Catherine Field Building
Inspections
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Frame inspection in Catherine Field

The structure, while every washer and grip can still be counted.

  • Once frame and trusses are up and the roof is on, before lining
  • 1 to 2 hours on site
  • Report within 24 hours
Price your Catherine Field inspectionSend the address and where the build has got to.

Fully licensed & accredited

Stage3 of 7
When to bookOnce frame and trusses are up and the roof is on, before lining
Time on site1 to 2 hours on site
Inspected againstAS 1684 (timber framing), AS 4100 or NASH for steel frames, the engineer's bracing and tie-down plan, NCC Part 3.4

What is included in a Catherine Field frame inspection

  • Stud, plate, lintel and beam sizes against AS 1684 and the engineer's drawings
  • Wall straightness and plumb, top plate level
  • Floor level across the slab
  • Bracing type, position and fixing against the bracing plan
  • Tie-downs from roof to wall and wall to slab
  • Triple grips, straps and bolt fixings
  • Jack studs, lintels and trimmers over every opening
  • Window sill trimmers for wide openings
  • Roof truss spacing, fixing and girder connections
  • Valley boards, ceiling battens and roof bracing
  • Window and door openings against the plans
  • Wet area framing, noggings and service penetrations
  • Damaged, split, notched or over-drilled members
  • Termite collars and slab penetrations still visible
Why it matters here

Frame inspections on Catherine Field builds

The frame work nearest to Catherine Field is a lesson in hardware. In Leppington, two and a half kilometres north east, the findings were washers missing from a tie down, triple grips at a truss tie, bracket fixings in the roof framing and a bottom plate overhanging its slab edge by twenty five millimetres, recorded twice. From Austral, further north, come the heavier ones: a connection that does not match the engineering, a steel column not installed, a metal strap required at the top and bottom plates, a bracket and a double stud at an internal beam. The photographs below were taken in Leppington, Oran Park or Austral, between two and eight kilometres from Catherine Field, and each caption names its suburb. We would rather tell you that than let another job pass as a local one.

What we find at this stage in Catherine Field

  • Washers, grips and bracket fixings present
  • Bottom plate bearing correctly at the slab edge
  • Triple grips at the truss ties
  • Connections agreeing with the engineering drawing
  • Steel columns and posts installed and fixed
Bracket fixings in the roof framing, Leppington, Catherine Field
Bracket fixings in the roof framing, Leppington
A second truss tie recorded, Leppington, Catherine Field
A second truss tie recorded, Leppington
Bracing tie down bolt missing, Austral, Catherine Field
Bracing tie down bolt missing, Austral
Sample findings

Sample defects found during our frame inspections in Catherine Field

Annotated findings from Frame inspections on Catherine Field builds. Client addresses withheld.

Missing washers, recorded at a frame inspection in Leppington
Washers missing from a tie down, Leppington
Triple grips at a truss tie, recorded at a frame inspection in Leppington
Triple grips at a truss tie, Leppington
Bottom plate overhang of 25mm, recorded at a frame inspection in Leppington
Bottom plate overhanging by 25 millimetres, Leppington
Steel column not installed, recorded at a frame inspection in Austral
Steel column not installed, Austral

The other stages of a Catherine Field build

  1. Bored piers inspection in Catherine Field1Bored piersAfter boring and cage placement, before concrete
  2. Slab pre-pour inspection in Catherine Field2Slab pre-pourThe day before the pour, steel and formwork complete
  3. Lock-up (pre-plaster) inspection in Catherine Field4Lock-up (pre-plaster)After roof, cladding and external doors, before plaster
  4. Fixing inspection in Catherine Field5FixingAfter mouldings, doors and joinery, before the painter
  5. Waterproofing inspection in Catherine Field6WaterproofingAfter the membrane is applied and before any tile is laid
  6. Pre-handover (PCI) inspection in Catherine Field7Pre-handover (PCI)Two to three weeks before your handover date

All construction stage inspections in Catherine Field →

Guides

Construction stage guides for Catherine Field

All guides →

Book a frame inspection in Catherine Field

Instant online pricing, or talk to the booking team on 1300 471 805.

FAQ

Frame inspections in Catherine Field: common questions

Are washers really structural?

Yes. A bolt through timber concentrates its load onto a tiny area of the timber face. The washer spreads it. Leave it out and the bolt can pull into the timber under exactly the load the connection was there to carry.

What is a triple grip for?

It ties a truss to the top plate, resisting uplift at every truss rather than relying on skew nails. Missing or under fixed grips are one of the commonest tie down failures we see.

Why does a 25 millimetre overhang matter?

The wall frame is then bearing on less concrete than the design assumed, closer to the edge than it should be. It is a measured figure rather than an impression, which is what makes it easy to put to a builder.

What is meant by a connection not matching the engineering?

The drawing sets out one arrangement of members, brackets and fixings and the frame has been built with another. It is a comparison, not a tolerance argument, and the answer is either an engineer's written approval of the alternative or a correction.

How much time do you spend at a frame?

Between two and three hours on a single storey, and more when an upper frame needs safe access.

Do you check them again?

At lock-up, where each item is marked complete, part complete or outstanding so nothing vanishes behind a lining.

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