Concreters Wilberforce

Yes. We build driveways and crossings, shed slabs, hardstand, retaining walls, pool surrounds and outdoor areas for properties in Wilberforce and the surrounding district, including Freemans Reach, Ebenezer, Windsor and Pitt Town.

Yes. If council’s flood advice sets a minimum floor level, we build and compact a raised pad to that height, form and pour the slab on it, and ramp the approach. Get the property’s flood advice from council first and send it with your quote request.

Yes. Wilberforce is in the Hawkesbury local government area. Before any work starts on the crossing between the road and your boundary, the owner or contractor has to lodge Hawkesbury City Council’s Agreement Form for Driveways with the required fee. Council also requires the contractor to carry public risk insurance with a minimum cover of $20 million and to show evidence of it before starting.

A minimum compressive strength of 25 MPa at 28 days in accordance with AS 3600. A residential crossing is a minimum 100 mm of concrete with a single layer of SL72 mesh; heavy duty is a minimum 150 mm with two layers. Reinforcement sits on bar chairs at a maximum of one metre spacing, about 25 mm below the finished level, and council inspects once with the formwork and steel in place, on 24 hours notice.

Only within limits, and only if your land is flood affected in the first place. On the most hazardous flood-affected land, council’s controls say importation of fill and excavation are not permitted other than a balance of cut and fill to create a level building platform or driveway access, and that cut and fill must not exceed one metre of cut or one metre of fill. A shed or other non-habitable structure must not be erected on that land below 0.3 metres under the Flood Planning Level, rising to 1.2 and 2.0 metres in the less hazardous categories. Council’s Flood Advice gives you the Flood Planning Level for your property in metres AHD, and an accurate ground level needs a survey by a registered surveyor.

It depends on the length, how much excavation and base preparation the ground needs, whether an old surface comes out, the crossing at the road, and the finish. On the floodplain it can also depend on how much earth you are permitted to move. The accurate number comes from seeing the site, and quotes are free.

Council’s specification is the floor: where the subgrade material is unsatisfactory it has to be removed and replaced with a minimum of 150 mm of approved sandstone or road base, and on a non-granular subgrade the slab is placed on a 25 mm layer of sand. Beyond that, a site classification under AS 2870 comes from a geotechnical soil test on your block, not from a suburb map.

It changes the scheduling more than the concrete. The flood plan has Wilberforce evacuating early — in Level 1 operations — and the SES points out that in this valley there may be only a few hours warning between heavy rainfall and an evacuation order. We watch the forecast before committing trucks, because a load that can’t reach the site is a wasted day for everyone.

Yes. Southo Concrete holds NSW contractor licence 398552C and a general construction induction white card, and carries $20 million public and product liability cover plus workers insurance. Certificates of currency are available on request, along with SWMS where a site needs them, and we can complete site inductions as required.

We use high-quality materials and proven construction methods to help ensure our work lasts for 25 years or more. We also use appropriate materials and techniques to control cracking in our slabs, helping to keep it very limited, if not eliminate it altogether. Please note that cracking can be affected by factors outside our control, including ground movement, weather and site conditions.

No. We take on complete jobs — driveways, shed slabs, hardstand, retaining walls, pool surrounds and outdoor areas — where we control the work from excavation through to finish. We don’t do small patch-up repairs.