SERVICES / 04
Stormwater & hydraulic design
Plan how water moves through your site.
A clear engineering scope.
Coordinate water management with the building layout, site levels and available drainage connections.
Each project begins with its own requirements. The work, deliverables and inspection limits should be agreed before the assessment or design starts.
Stormwater strategy
Consider runoff, collection points and the route to a suitable discharge location.
Site drainage
Review levels and drainage requirements in coordination with the proposed development.
Hydraulic coordination
Define the hydraulic design scope and the information needed from the project team.
SERVICE SCOPE
What the work can cover.
The following areas can form part of a project brief. The services, deliverables and suitability for your site are confirmed when the scope is agreed.
Site stormwater drainage
Planning of collection points, pipe routes, surface drainage and discharge arrangements for the proposed development.
Roof & surface water drainage
Coordination of roof-water collection and paved-area drainage with building layout, site levels and landscaping.
On-site detention considerations
Assessment of detention requirements and system design where relevant to the site and authority requirements.
Rainwater collection & reuse
Consideration of rainwater tank integration and reuse opportunities as part of the agreed drainage scope.
Drainage levels & discharge points
Review of available levels, connection information and the suitability of the proposed drainage route.
Hydraulic design coordination
Definition and coordination of the hydraulic design components required for the project.
Drainage drawings & supporting information
Documentation of the agreed drainage design and relevant design information for project coordination.
Existing drainage & alterations
Review of drainage questions arising from extensions, changes to site surfaces or modifications to an existing system.
PROJECT INFORMATION
What to have ready.
Your site and proposal
Provide the property address, a description of the existing building or site, and the work you are considering. Explain whether the enquiry relates to a new design, an existing concern or work already underway.
Available documents
Gather architectural plans, surveys, previous engineering drawings, geotechnical reports, planning advice and relevant photographs. Existing information helps identify gaps before the engineering work starts.
Your priorities
Outline the main questions you want answered, your current project stage and any dates the team needs to coordinate around.
Access and scope
Confirm site access and whether particular structural elements or drainage features are concealed. Inspection, testing, design and construction support may involve different scopes.
DELIVERABLES
Clear information for the next stage.
Depending on the commission, outputs may include engineering drawings, an assessment report, inspection findings or recommendations for further investigation. The quotation should identify the exact documents, review stages and any exclusions, so you know what the engineering work will provide.
PROJECT EXAMPLES
See how this service can apply.
The examples below are placeholders for future SK case studies. They do not represent completed projects.
EXAMPLE PLACEHOLDERResidential drainage
Stormwater design considerations for a new home
- Location
- Replace with the actual project location
- Engineering scope
- Roof water, paved areas, levels and the discharge route
- Outcome
- Add the actual outcome and approved project photographs
EXAMPLE PLACEHOLDERCommercial site drainage
Drainage coordination for a building and surrounding paved areas
- Location
- Replace with the actual project location
- Engineering scope
- Collection points, available connections and detention requirements
- Outcome
- Add the actual outcome and approved project photographs
SERVICE QUESTIONS
Useful things to know.
What is needed to start drainage design?
A survey with levels, architectural plans and information about existing drainage and discharge points are useful starting documents.
Is on-site detention always required?
Requirements vary by location and proposal. The relevant authority’s requirements need to be established for the site.
Can drainage be considered after the building design?
Early coordination is preferable because drainage can affect levels, landscaping and the arrangement of the site.
