Project Details » The Trocadero
Trocadero, Picadilly Circus, London
- Location Area - Trocadero, Picadilly Circus, London
- Contract Duration - 2 Months
- Type of Work - Diamond Stitch Drilling, Piling Foundations
- Value - £80,000
A major part of the foundation strengthening to the Trocedero Project, was the requirement for piled foundations in the access restricted basement area. Piling rigs were to bore 500mm diameter piles in restricted areas to required finished depths.
A major problem to the project was that during drilling depth investigation the basement floor slab was found to be up to 4.0 mtrs in depth. This meant that a requirement of drilling 600mm diameter holes in seawash reinforced aggregate concrete to depths up to 4.0 mtrs would be required.
After advising the client Denver Construction Services were awarded the contract to drill the piling foundation holes.
Denver Construction Services decided to use 100mm diameter barrels x 4.0 mtrs long to stitch drill a circular series of holes to form the 600mm diameter openings required. When each of the 4.0 mtr x 100mm diameter cores had been extracted and removed the remaining reinforced concrete section approx 500mm diameter x 4.0 mtr length had to be lifted out.
To achieve this Denver Construction Services drilled and fixed high strength resin lifting lifting eye anchors into each section and lifted each one out with the use of hydraulic chain lifting blocks bolted through the ground floor slab ceiling.
Denver Construction operatives worked continual 24 hour shifts throughout the contract and successfully completed the job ahead of schedule