Tender: Installation of Precast Concrete Under-Track Crossing (UTX) Chambers and Ducts – NC2A (North Chilterns to Aylesbury) HS2

About

EKFB Joint Venture is seeking a specialist subcontractor to provide management, labour, materials, plant, equipment and supervision to install and hand over a segmented precast concrete Under Track Crossing (UTX) chamber system and adjoining ducts within the NC2A (North Chilterns to Aylesbury) section of HS2, in accordance with the specifications, drawings, HS2 standards and local authority requirements. The UTX system comprises segmented precast chambers and precast covers seated on a precast concrete base; the Contractor will supply and deliver the precast chambers and covers and provide excavation to the UTX duct formation level while the Subcontractor completes excavation for installation. Works include dewatering of excavations, edge protection, protection of existing assets, setting out the UTX using primary control points provided by the Contractor, transferring chambers from the laydown area to the installation point, installing all precast chamber segments and covers onto precast base slabs provided by the Contractor, supplying and installing associated ducting, performing CBGM / cast in situ concrete (minimum FND4) around the UTX and ducts, and testing and handover per approved drawings and manufacturer instructions.