Balfour Beatty - Roads North of the Thames-LTC - Trenchless Crossings

Contractor will need to take full responsibility for the design and construction, including any required consents/ approvals, constraints and stakeholder management applicable for the various crossings. Works will include, but not be limited to, the following: Launch/ Reception Pit/Shaft Design and excavation, including all appropriate Temporary Works Design and approvals for the launch/ reception pits. Shafts are temporary and does not need to be accessible on completion of the works. HDD Requirements for Design Pricing by contractor • Detail Design of launch and reception pits including relevant calculations to support CD622 application to Highways England. • Detail Design of the pipeline crossing including long sections and explanation/justification for choice of tunnelling method. • Design of all temporary works associated with the installation including relevant checks and approvals. • Design Liaison to support application queries etc. • Mobilization of required plant & material including any associated traffic orders. • Provision of temporary welfare at both work sites for own workforce. • Provision and installation and removal of all temporary works associated with the construction. • Installation of launch pit including plant, labour and materials. • Installation of reception pit including plant labour and materials. • Installation of various trenchless techniques (HDD/ Auger/ Micro) to achieve the desired results, including all as-builts and records. • Supply of PE pipe as required.. • Removal and storage of arisings from excavations. • Disposal of arisings from excavations. • Backfill and reinstatement of excavations. • Removal and disposal of any excess backfill and waste materials resulting from the installation. • Provision of and disposal of all bentonite slurry. • Dewatering.