Deep Excavations & Retaining Walls
Excavation and temporary works design: sheet piling, bored pile and diaphragm walls, soldier pile walls, anchoring, underpinning and dewatering.
The design that comes before the frame and decides its programme.
What we take on
- Retaining systems: soldier pile walls, sheet piling, bored pile and diaphragm walls
- Propping and anchoring, ground anchors and strut levels
- Underpinning and protection of adjacent buildings
- Uplift verification, base sealing and dewatering strategies
Adjacent buildings are the critical point
In a gap between two existing buildings it is not the capacity of the wall that decides but its deformation. We calculate settlement and displacement and define what gets monitored – the condition survey and monitoring regime belong in the design, not in the later discussion about damage.
Method and cost
The choice of retaining system is usually the single largest cost decision in the groundworks. We set out options with quantities and constraints before designing one of them in full, rather than developing the first system that works.
Water & Civil Works