Case Study // Oriana

Project Oriana II was located to the East end of Oxford Street adjacent to Tottenham Court Road Station. South of the site housed an extension of the original Oriana which was developed around 2 years ago – forming Primark’s flagship store. As a result, significant temporary works were installed to ensure that Primark’s operations remained undisturbed.

Oriana II was a complex project which involved the demolition of 26-48 Oxford Street and 55 Hanway Street; this incorporated façade retention of a number of buildings. The redevelopment comprised part retained facades, part new build and part remodelling of a grade II listed building to create retail space at the basement through to the 6th floor.

The existing buildings were a mixture of architectural styles, varying in age from a 19th century bay window four storey building within an original butterfly roof, to the newest building built in the 1960’s. One of the structures was previously the famous Frascati restaurant and before that an 18th century brewery site; its existing statue showcased some of the original Frascati features.

The buildings which required façade retention were built in the 1920’s, constructed using a range of tripartide stone, red stone and beaded windows.

48 Oxford Street had a retention system over a gantry on Oxford Street, but due to the narrow width of Hanway Street, this section had to have the retention system constructed within the fabric of the building.

All of the temporary works were Contractor designed, with Erith utilising their internal design company, Swanton Consulting for all design matters.

Erith’s scope incorporated the following:

  • UKPN diversion beneath the level of the building basements
  • Temporary weatherproofing to exposed party walls and floor slab over part of the Primark store
  • Provision of a site hoarding
  • Scaffold Erection
  • Demolition of 26-48 Oxford Street and 55 Hanway
  • Installation of a series of façade retention schemes
  • Investigation works
  • Asbestos surveys
  • Protection of basement sub-stations

A 180° tower crane with a 40m jib was erected in the centre of the site in a ‘well hole’ formed by local demolition within an existing light well. Two buildings (44 and 46 Oxford Street) had to be demolished early on in the contract, with a road crossing constructed from Oxford Street to allow a 160 tonne mobile crane to be set up in the footprint of the 2 demolished buildings.

Back-propping to the floors was placed throughout the buildings prior to the demolition. This was carried out with a combination of 3Tonne mini excavators/hand tools, and carried out with a 13 tonne excavator at the lower levels. All materials were separated and sorted into streams for recycling and re-use.

All materials arising from the works were recycled except for asbestos; any asbestos identified on site was removed prior to demolition.

All exposed faces of the demolition were weather protected with Felt Battens as the demolition reached these areas.