Pakenham Building
Inspections
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Slab pre-pour inspections in Pakenham

Steel, chairs, ties and vapour barrier, checked while every bar can still be lifted and moved.

  • Steel tied and formwork up, the day before concrete
  • About 1 hour on site
  • Report within 24 hours
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Fully licensed & accredited

Stage2 of 7
When to bookSteel tied and formwork up, the day before concrete
Time on siteAbout 1 hour on site
Inspected againstAS 2870, AS 3600, NCC Part 3.2, the engineer's slab design and the soil report

What is included in a Pakenham slab pre-pour inspection

  • Mesh supported on chairs at the right height
  • Edge beam steel on proper supports
  • Lap lengths at joins in the mesh and bars
  • Ties at laps, corners and crossings
  • Vapour barrier lapped, taped and down to ground
  • Beam widths and depths against the plan
  • Trenches clear of soil and offcuts
  • Plumbing risers capped and lagged
  • Pods spaced and held in place
  • Formwork straight, braced and complete
  • Termite collars at penetrations where fitted
  • Set out compared with the slab plan
  • Recesses for wet areas in position
Why it matters here

Slab pre-pour inspections on Pakenham builds

The slab items that matter most are about where the steel ends up in the concrete. Mesh without enough chairs gets walked flat during the pour, short laps leave a weak line, and untied bars move as concrete goes in.

What we find at this stage in Pakenham

  • Not enough bar chairs under mesh and edge beam steel
  • Sprayed on supports where proper chairs were needed
  • Reinforcement left untied at laps and corners
  • Vapour barrier short of ground level in the beams
  • Soil and offcuts left in the trenches
Plumbing riser left uncapped in the slab set out, found during a slab pre-pour inspection in Cranbourne East
Plumbing riser left uncapped in the slab set out, Cranbourne East
Loose bars at a beam corner that could shift as concrete goes in, found during a slab pre-pour inspection in Cranbourne East
Loose bars at a beam corner that could shift as concrete goes in, Cranbourne East
Edge beam trench where the barrier does not reach the ground, found during a slab pre-pour inspection in Cranbourne East
Edge beam trench where the barrier does not reach the ground, Cranbourne East
Sample findings

Sample defects found during our slab pre-pour inspections in Pakenham

Annotated findings from Slab pre-pour inspections.

Edge beam steel short of bar chairs, putting concrete cover at risk, found during a slab pre-pour inspection in Cranbourne East
Edge beam steel short of bar chairs, putting concrete cover at risk, Cranbourne East
Slab mesh needing more supports to hold it at the right height, found during a slab pre-pour inspection in Cranbourne East
Slab mesh needing more supports to hold it at the right height, Cranbourne East
Reinforcement not tied at laps and crossings before the pour, found during a slab pre-pour inspection in Cranbourne East
Reinforcement not tied at laps and crossings before the pour, Cranbourne East
Vapour barrier stopping short of ground level in the edge beam, found during a slab pre-pour inspection in Cranbourne East
Vapour barrier stopping short of ground level in the edge beam, Cranbourne East

The other stages of a Pakenham build

  1. Bored piers inspection in Pakenham1Bored piersHoles drilled and cages set, concrete not yet ordered
  2. Frame inspection in Pakenham3FrameWalls standing and trusses on, before wrap and windows close it in
  3. Lock-up (pre-plaster) inspection in Pakenham4Lock-up (pre-plaster)Roof, windows, external doors and cladding on, before plaster
  4. Fixing inspection in Pakenham5FixingLinings, joinery and doors in, painters not yet started
  5. Waterproofing inspection in Pakenham6WaterproofingMembrane on and cured, tiler not yet booked
  6. Pre-handover (PCI) inspection in Pakenham7Pre-handover (PCI)About a week before the handover meeting

All construction stage inspections in Pakenham →

Guides

Construction stage guides for Pakenham

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Book a slab pre-pour inspection in Pakenham

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FAQ

Slab pre-pour inspections in Pakenham: common questions

Why do bar chairs matter?

They hold the steel at the right height so the concrete covers it properly. Steel that sits too low has too little cover and can corrode.

What is a lap?

Where two pieces of mesh or bar overlap. The overlap has a minimum length so the steel acts as one piece.

Do the ties really matter?

Yes. Untied steel shifts when concrete is poured and vibrated, so it ends up somewhere other than where it was designed to be.

How far ahead should I call you?

A day is usually enough. Tell us as soon as the pour date is set.

What standard do you check against?

AS 2870, AS 3600 where it applies, and the engineer's slab design.

Is any of it checkable once concrete is in?

Only the surface. Everything inside the slab is final.

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