UK Public Sector Contracts & Tenders

We have a security fencing requirement as part of our CTA tunnel main works 1100mm high key clamp rail - 30m + 30m 2400mm high green security mesh - 60m +26m 1200mm high green security mesh - 44m 1500mm high saferoad phoenix alum parapet - 85m total we are talking about 4 types of fence for around 300m length

• WP1: Remove the existing stainless steel top hat channels. • WP2: Test existing sub-frame anchors. • WP3: Survey the existing sub-frame vs. the accepted design and report on work required to remediate. • WP4: Seal side bore duct covers. • WP5: Remediate the existing sub-frame to the accepted design; supply and installation of the cladding top hats; supply and installation of the cladding boards. WP1 to WP4 can be done as early works. WP5 is the main cladding procurement and installation. Programme information recorded herein is relative to WP5 only.

Re - cladding of the main entrance tunnels & side bores @ Heathrow Airport. Materials will be Promat cladding boards with a finish yet to be decided. Metal framework supporting the cladding boards is to a design by SAS. Not envisaged to be a Contractor designed package at this juncture. However input into the design will be required. Approximate area is 13,000m2. The "Early Works" opportunity previously advertised is excluded from this opportunity & will not form part of.

The Fire Compartmentation and Compliance project (scope of this contract) covers the following: • Rectification of existing non-compliant Passive Fire Protection installations • Enable fire compartmentation to be installed to current compliant standards • Associated temporary works (including during construction phasing) The CTA Cofferdam & Station Options Report noted concern that the fire compartmentation within the cofferdam is in poor condition. It recorded that a large quantity (approximately 300 locations) of non-compliant or damaged PFP installations were identified by visual surveys. It noted remedial works need to be undertaken to rectify the non-compliant Passive Fire Protection installations, stating that the Client is looking for the minimum required changes to ensure regulatory compliance and safe operation and maintenance of the fire compartmentation. The scope of works covers Stage 1 (Design) of the Fire Compartmentation and Compliance works, which is split into phases. Stage 2 (Build) will be covered by a separate enquiry.

Demolition The Subcontractor shall strip out and dispose of (unless noted otherwise) the following items, as indicated on the design drawings: • Partitions • Doors • Porcelain tiles • Ceiling baffles and supports (to be stored and reinstalled later) • Glazing • Builders work openings (including necessary modifications to wall framework) • Door penetrations • Column cladding • Screens, chairs, tablets, monitors & desks • Screed (including for cable routes in onward travel area). Regarding the above, consider the following: • The items marked within the "Excluded Scope" document are excluded from this scope and included in another package of works. • The Subcontractor shall ensure that existing fire compartments are not compromised by the works. The Subcontractor shall allow for any intrusive surveys to determine this requirement. Design This section should be read in conjunction with Section 5 (Design) of this document. The Subcontractor shall complete detailed design for the following elements: • Raised access floor • Temporary Works (Hoarding) • Ceilings • Partitions including modification to existing • Doors • Bulkheads • Glazing • Steelwork • Signage Installation The Subcontractor shall supply (unless noted otherwise) and install the following items as indicated on the design drawings and project specifications: • Screed • Hoarding (see section below) • Porcelain tiles • Floor access covers • Ceilings • Partitions including modification works and door infills • Wall finishes, skirtings and trims • Doors • Bulkheads • Glazing • Monolith Base plates (to be free issued to the subcontractor, example provided in the document pack) • Steelwork • Firestopping • Signage and wayfinding?

1) MEP Design 2) MEP install • New Air Handling Unit within plant room including supply and extract ductwork to internal and external (including any modifications to existing louvres), CHW, LTHW and drainage connections. • New or modified supply and extract ductwork, all ductwork ancillaries, plant and insulation. Temporary capping to be provided where required for phasing purposes. • New or modified CHW/LTHW and drainage pipework and insulation. (including design of any associated anchors and expansion devices. • New fan coil units (FCU), condensate pumps and associated condensate drainage. • Reinstallation of any retained FCUs, in Office 1, these FCUs are to be removed in another scope and will be provided to the Subcontractor by the Contractor. The Subcontractor shall allow for recertifying the existing FCUs prior to installation. • Modifications to the smoke extract system, including dampers. • Install the primary Unistrut grid within the retail units • All new or modified containment routes • Small power • Lighting and emergency lighting, including modifications to the lighting power track • Modifications to the modular wiring system

This scope covers intrusive surveys to determine the condition of assets on the Secondary Chilled Water (CHW) and Low temperature hot water (LTHW) systems, specifically the Pressurisation Units (PUs) and Automatic Air Vents (AAVs). Whilst surveying advise on recommended repairs or replacement of other faulty assets via non-intrusive survey (e.g. Dosing Pots, Side Stream Filters, Buffer Vessels and Pumpsets)

This scope covers intrusive surveys to determine the required replacement of faulty and end-of-life water treatment and pre-treatment assets for the condenser water circuits which serve the cooling towers. The scope also covers the survey and design for digital flow meters to be connected to the Honeywell Building Management System (BMS).

Public health concerns have been raised as members of the public have breached atrium barriers at various Heathrow locations, and in some instances resulted in suicide. The aim of these works is to introduce anti-suicide and anti-vandalism measures to deter members of the public breaching barriers in the following locations by adding an extra measure or upgrading the existing barriers: Terminal 2 Entrance & Departure Bridge at Level 5, Train link and Terminal 5 at Level 5, Train link. The scope covers the design of the balustrade enhancements for the Heathrow Terminals T2 and T5 at level 5 only. The design is required to confirm that the existing balustrade system, and structural support has sufficient capacity to support the additional load due to the required changes or employing an extra measure of prevention, where discussed in scope definition report such as arising from the proposed height of the barriers increasing to 2 meters, which may be used as an alternative means to prevent climbing on the balustrade or removing of the balustrade top rails.

This scope covers intrusive surveys to determine the condition of assets on the Secondary Chilled Water (CHW) and Low temperature hot water (LTHW) systems, specifically the Pressurisation Units (PUs) and Automatic Air Vents (AAVs). Whilst surveying advise on recommended repairs or replacement of other faulty assets via non-intrusive survey (e.g. Dosing Pots, Side Stream Filters, Buffer Vessels and Pumpsets)

This scope covers intrusive surveys to determine the required replacement of faulty and end-of-life water treatment and pre-treatment assets for the condenser water circuits which serve the cooling towers. The scope also covers the survey and design for digital flow meters to be connected to the Honeywell Building Management System (BMS).

The scope includes specialist bollard installation in the CTA tunnel at Heathrow. Bollards & Tactile Paving Overview: Part of the Tunnel Accessibility design package, the bollards and tactile paving are intended to make accessing the cross-passage doors safe and more intuitive to use. The bollards are to frangible plastic bolted down into the surface. The tactile paving is to be blister type and adhesive. Interfaces: None beyond standard tunnel working Constraints: Site works during bore closure only Quantities: Bollards: 20no. (4no. Per location) Tactile Paving: 21m2 (4.2m2 per location) Locations: 5no. (includes both sides of CPD)

Drainage Overview: Repairs to the existing drainage in the immediate area outside the tunnel portals. Mostly patch repairs with Cured In Place liner. Some elements of robotic cutter required. Element of regrading required to side bore surface to address ponding issue Interfaces: None beyond standard tunnel working Constraints: Works in carriageway during bore closure only Quantities: CIP Liner: 4no. Robotic Cutter to Remove

The scope includes specialist concrete repairs with sacrificial anode protection. Approx 42no. locations across 2no. undercrofts require sacrificial anode protection and permanent half-cell connection installation. Galvashield XP4 (SIKA product). The works will involve breaking out concrete and then galvanising the rebar underneath to prevent corrosion, this involves casting in special lumps of a more reactive material, that need periodically replacing (10/20years)

We have a security fencing requirement as part of our CTA tunnel main works 1100mm high key clamp rail - 30m + 30m 2400mm high green security mesh - 60m +26m 1200mm high green security mesh - 44m 1500mm high saferoad phoenix alum parapet - 85m total we are talking about 4 types of fence for around 300m length

Soft Landscaping There is a requirement for a subcontractor who can support us with our soft landscaping requirements. Removal of existing undergrowth on embankment side and replanting with hedera hibernica (circa 1150m2). Works include working on steep incline (typically 1:1.6) using fixed line system or similar. Works are immediately adjacent/above services including high pressure fixed fire supression systems and immediately adjacent to live highway traffic and footpaths. Supplier will be responsible for fertiliser, weed suppression mat, irrigation system (inc design) and planting of new vegetation. Please find our GA for soft landscaping Hard Landscaping There is a requirement for some hard landscaping which will include the lay of permeable black tarmac surface for evacuation area, circa 370m2. There is also "road kerb & furniture modification" and a fair amount of edge protection and security fencing. There is a also a road kerb & furniture modification" requirement as well as edge protection which may form part of this package. The scope is still under development

There is a requirement for road marking to support our H7 Renewal main works as part of the CTA tunnel

There is a requirement for a steelworks contractor as part of our H7 Renewals portfolio in the CTA Tunnel: Works will include: - Replacing steelwork - Corroded steelwork treatment - Along undercroft of the tunnel (confined/restricted space) - 5 & half tonne steel in undercroft - Propping side bore from undercroft, swapping out steel - Grouting of baseplates, removing steelwork out - Looking at circular economy/re-purposing steel