Pre-Cast Roof Slabs & Parapets

Type of document: Contract Notice
Country: United Kingdom

1. Title: PRE-CAST ROOF SLABS & PARAPETS
2. Awarding Authority: SCS JV, GB. Web: www.scsrailways.co.uk
3. Contract type: Supply contract
4. Description: About the Opportunity:
Detailed design, manufacture and supply of pre-cast roof panels and pre-cast parapets to be installed over a road bridge over rail.
Total roof surface approximate area of 4873m²
Design Durability of the Precast slab is for 120 years
There are Fire testing requirements as per the attached specifications -requirement for fire class including trial panels and fire testing at 90 days of the precast roof slab.
Concrete mix will need to be approved by SCS prior to casting concrete.
The Contractor shall carry out casting of fire testing segments or panels as well as full-scale trial casting including testing of PP-fibre content in fresh concrete in accordance to Austrian Guideline “Erhöhter baulicher Brandschutz mit Beton für unterirdische Verkehrsbauwerke” (or similar method [to be submitted for acceptance]) on at least three samples, this must be agreed with SCS.
Design intent drawing attached.
Key requirements are listed below.
Collaborative review of the SCS design and the delivery strategy of the precast roof slabs prior to fabrication commencing.
Design of lifting anchors / pins and concrete mix to allow lifting chains to be vertical or up to 45-degree angle
Loads of the precast units to be within the lifting capacity of the tower cranes (refer to attached drawing for TC), required impact factor should be accounted for.
Engineering / Quality Control / Workshop drawings of slabs prior and during the fabrication process.
Design and Fabrication of precast slabs including a mock-up to ensure that rebar within the slab has been offset sufficiently to avoid clashes, any cast in embedded elements or openings for permanent and temporary works and slab markings to identify internal and external edges. Design will need to go through SCSJV design assurance process (including CAT 3 check and SCSJV’s Design House (DH) review) for acceptance prior to fabrication commences
Temporary storage at the Supplier’s facilities if need arise from SCSjv, as necessary, of precast slabs prior to delivery to SCSJV site in accordance with the agreed delivery strategy and plan.
Transportation of precast slabs from the Supplier’s facilities to SCSJV site in line with the Environmental Minimum Requirement (EMR) and other relevant standards.
Design and supply of any dunnage required for storage and transportation.
Test casts of the slab types for approval of finishes and concrete colour.
All materials (concrete, reinforcement, tie wire, lifting anchors / pins) used to cast precast roof slabs to be accepted by SCSjv through Material Compliance Record (MCR)
Parapets Scope as follows:
A subcontractor is required for the design, manufacture, and installation of 40 x precast parapets at the HS2 project in Euston London. 1 x mock-up trial panel matching the dimensions of a panel is to be constructed and sent to site for approval prior to the construction of the panels. Temporary lifting points may be cast into pockets in the upper surfaces of the parapet units to assist in the erection process. When the parapet is positioned and permanently supported by the in-situ stitch concrete the temporary lifting point pocket may be filled in with cementitious grout or mortar that is colour matched with the precast parapet unit itself. Temporary works designs to assist in the erection of the panels are to be provided by the subcontractor. The site works will consist of 6 parapets installed under a Network Rail possession due to their close proximity to Network Rail assets adjacent to the site with the remainder installed outside possession. Lifting and mobile crane to be provided by the subcontractor.
The precast parapet panels will have the following approximate dimensions:
2.8m (H) 0.4m (D) 3m (W) (refer to the attached drawings)
Concrete to be of grade C32/40
All steel reinforcement to be B500b
Design and manufacture process to begin January 2023. Site works to begin in September 2023.
Looking at the capacity of Tower Crane B (5.2T at 45m working radius), we won’t be able to install the parapets without a mobile crane
5. CPV Code(s): 44114250, 45262310, 45223500
6. NUTS code(s): UKG, UKG3, UKG31, UKI
7. Main site or location of works, main place of delivery or main place of performance: Delivery point HS2 SCS Main Works, 5A Granby Terrace, Euston, London, NW1 3SA
8. Reference attributed by awarding authority: WP71.6
9. Estimated value of requirement: Estimated contract value (GBP) J: GBP 1m to 2.5m
10. CompeteFor response deadline 3.8.2022 (10:42:00).
11. Address to which they must be sent: Note: This is a CompeteFor opportunity. Opportunities may be with both public and private sector businesses. To apply, please click the following link to register on the CompeteFor portal Web:
12. Other information: Opportunity Method Contract Opportunity
Opportunity Status Open
Opportunity Type Private Sector
Notice Type Notice
Nature of Opportunity Goods
About the buyer’s selection process:
Following responses to this CompeteFor advert, suppliers will be shortlisted and successful suppliers will be invited to a competitive tender for the works and services whereby final selection will be based upon a balanced scorecard assessment. The criteria of this assessment will consider quantitative and qualitative evidence supplied by tenderer’s.
About the buyer:
We are an unincorporated joint venture between Skanska, Costain and Strabag working on HS2 main works civil engineering contract, currently in the early contractor involvement stage for Section 1 and Section 2 of the planned HS2 route. Not only have the individual companies delivered high speed rail, major infrastructure and some of the most iconic structures internationally, the joint venture also has a proven record of working together. Skanska and Costain have a long history of successfully delivering civil engineering projects together in the UK, dating back 30 years. In joint venture they have delivered many major infrastructure projects, including the M25 in the 1980s, High Speed 1 in the early 2000s and the current Crossrail endeavor coming to completion under the streets of London in 2018. STRABAG and Skanska have worked together for over 15 years on European projects in Switzerland, Slovakia and Norway. As a joint venture, we are bringing together our collective strength to deliver world-class engineering, contributing to the long term economic growth of local and international markets. This is perfectly encapsulated in our mission; to draw everyone together to create a strong foundation from which to launch a transformative legacy
Construction Categories
Precast Concrete
Estimated tender close date 13/09/2022
Estimated contract award date 14/11/2022
Estimated contract start date 09/01/2023
Please refer the website above for documentation
TKR-202278-EX-1847888