Variation 3, Membrane to the western gutter run
Boyne Smelters Stockpile Shed: Re-clad & Acoustics · Rio Tinto Aluminium · their reference RTA-VO-4451
Raised 9 Jul 2026 by Marcus Deng
Effect of approval
These lines join PRJ-2026-038's schedule of rates. With 60% of the work already in place, the value of work in place moves with the contract sum, the open progress claim measures the difference, the job's margin recalculates, and an acknowledgement is issued to the head contractor.
Contract sum
$2,650,824 → $2,679,912
Work in place
$2,050,266 → $2,067,719
Next claim
$0 → $17,453
Margin on PRJ-2026-038
15.2% → 14.6%
Scope
Priced off the pricing schedule the contract is measured against.
| Rate | Rate, ex GST | Qty | Value | Cost | Margin |
|---|---|---|---|---|---|
| RS-WPF-MEM Liquid-applied weatherproof membrane | $162.00/m² | 128 | $20,736.00 | $41,451.52 | -100% |
| RS-WPF-SEA Sealant to laps, penetrations & flashings | $34.80/lm | 240 | $8,352.00 | $6,631.20 | 21% |
| Total, ex GST | $29,088.00 | $48,082.72 | -65% | ||
| GST | $2,908.80 | ||||
| Total, inc GST | $31,996.80 | ||||
Why it was raised
Existing box gutter found perforated; liquid membrane applied rather than replacement.
Position
- Value, ex GST
- $29,088.00
- Cost to deliver
- $48,082.72
- Margin
- -65.3%
- Physically built
- 60%
- Value already on the ground
- $17,452.80
- Work commenced
- Yes, under site instruction
Contract
- Project
- PRJ-2026-038
- Contract no.
- RTA-BSL-SC-88104
- Head contractor
- Rio Tinto Aluminium
- Approver
- Grant Hollows
- Payment terms
- 45 days EOM
Trail
- Raised 9 Jul 2026 by Marcus DengPriced off the project schedule of rates
- Lodged with Rio Tinto AluminiumTheir reference RTA-VO-4451