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411-19-109-PW2 Whangaripo Valley Road Land Subsidence & Retaining Wall Rehab

Details

Tender Closed
RFx ID : 20831375
Tender Name : 411-19-109-PW2 Whangaripo Valley Road Land Subsidence & Retaining Wall Rehab
Reference # : 411-19-109-PW2 Restricted Tender
Open Date : Wednesday, 13 March 2019 1:30 PM (Pacific/Auckland UTC+13:00)
Close Date  : Wednesday, 3 April 2019 10:00 AM (Pacific/Auckland UTC+13:00)
Tender Type : Request for Tenders (RFT)
Tender Coverage : Sole Agency  [?]
Categories :
  • 30000000 - Structures and Building and Construction and Manufacturing Components and Supplies
Regions:
  • Auckland
Exemption Reason : None
Required Pre-qualifications : None
Contact : Sanjay Puri
physicalworks@at.govt.nz
Alternate Physical Delivery Address  :
Alternate Physical Fax Number  :
Agency Address :
Overview

This Request for Tender (RFT) is an invitation to Panel Two members of the Physical Works Panels, to submit a tender for the Whangaripo Valley Road Land Subsidence & Retaining Wall Rehab.
This project comprises three works sites all in close proximity to another and includes two roadside drainage installations and one retaining wall.

Site 1 RP400m - Includes the installation of a deep standard manhole with scruffy dome lid, 450mm RCRRJ culvert pipe crossing the carriageway with a protected outlet and the installation of ‘herringbone’ type subsoil drainage within the roadside shoulder in order to allow free drainage of the perched groundwater table on the northern side of the carriageway.

Site 2 RP500m - The existing retaining wall located within the roadside shoulder on the northern side of the road and supports a large, steep, vegetated batter slope at up to approximately 45º (1V:1H). The wall comprises a two layered gabion basket gravity retaining structure for a length of approximately 48m and has been undermined by scour and is in a failed condition, requiring remediation works. The wall has been in a poor condition for a number of years and replacement works are now recommended. It is proposed to support the existing wall, and embankment above, with a new timber pole retaining structure built immediately in front of the existing wall.

Site3 PR620 – This site follows a similar methodology as the site at RP400, including the installation of a deep standard manhole with scruffy dome lid, 450mm RCRRJ culvert pipe crossing the carriageway with a protected outlet and the installation of ‘herringbone’ type subsoil drainage within the roadside shoulder in order to allow free drainage of the perched groundwater table on the northern side of the carriageway.
This is a single-stage procurement process and will be evaluated using the lowest price conforming method (LPC).
We require a contractor to carry out this project which comprises three works sites all in close proximity to another and includes two roadside drainage installations at RP400m and RP620m and one retaining wall at RP500m.

Utilise the following link, to review the standard RFT terms & conditions, evaluation process, general role descriptions, establishment plans and guidance notes:
https://auth.at.govt.nz/staging/physical-work-supplier-panel-tender-information/

RFx Outcome

This tender has been awarded to:

  • Mason Contractors Ltd

Award Date: Monday, 29 April 2019 (Pacific/Auckland UTC+12:00)
Date RFx was completed/updated: Wednesday, 3 April 2019 11:07 AM (Pacific/Auckland UTC+13:00)