Skip to content
OTG Hydraulic Design

Sewer and sanitary drainage · Perth and WA

Sewer and sanitary drainage design for your building

Practical hydraulic design for architects, builders and project teams in Perth and across Western Australia. Resolve sanitary pipework, falls, venting and connection requirements as part of a coordinated building design.

Or email admin@otghydraulicdesign.com.au

Plan the drainage before construction

Sanitary drainage needs to work with the building layout, structure and available levels. OTG designs building sanitary plumbing and drainage with the fixture locations, pipe routes and maintenance access considered together.

Engagements can cover a defined drainage package or form part of a wider hydraulic services brief. We confirm the scope and available information before preparing a fee proposal.

What the design can include

  • Sanitary fixture connections and drainage layouts
  • Pipe sizing, falls, stacks and venting for the agreed scope
  • Coordination with structure, service risers and architectural layouts
  • Connection details based on the site information available
  • Documentation and construction-stage support as agreed in the fee proposal

Design is assessed against the applicable NCC provisions and Australian standards for the building. Authority requirements and connection constraints are considered as part of the brief.

Practical experience in the details

OTG brings a practical plumbing background to hydraulic design. Pipe routes, access and set-outs are documented with installation and ongoing maintenance in mind.

Frequently asked questions

Can you design drainage as a standalone package?

Yes. Send the drawings and describe the services you need. We will confirm the drainage scope, deliverables and any interfaces with other consultants.

What information should I send?

Start with the current architectural drawings, fixture schedule, site levels, available connection information and project programme. Let us know about existing services or staged works that affect the design.

Do you carry out the installation?

This page is for hydraulic design and documentation. The fee proposal will define the design service and support required for your project.

Discuss your drainage design

Send the project information to admin@otghydraulicdesign.com.au, call 0436 284 837, or request a fee proposal.

Next step

Request a fee proposal

Send the drawings, the programme and the hydraulic services in scope. We will come back with a clear proposal.