural designs or even after the build is complete, if you need to add an additional hydraulic element on.

Examples of hydraulic designs

Some of the features building hydraulic engineers design include:

  • Sanitary plumbing and drainage
  • Articulation joints
  • Sanitary and/or stormwater pipework
  • RPEQ engineer certified pipe articulation
  • Site stormwater drainage
  • Residential and dual occupancy plumbing and drainage
  • Stormwater management
  • Roof water gutter and downpipes (box, eaves, and valleys)
  • Rainwater harvesting and reuse
  • Reticulation systems
  • Hot and cold potable water reticulation
  • Tempered circulating systems
  • Gas reticulation (natural or LP)
  • Trade waste plumbing and drainage
  • Fire hydrant and hose reel coverage assessments (residential or commercial)
  • Assisted ‘wet’ fire service design systems (boosters, tanks, and pumps)

What kinds of projects require hydraulic engineering?

All buildings need plumbing and drainage systems. We’ve worked on a range of project types, including:

  • Residential
  • Dual occupancy
  • Townhouses
  • Age-care facilities
  • Early learning centres
  • Office complexes
  • Warehouses
  • Cafes
  • Sporting complexes
  • Hospitals and health care
  • Multi-residential developments
  • Multi-story apartment projects

What's the average turnaround time for reports and certification?

Times vary depending on scope (single, double, or custom job). When you request a quote, we’ll send through information on expected turnaround times for your project.

Got more questions about hydraulic engineering?

Other services

Soil testing

Foundation design

Structural design

Building inspections

Geotechnical services

Work with an experienced hydraulic engineering team

Request a quote and we’ll get back to you within 24 hours or call (07) 3071 7444 (QLD) or (02) 4032 6450 (NSW) to chat with our team right away