Donnybrook Building
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Bored pier inspection in Donnybrook

Where the engineering specifies piers, the only chance to check them is between boring and concrete.

  • Once holes are bored and cages placed, ahead of any concrete
  • About 1 hour on site
  • Report within 24 hours
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Fully licensed & accredited

Stage1 of 7
When to bookOnce holes are bored and cages placed, ahead of any concrete
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 Donnybrook bored piers inspection

  • Pier positions and spacing against the footing plan
  • Pier diameter checked at the top of each hole
  • Depth against the engineer's design and the soil report
  • Founding material at the base where visible
  • Reinforcement cage size, laps and starter bars
  • Cover to the cage and centralisers
  • Hole cleanliness, spoil and loose material
  • Standing water or seepage before the pour
  • Steel projection into the slab or beam
  • Termite and service penetrations near piers
  • Set-out against the site plan and boundaries
  • Records and photographs for the engineer where required
Why it matters here

Bored piers inspections on Donnybrook builds

Pockets of the northern corridor carry fill and variable ground. Where piers are specified, the depth on the drawing is the figure that has to be achieved.

What we find at this stage in Donnybrook

  • Depth short of what the engineering specifies
  • Cage off centre so cover is uneven
  • Water or spoil sitting in the base
  • Cage not resting where it should
  • Diameter varying between piers
Sample findings

Sample defects found during our bored piers inspections in Donnybrook

Annotated findings from Bored piers inspections on Donnybrook builds. Client addresses withheld.

Bar chairs needed to hold reinforcement at the correct height, recorded during a slab pre-pour inspection in Donnybrook
Bar chairs needed to hold reinforcement at the correct height

The other stages of a Donnybrook build

  1. Slab pre-pour inspection in Donnybrook2Slab pre-pourThe day before the pour, with pods, steel and formwork still open
  2. Frame inspection in Donnybrook3FrameAfter frame and trusses are up and the roof is on, before sarking
  3. Lock-up (pre-plaster) inspection in Donnybrook4Lock-up (pre-plaster)Once roof, cladding and external doors are on, before plaster arrives
  4. Fixing inspection in Donnybrook5FixingAfter mouldings, doors and joinery, before the painter
  5. Waterproofing inspection in Donnybrook6WaterproofingOnce the membrane is on and cured, before tiling starts
  6. Pre-handover (PCI) inspection in Donnybrook7Pre-handover (PCI)About a week ahead of your practical completion date

All construction stage inspections in Donnybrook →

Guides

Construction stage guides for Donnybrook

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Book a bored piers inspection in Donnybrook

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FAQ

Bored piers inspections in Donnybrook: common questions

How long is the visit?

Under an hour on a standard residential lot.

What if concrete has gone in?

Then there is nothing to inspect. This is the most time critical stage on the list.

Do you certify them?

No. We report against the drawing. Certification belongs to the engineer.

Does every lot here need piers?

No, many are a waffle raft slab with none at all.

Measured against what?

Your engineering drawing and AS 2870.

Should I come along?

It is a good one to attend, since everything is still open to view.

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