Question:
Attention: The Superintendent / Procurement Officer,

In reference to the tender for the Lake Albert Pipeline Construction (CT2026039), we request formal clarification regarding the boundary between Principal-supplied and Contractor-supplied materials.

Background: Section 1.4.2 (Scope of Works) and Section 1.35.4 (Council Supplied Materials) of the Principal’s Project Requirements state that the Council has stockpiled 5,136m of HDPE pipe for use by the Contractor. The specification further notes that the Contractor is to supply all other materials, fittings, and consumables, including valves, flowmeters, and pressure probes.

Request for Clarification: To ensure an accurate and competitive Lump Sum submission, could the Council please provide the following information: -

1. Principal-Supplied List: A definitive list of all items currently at the five (5) stockpile locations. Does this stockpile consist strictly of pipe lengths, or does it include any pipeline appurtenances (e.g., bends, tees, or stubs)?

2. Appurtenance Responsibility: Please confirm that the Contractor is responsible for the procurement and supply of all pipeline appurtenances, including but not limited to: -

- Bends, air valves, scour valves, stop valves, and flowmeters.

- All jointing consumables (e.g., stubs, electrofusion couplings, gaskets, nuts/bolts, and backing rings).

3. Shortfall Provision: Section 1.35.4 mentions a potential shortfall in pipe quantities. Based on the design chainages (CH540 to CH5670), could the Council confirm the estimated total length of the pipeline to help us calculate the exact quantity of pipe the Contractor must supply beyond the Principal's 5,136m?.

We look forward to your response to ensure our tender submission align with the Council’s requirements.

Answered on 21/Jan/2026 08:02 AM:


Please find the response to the queries dated 19 January 2026:

1. This stockpile consists strictly of pipe lengths only.

2. Confirming 5136m of pipe is the only material to be supplied by the Principal. The Contractor is responsible for the supply of all appurtenances & consumables and all other items required to complete the project.

3. Based on the design chainages, the total length of pipe under this contract is 5130m (CH540 – CH5670), The Principal shall supply 5136m. The design chainages do not allow for offcuts, excess, wastage, curvature discrepancies, etc. Contractors shall make appropriate allowances for shortfall (if any). Variations for additional material resulting from a shortfall will not be considered.

Question:
We would like to request an extension of time. Can you please advise if a revised tender close date of Monday 16 February 2026 is acceptable?

Answered on 03/Feb/2026 10:22 AM:


Unfortunately due to tight timeframes we are unable to grant an EOT for this tender.

Question:
Typical trenching details drawing C2277A 009

- Drawing shows detail "PIPELINE WITHIN PAVEMENT" and another detail "DETAIL BF1 STORMWATER PIPELINE BACKFILL TRAFFICABLE AREAS". The two details differ from each other, which detail is to be used in trafficable areas?

Are the concrete driveways into the businesses along Kooringal Rd considered trafficable and need to follow trafficable backfill details and restored like for like to match existing surface?

- Are the 2x sections within the existing carpark CH1239 - 1344 and CH 1412 - 1492 considered trafficable and need to follow trafficable backfill details and restored like for like (spray seal) to match existing surface or needs to follow the typical trench details including 50mm AC14?

Answered on 05/Feb/2026 12:44 PM:


1. The designers have provided the following clarification:

·
Pipeline Within Pavement detail: Intended for road crossings.

·
Stormwater Pipeline Backfill – Trafficable Areas detail: Intended for driveway crossings and similar trafficable areas.

Contractors shall make allowances to satisfy the above design intent.

2. Concrete driveways are considered trafficable and will need to follow the “Stormwater Pipeline Backfill – Trafficable Areas” detail. Restoration shall be like-for-like to match or improve the existing surface.

3. The sections within the existing carpark CH 1239-1344 and CH 1412-1492 are considered trafficable. Contractors shall follow the trafficable backfill detail with surface restored like for like (spray seal) to match existing surface type. A 50mm AC14 pavement is not required in this car park.

Question:
Could we please request a 2-week extension of time so we can put together a competitive pricing please.

Answered on 03/Feb/2026 02:47 PM:


Due to project timeframes no extensions of time will be granted.

Question:
Hi There,

Can you please advise about disposal about demolition waste e.g. concrete, Asphalt and Excess excavated spoil generate after backfilling.

Thanks

Answered on 09/Feb/2026 11:35 AM:


Contractors may dispose of waste at any licensed recycling or waste facility. Wagga Council operate Gregadoo Waste Management Centre, located at 132 Ashfords Rd, Gregadoo.

Excess clean material generated is generally intended to be spread on site. Where this is not possible, material may be stockpiled at an agreed site along the pipeline.

Question:
Hi

Can we please request your clarifications for the following:

1. NATA laboratory weld testing - How many weld tests are required?

2. Please confirm the Size and thickness of the enveloper pipe for the underbore sections

3. Please confirm the depth of the Air valve (Rural) at CH 2984

4. Please confirm the height of the air valve pit (Rural/Urban)?

5. Height of the surcharge pit to be used in Rural areas

6.Does the air valve pit needs to be precast or cast insitu?

7. Does the concrete surcharge pit needs to be precast or cast insitu?

8. Location for disposal of the excess spoil

Answered on 09/Feb/2026 04:15 PM:


1. Weld testing shall be undertaken in accordance with the Polyethylene Pipeline Code WSA 01 – 2004 and PIPA Industry Guidelines POP014 – Assessment of Polyethylene Welds.

Each weld shall be visually tested in accordance with QA procedures. Destructive testing is not expected unless an issue arises.

2. The design allows for a contractor to make their own assessment of the optimal construction methodology for trenchless installation. Items such as size and thickness of the enveloper pipe may be nominated by the Contractor to suit their preferred methodology. IFC drawings reflecting the selected methodology will be issued prior to trenchless works commencing.

Contractors shall nominate any design requirements to support their preferred methodology in the tender submission.

3. Please see attached updated drawing, noting 1.38m to invert.

4. Air valve pits shall be constructed to suit the depth of invert, refer to long sections.

5. Surcharge pit shall be constructed to suit the depth of invert of the adjoining scour valve pit. Refer to long sections.

6. Air valve pits can be pre-cast or cast insitu.

7. Surcharge pits can be pre-cast or cast in-situ.

8. Excess clean material generated is generally intended to be spread on site. Where this is not possible, material may be stockpiled at an agreed site along the pipeline.

Question:
Hi

Does the contractor need to supply the PE bends?

Answered on 09/Feb/2026 08:54 AM:


Yes, the contractor shall supply all materials and consumables (including bends) excepting the provided lengths of straight pipe. Any additional pipe required to complete the project shall also be supplied by the Contractor within the lump sum price.

Question:
Hi

It is difficult to construct with the 20m length pipes in the urban area due to limitation of the work area available for construction. Will it be possible for the council to provide 12m lengths of pipes instead of 20m lengths?

Answered on 09/Feb/2026 10:02 AM:


The pipes have been ordered in the amounts stated in the Tender documents.

Question:
Hi

Will the enveloper PE pipes for the underbore (trenchless crossings) provided by the council or contractor to supply?

Answered on 09/Feb/2026 11:39 AM:


Other than the lengths of pipe provided by Council, the contractor is to provide all materials, including enveloper pipe for the trenchless crossings.

Question:
Hi

Will the contractor need to arrange for a crane/franna to load/unload pipes at the stockpile areas?

Answered on 09/Feb/2026 11:49 AM:


The contractor will be responsible for managing material distribution from the stockpile areas. The contractor may select any equipment that can safely complete the task.

Question:
As per item 3.6 of the price schedule only 9 x 45 deg bends are required to be priced. As per the drawings there are additional vertical and horizontal bends required. Where (item no.) does the price for these additional bends need to be included?

Answered on 09/Feb/2026 11:57 AM:


Any items or extras that the Contractor believes should be clarified in the schedule may be added as a new line to the schedule.

Contractors may modify the schedule, within reason, to ensure clarity of quoted price.

Significant changes or omissions that materially alter the schedule may be deemed non-confirming.

Question:
Hi

Is the contractor responsible for any design?

Answered on 09/Feb/2026 12:15 PM:


This is a Construct only contract.

The design allows for a contractor to make their own assessment of the optimal construction methodology for trenchless installation. IFC drawings reflecting the selected methodology will be issued prior to trenchless works commencing.

Contractors shall nominate any design requirements to support their preferred methodology in the tender submission.

Question:
Hi

Can you please confirm if the contractor is responsible for the insurance for the free issue pipes from the council. If yes, what is the amount to be assumed as cost of the pipes?

Answered on 09/Feb/2026 12:30 PM:


Council will arrange appropriate insurance for the pipes while the pipes are in Council’s possession.

The Contractor shall be responsible for the free issue pipes upon taking possession of the pipe.

Pipes are considered to be in the Contractor’s possession upon the earlier of either:

1) The Contractor loads/unloads the first pipe in a stockpile, or

2) The Contractor takes possession the paddock containing stockpiled materials.

The tender for the supply of the pipes to Council was awarded for $643,365.88+GST.

Question:
Hi

Item 4.1 of the price schedule (BoQ) includes the length of the underbore pipes. Do we need to deduct the underbore pipe lengths in this line item?

Answered on 09/Feb/2026 12:29 PM:


Contractors shall make allowances as appropriate to provide an accurate price, noting some underbore pipes have enveloper sleeves and some do not.

Question:
Hi

Ca you please confirm the weight of the 12m and 20m pipes?

Answered on 09/Feb/2026 03:35 PM:


Iplex PN10, DN450 polypipes have an average weight of approximately 36kg/m.