Each new dwelling needs its slab and footings designed from a site classification that reflects the ground where it will sit. On an Oxley infill or townhouse lot, the footprints can be spread across the block, so we position the boreholes and DCP tests near the proposed footing areas rather than in one convenient spot. Tell us how many dwellings are planned and send the site plan, and we will scope the testing so your engineer has data for each building footprint.

Much of eastern Oxley was flooded by Oxley Creek in January 2011, over an area only slightly smaller than in 1893. That record does not describe any single street, but it is a reminder that creek floodplain ground can be variable, with younger and older alluvial deposits found across Queensland floodplains. That is why our classification pairs soil reactivity results with DCP bearing tests rather than relying on one measure. Your engineer uses both to size and place the footings for the new building.

It can. Oxley Creek flooded much of eastern Oxley in January 2011, while the higher western streets sat further from the creek corridor. That difference shows up on the Brisbane City Plan flood overlay, which is what your designer and certifier work from, rather than in any general rule about a street. The site classification itself does not change with the overlay, because it describes how the soil at your footing area reacts to moisture. What changes is the design brief around it, so confirm the overlay result for an eastern lot before the engineer begins.

Not reliably. The engineer needs a current AS 2870 classification of the ground where the new footings will go, because the site class drives the slab and footing design. A rebuild footprint often differs from the old house, and on established lots near the station it may sit close to existing services and a driveway. We place the test holes at the proposed footing area and report bearing results alongside reactivity. Send the demolition and new site plans together so we can scope the positions early.

Oxley's older streets near the railway station and shops saw residential development in the early 2000s, so many lots there already carry a house, driveway and services. A new estate lot is usually a cleared pad; an established Oxley lot is a site where the new footprint has to fit among existing structures. That is why we drill at the actual proposed footing area, so the site class your engineer receives describes the ground under the new building.

The site plan showing each proposed townhouse footprint is the most useful document, because each building's slab and footings are designed from the site class where it sits. Townhouses and semi-detached homes made up 15.9% of Oxley dwellings in 2021, and owners of standard lots may be weighing a similar project. Mark any existing house, driveway or old services you plan to keep, so the test positions can work around them. With that, we set out the testing so your engineer has data for every footprint.

Book it before the engineer starts on the slab and footings, because the site class under AS 2870 drives that design and the report is needed before design and approval. On an Oxley infill or rebuild job, it helps to have the proposed building footprint and the lot's flood overlay result checked first, so the boreholes go in the right place and the designer has everything together. Call us early in planning and we will work around your design program.