Variation 1, Acoustic enclosure extended to the second transfer point
Boyne Smelters Stockpile Shed: Re-clad & Acoustics · Rio Tinto Aluminium · their reference RTA-VO-4417
Raised 20 Apr 2026 by Marcus Deng · approved 11 May 2026 by Grant Hollows
Scope
Priced off the pricing schedule the contract is measured against.
| Rate | Rate, ex GST | Qty | Value | Cost | Margin |
|---|---|---|---|---|---|
| RS-ACO-ENC Plant acoustic enclosure, fabricate and install | $482.00/m² | 96 | $46,272.00 | $29,765.76 | 36% |
| RS-ACO-BAR Mass-loaded acoustic barrier mat, install | $156.00/m² | 180 | $28,080.00 | $23,914.80 | 15% |
| RS-ACO-ISO Isophonic bracket & resilient mount system | $89.40/m² | 180 | $16,092.00 | $13,300.20 | 17% |
| Total, ex GST | $90,444.00 | $66,980.76 | 26% | ||
| GST | $9,044.40 | ||||
| Total, inc GST | $99,488.40 | ||||
Why it was raised
Rio Tinto's acoustic consultant required the enclosure extended after a boundary reading failed.
Position
- Value, ex GST
- $90,444.00
- Cost to deliver
- $66,980.76
- Margin
- 25.9%
- Physically built
- 86%
- Value already on the ground
- $77,781.84
- 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 20 Apr 2026 by Marcus DengPriced off the project schedule of rates
- Lodged with Rio Tinto AluminiumTheir reference RTA-VO-4417
- Approved 11 May 2026Grant Hollows · added to the contract sum and the open claim