Local Officer trades we coordinate with.

Structural engineers — retaining walls over 1m.

Any retaining wall over 1m retained height in Cardinia Shire needs AS 4678 engineer-designed drawings and a Cardinia Shire building permit. We engage a Cardinia-based structural engineer regularly — drawings add $800–$1,500 to a wall job. The engineer specs footing depth, reinforcement, the ag-drain detail behind the wall and the drainage-rock backfill zone. Without those drawings the wall isn’t legal and the insurance won’t cover it. We won’t build a retaining wall over 1m without engineering.

Pool builders — pool-surround paving.

On a new pool build the pool shell, bond beam and coping go in before the pool surround paving. We come in once the pool builder has set the coping levels and signed off the pool fence compliance envelope. Our pavers come tight to the coping line with a 6–10mm flexible joint to allow for thermal movement. R11 / P5 non-slip finish on the immediate pool-edge band (within 1m of waterline) — honed bluestone or sand-blasted sandstone both work, polished or smooth-finished stone never goes near a pool edge.

Landscapers — turf and garden beds.

We specialise in paving, stonemasonry, retaining walls and hardscape — the hard surfaces. We coordinate with two Officer landscapers regularly for the soft side (turf laying, garden bed prep, planting, irrigation). The handover is clean: we hand over at the paving edge with levels correct and edge restraints in — they take over for soil, turf and planting. One quote conversation, two trades, no coordination headaches.

We point homeowners to these resources constantly — particularly the Cardinia Shire crossover spec and AS 4678 retaining-wall documentation, which together account for almost every paving regulatory issue an Officer or Pakenham homeowner will hit.

• Cardinia Shire Council — vehicle crossovers — permit application form, IPWEA-aligned specification, set widths and inspection process for new or replacement driveway crossovers. cardinia.vic.gov.au
• AS 3727 — Pavement design for light traffic — the Australian Standard for residential driveways, paths and pavements. Sets minimum base depth, sub-base compaction, slab reinforcement and falls / crossfalls. Required reading for any paving spec discussion. Standards Australia
• AS 4678 — Earth-retaining structures — the Australian Standard that prescribes design loadings, drainage, geotechnical capacity and reinforcement for retaining walls. On Class M/H reactive clay it’s effectively required from 600mm retained height upwards. Standards Australia
• AS 2870 — Residential slabs and footings — the Australian Standard that classifies reactive-clay sites. Class A, S, M, H1/H2 and E. Most of Cardinia Shire is Class M to H1 reactive clay, which dictates slab reinforcement and footing depth on driveway and retaining work. Standards Australia
• CCAA — Cement Concrete & Aggregates Australia — industry guidance for exposed-aggregate driveways, stencilled concrete, control-joint spacing and curing. The authoritative reference for concrete paving best practice. ccaa.com.au
• AS 4586 & AS 4663 — Slip resistance — the Australian Standards for slip-rating pool-surround and patio paving. P-rating (P0–P5) and R-rating (R9–R13) test methods. P4/R11 minimum on pool surrounds within 1m of waterline. Standards Australia
• Consumer Affairs Victoria — Domestic Builder register — public register of registered domestic builders. Concrete and paving work over $10,000 must be done by a registered builder. Verify before signing. consumer.vic.gov.au

Wall first or paving first?

Wall first — always, where one is involved. The retaining wall sets the base levels for the paving above it and the ag-drain outlet behind it. We need the wall engineering drawings to spec our paving falls and edge restraints relative to the wall, and we need the wall’s sub-soil ag-drain outlet to be in place before any backfill goes in. We won’t start excavating for paving until the wall is signed off.

When does the soil-class check happen?

On the site visit. We dig a 600mm test hole to confirm soil class (Class M or H reactive clay is the local norm in Cardinia Shire), and that determines the base spec, the slab reinforcement and the retaining-wall footing depth. If your block has an existing soil report from the original build we use that; if not the test hole is $0 and takes 15 minutes.

Do we need the crossover permit before quoting?

No — we quote on the driveway design assuming the permit will go through (it almost always does for standard widening or replacement of an existing crossover). If the permit is refused or modified we re-quote at that point. We don’t charge for permit applications that don’t result in a poured driveway.