Commercial
Car parks
The bays, aisles and overflow areas that make up most of your impervious area. Treating the storm where it lands is usually cheaper than piping it to a tank in the low corner.
WHAT WE DO
Nine places the storm stops being your problem.
Domestic
Driveways
Crossovers, driveways and hardstand on a single allotment. The usual trigger is a stormwater condition on a knock-down rebuild, and a 100 mm surface on a drained base clears it.
Civil
Footpaths and streetscapes
Paths, verges, plaza paving and shared zones. A permeable surface keeps water in the root zone of the street trees instead of sending it straight to the kerb.
Arboricultural
Tree Protection Zones
Paving inside a TPZ under AS 4970, built no-dig so the structural root zone is never excavated or compacted. We work to the radius the arborist nominates, not around it.
Commercial & Domestic
Sports courts and surrounds
Courts, run-offs and spectator areas that have to drain fast and be usable straight after a storm. No crossfall to a pit, and no puddle sitting on the baseline.
Industrial
Civil infrastructure
Access lanes, depot hardstand, maintenance aprons and the drainage reserve around them. Designed to the traffic and the catchment, not picked out of a catalogue.
Industrial
Aprons and hardstand
Large, flat, heavily conditioned areas where surface water has nowhere useful to go. The storage lives in the base, under pavement the site already needed.
Domestic & Commercial
Excavation and sub-base
Bulk excavation, subgrade preparation and the washed open-graded base that does the actual storing. Get this layer wrong and the surface above it cannot save you.
Professional
Placement and finishing
Supply, placement, compaction and curing by crews who pour permeable every week. The narrow window on water content and curing is where most failures start.
THE SPECIFICATION
The numbers your consultant will ask for.
| Property | Typical range | Notes |
|---|---|---|
| Surface thickness | 100 to 150 mm | Set by the traffic the pavement has to carry |
| Void content, surface | 15 to 25% | By volume, through the full depth of the layer |
| Infiltration, new surface | 2 to 5 L/s/m² | Drops over time with sediment, restored by sweeping |
| Wearing surface strength | 25 MPa and above | Supplied and tested to AS 1379 |
| Surface aggregate | 7 to 10 mm | Single sized, to AS 2758.1 |
| Sub-base depth | 150 to 300 mm | Set by the storage the catchment has to hold |
| Sub-base aggregate | 20 mm washed | Open graded, roughly 30 to 40% voids |
| Subgrade | In situ | Left uncompacted where infiltrating, lined and drained on reactive clay |
These are the ranges a permeable concrete pavement usually lands in. They are not a specification for your site. The real build comes out of the geotechnical report, the traffic, and the volume your catchment has to hold, which is exactly what a spec review produces.
HOW A JOB RUNS
Four steps, and you can stop after the first.
Spec review
Thirty minutes with an engineer. Bring the drainage plan, the geotechnical report if you have one, and the council condition you are trying to clear. If permeable is the wrong answer for your site, this is where we say so.
Design and modelling
We hand your civil consultant the infiltration rate, void ratio and layer build to drop into a MUSIC node against the State Planning Policy objectives, plus the drainage detail your council checks against the FNQROC Design Manual.
Build
Excavation, subgrade preparation, the washed open-graded base, then the pour. Placement, compaction and curing by a crew that places permeable every week.
Handover
Infiltration tested on the finished surface, and a maintenance schedule the owner can actually follow. Sweeping intervals, not a lecture.
THE NEXT STEP
Send us the site. We'll talk drainage.
Bring the drainage plan, the geotechnical report if you have one, and the number your council reviewer flagged. Thirty minutes with an engineer, not a sales call.