Civil design that resolves the site before it constrains the building.
Site levels, stormwater discharge and on-site detention are usually settled by a consent condition long before the building services are designed — and then quietly determine basement depth, tank position, driveway grade and accessible path compliance. We bring the civil design and the hydraulic design together from the start, because the interface between them is where the avoidable cost sits.
Scope, by project stage.
Stated by stage so you can see exactly what is included at the point you are engaging us — and what is not.
Concept and feasibility
- Site level and grading feasibility
- Stormwater discharge strategy and legal point of discharge
- On-site detention and water quality preliminary sizing
- Driveway grade and vehicle access feasibility
Development Application
- Stormwater concept plan to council requirements
- On-site detention and water quality treatment concept
- Erosion and sediment control plan
- Civil works statement and consent condition review
Construction Certificate
- Detailed stormwater drainage design and calculations
- OSD structure and water quality device documentation
- Earthworks, pavement and site grading design
- Accessible path of travel grading coordination
Construction phase
- Contractor submission review
- Council and authority liaison
- Site inspection and progressive review
- Work-as-executed review and certification support
Three positions we hold on civil.
These are the decisions that determine whether the package works. They are made early, and they are the ones we will argue about.
The consent condition is an engineering constraint, so read it first
On-site detention volume, permissible site discharge and water quality targets are set in the consent and are non-negotiable by the time design starts. We size against them at concept so the tank is in the model before the basement is priced.
Civil and hydraulic are one interface
Where civil and hydraulic sit with different consultants, the boundary — pit connections, charged lines, tank overflow, sub-soil drainage — is where the RFIs cluster. Delivering both removes the boundary.
Grade the accessible path early
Accessible path of travel compliance is a grading problem disguised as an access problem, and it is routinely discovered after the levels are set. It is far cheaper to resolve on a survey than on a poured slab.
Sectors and framework.
Compliance is the floor. Constructability, maintainability and long-term value carry equal weight.
Sectors
Design framework
- AS/NZS 3500.3
- AS 3500 and council DCP stormwater requirements
- Australian Rainfall and Runoff
- AS 1428.1 where grading affects accessible paths
- Relevant council engineering specifications
Recent projects.
Residential, education, student accommodation, hospitality, alpine and industrial projects delivered across Australia.
All projects
Civil Engineering.
Marked up as FAQPage structured data — the correct structure for AI answer engines as well as for search.
Yes — stormwater concept, on-site detention concept, water quality treatment concept and erosion and sediment control, prepared to the requirements of the relevant council DCP.
Yes. A consent review that identifies the OSD volume, discharge constraint and level implications is a short piece of work that regularly changes a feasibility.
Yes, using the modelling package appropriate to the council requirement and the catchment complexity. The specific packages in use are listed on the BIM and digital engineering page.
They are produced by the same team against the same model. Pit connections, charged lines, tank overflows and sub-soil drainage are resolved internally rather than across a consultant boundary.
Usually engaged alongside this.
Hydraulic Engineering
Water, sanitary, stormwater and gas services coordinated to reduce clashes and simplify installation.
Ecologically Sustainable Design (ESD)
Energy modelling, Green Star, NABERS and BASIX pathways that meet targets without inflating capital cost.
BIM & Digital Engineering
Federated models, clash resolution and coordinated documentation that resolve conflict in design rather than on site.
Have a project that needs civil?
Tell us the scope, the stage and the deadline. We will come back with a clear fee proposal.