Eastbourne Terrace, London, W2 – Phase 1, Demolition
Eastbourne Terrace, London, W1
Location & Overview
50 Eastbourne Terrace was located on a significant site of 2,500m2 immediately adjacent to Paddington Station and the new entrance to the Crossrail Elizabeth Line. The structures included two three-storey blocks and a 1960s eight-storey tower. One of the low-rise blocks shared a link bridge with a retained office block, all of which were of reinforced concrete construction with a mixture of brick and stone-clad facades. The redevelopment will deliver an eight-storey office building with shops and restaurants at ground level and terraced housing at the rear, and will be of a highly sustainable design, adopting energy-efficient measures such as a green roof, photovoltaic panels, roof terraces, tree planting and the use of rainwater harvested from the roof. Nestling behind the office building, a row of seven new residential townhouses with concealed roof terraces add to the line of the historic mews, which themselves posed a site constraint. Live MEP plant, a UKPN substation with high-voltage service heads pending switchover and decommissioning, two major gas services and comms equipment belonging to BT, all required protection during demolition. Asbestos surveys, soft strip and asbestos removal was undertaken throughout the buildings. Demolition of two three-storey structures, an eight-storey tower block with a link bridge to a retained office block, ground bearing slabs and foundations was carried out using floor-by-floor methodology, with some manual deconstruction, and the use of long-reach excavators for the removal of the link-bridge. Temporary works were installed to enable demolition, including falsework, propping, basement retention, temporary screens and party wall supports, with site-won materials being utilised for the creation of piling mats and berms. The following enabling services were undertaken: bulk excavation, the underpinning of the majority of the site perimeter using pressure-grouting, creation of reinforced concrete crane bases, the pouring of the basement raft slab, drainage and attenuation. CFA piling was carried out at ground floor level to provide foundations for new residential buildings. Design development from RIBA stage 4. The construction of the basement box back to ground floor level, with the liner walls between lower ground and ground floor being poured against existing retained RC walls.