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12-14 Wigmore Street

Client: VolkerFitzpatrick
Value: £2.2 million
Duration: Jun 2014 – Mar 2015


Project Description:

64-66 Wigmore St is a new self-contained office building located in the heart of London that was developed to provide approximately 55,000 sq ft of Grade A office accommodation across 7 floors inclusive of a double basement.

Richmond was contracted to carry out the bulk excavation of the double basement. Richmond also installed the reinforced concrete basement floor slab, foundations and walls up to ground level. It was a challenging and rewarding experience to undertake such an enormous basement contract in the heart of London city.

Main Scope of Work

Removal of piling mat
  • 300 plus load of stone was carted off site

Break down existing reinforced concrete piles
  • The existing reinforced concrete piles were 750mm in diameter

  • They were broken down the full depth of the excavation (average of 6 metres) using our specialist pile cropper equipment

  • Approximately 100 no. piles were broken out and carted off site

Bulk excavation of muck and cart off site
  • Average depth of 6 metres from street level

  • Excavations depth up to 9 metres in places

  • 1700 plus loads carted off site


Steel Reinforcement
  • Fixed 950 tonne of reinforcement

  • The majority of the steel was located in the basement slab

  • Also fixed steel for walls and crane base


  • Poured 3400 m3 of waterproof concrete

  • 300 metres of drainage was installed

  • Installed 15 no. manholes 

  • Installed 600m of service ducts

  • Installed 12 no. reinforced waterproof concrete  service pits

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