Greenbank Building
Inspections

Bored pier inspection in Greenbank

Depth, width and clean bases are checked while every hole is open on the Greenbank ground.

  • Once the holes are dug, before the concrete pour
  • About 1 hour on site
  • Report within 24 hours
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Fully licensed & accredited

Stage1 of 7
When to bookOnce the holes are dug, before the concrete pour
Time on siteAbout 1 hour on site
Inspected againstAS 2870, AS 3600, the geotechnical report and the engineer's footing design

What is included in a Greenbank bored piers inspection

  • Each pier location matches the footing plan
  • Hole size measured at the base
  • Depth compared with the design figure
  • Soil at the bottom is firm and clean
  • Founding material checked against the soil report
  • Water level in the hole noted
  • Rebar dimensions and bar count
  • Cage supported centrally with spacers
  • Concrete cover on all sides
  • Bored pier positions recorded
  • Entry access and edge safety noted
  • Any incomplete work listed
Why it matters here

Bored piers inspections on Greenbank builds

Piers are needed for many builds in Greenbank where the soil is shallow or where water table levels are high. Newer homes in the New Beith and Spring Mountain areas sometimes sit on fill that is not compacted. The common failings here are holes not cleaned before the concrete arrives, or steel cages placed in the wrong position.

What we find at this stage in Greenbank

  • Water found in excavation bottom
  • Loose material left in the base of the hole
  • Cage sitting off centre in the hole
  • Depth short of the engineer's design
  • Position misaligned from the drawings
Timber wall overhang exceeds 10mm, recorded during a slab pre-pour inspection in Narangba
The timber frame bottom plates overhang the concrete slab by more than ten millimetres, Narangba
Sample findings

Sample defects found during our bored piers inspections in Greenbank

Annotated findings from Bored piers inspections.

Slab protrudes beyond timber wall by over 20mm trim the slab, recorded during a slab pre-pour inspection in Greenbank
The concrete slab extends beyond the timber frame, reducing the cavity width and risking moisture problems
Installed partially, recorded during a slab pre-pour inspection in Greenbank
The item was not fully installed and needs to be completed
Wall overhang exceeds 10mm, recorded during a slab pre-pour inspection in Yarrabilba
Bottom plates overhang the slab by more than 10mm which may cause structural issues, Yarrabilba
Extension required, recorded during a slab pre-pour inspection in Yarrabilba
Concrete under the wall frame prevents the plaster from sitting correctly, Yarrabilba

The other stages of a Greenbank build

  1. Slab pre-pour inspection in Greenbank2Slab pre-pourBefore the concrete arrives, once the mesh is laid
  2. Frame inspection in Greenbank3FrameFrame and trusses standing, roof sheeted, before linings
  3. Lock-up (pre-plaster) inspection in Greenbank4Lock-up (pre-plaster)Cladding, windows and rough-in complete, before plaster
  4. Fixing inspection in Greenbank5FixingJoinery, doors and trims are checked before painting begins.
  5. Waterproofing inspection in Greenbank6WaterproofingMembrane inspection before tile work
  6. Pre-handover (PCI) inspection in Greenbank7Pre-handover (PCI)Book a final inspection before handover

All construction stage inspections in Greenbank →

Guides

Construction stage guides for Greenbank

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FAQ

Bored piers inspections in Greenbank: common questions

How much time does a pier visit need on a Greenbank lot?

About an hour for most lots. More time is needed if there are many piers or holes are deep.

What if the hole contains water?

Water must be removed or pumped out. You cannot pour concrete into a wet hole. It will weaken the pier.

How dirty is the slab underneath?

The cage and concrete sit on the bottom. Loose rock or clay changes the engineering design. The pier will not sit on the correct founding material.

Do I need engineering drawings for piers in Greenbank?

Yes. The depths, diameter and cage spacing are written on the drawings. We check the site against these drawings.

Is this the same as a certifier's inspection?

No. The certifier checks that work meets the QBCC Standards and Tolerances Guide. We check the hole for you.

What happens if the steel cage is wrong?

We note the position and size. The builder must fix it before concrete is poured. The hole is then rechecked.

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