Published date: 19 November 2018

Closed opportunity - This means that the contract is currently closed. The buying department may be considering suppliers that have already applied, or no suitable offers were made.


Closing: 26 November 2018

Contract summary

Industry

  • Works for complete or part construction and civil engineering work - 45200000

Location of contract

Any region

Value of contract

£1,000,000 to £2,500,000

Procurement reference

C4N42093164

Published date

19 November 2018

Closing date

26 November 2018

Contract start date

4 February 2019

Contract end date

30 May 2021

Contract type

Service contract

Contract is suitable for SMEs?

No

Contract is suitable for VCSEs?

No

Private procurement rules

Supply chain notices are business-to-business transactions and are not bound by the same rules and restrictions as public sector contracts. The UK government is not responsible for the conduct of such procurement.

Description

CVBJV is the main contractor for the East section of the Thames Tideway project.
There are 5 site in total and 4 sites are being done with a jump form system. The Sites address
are:
GREPS
Thames Water Pumping Station
101 Greenwich High Road
LONDON SE10 8JL
DEPCS
Deptford Work Site
Crossfield Street
LONDON SE8 3PH
EARPS
Earl pumping station
Yeoman street
LONDON SE8 5ET
KEMPF
Glamis Road
St Katharine and Wapping
LONDON E1W 3TD
The 4 shafts are drop shafts between the existing sewers on surface and the tunnels
of the new Thames Tideway project. Therefore, they all have a vortex structure, a vortex
generator, and a connection to an interception chamber. Sections and elevations are available
further in this document in Appendix A.
The lower part of the shaft where the tunnels connect will be already built at the time
of the construction. The jumpform system will therefore be used for the construction of the
middle and top part of the shaft.
The supplier will provide a jump form system (called shutter hereafter) to cast the
secondary lining for the 4 construction site's shafts. The formwork for the lower section where
the tunnels connect will be part of a different brief.
The shutter will be a single face arrangement*, suitable to pour 3m lifts, which will allow
the pour of the vortex, and fitted with 3 levels of platforms as described in the section 3.2
Shutter Arrangement.
The shutter will be adaptable to the different diameter of the shafts and the different
dimensions of the vortex.
The shutter will be able to cope with the different sequence of pour of the vortex
generator.
The supply will include:
- The full design, with optional CAT 3 design check, in accordance with the deliverable
in the section 4.2 below.
- All the hydraulic system required for the "jumping" operation. A solution "pulled" from
the top of the shaft, with a strand jack system can be proposed.
- All the guiding system to control and maintain the shutter within the required 25mm
tolerance. Manpower will need to be supplied to supervise the jumping operation, and
the checking of tolerances.
- The design and supply of all the embedded items needed to support the shutter. These
items will have to meet the requirement of the permanent work repair procedure.
- All access within the shutter itself, and working platforms
- All access ladders and access hatches
- All the edge protection including the net/tarpaulin/etc to block the view and/or maintain
a closed environment
- The adapted amount of supervision for the assembly and dismantling of the shutter.
- Spare parts stored on site for the most common failures

More information

Links

About the buyer

Contact name

Gary Peck

Address

Dawson House 5 Jewry Street Aldgate
London
EC32PJ
UK

Telephone

02031477700

Email

gary.peck@costain.com