New Basement Construction Underpinning Foundation Waterproofing

Construction of new basement externally within reinforced waterproof concrete walls and reinforced concrete slab. The internal basement was constructed by extending the existing foundations using an underpinning method and the these walls were then lined with a 150mm concrete wall. The ground was battered back and the excavation done in a piecemeal way. We installed the drainage and sump pumps installed for waterproofing. Waterproof concrete was used as the first line of defence and the internal walls were finished with a delta membrane.

Foundation Strengthening works and reinforced ground beams

Strengthening of existing foundations to support additional floors. The works involved excavating alongside existing foundations, tying reinforced ground beams with chemical anchors to the existing foundations. The strengthened foundations supported a steel frame and a moment steel frame to give the building stability.

Reinforced Concrete Retaining Walls Over Four Metres High

Reinforced Concrete Walls

Constructed a reinforced concrete wall up to 450 mm thick using temporary formwork panels.  Our own in house design team designed all the temporary works required and also offered a non piling solution for the construction of the foundations.

    

Basement Construction – Underpinning – Structural Steel –

Under house basement construction works – converting an existing cellar into two spacious flats.

Main areas of our work
  • installation of structural steel
  • basement structural alterations
  • removal of structural walls
  • underpinning method to extend the existing foundations of the building to form the basement walls
  • reinforced concrete floor slab
  • basement waterproofing
  • basement pumped drainage