Our Restricted Access team has been set up to deal with unusual, difficult or tight situations not covered by our other services. Typical conditions for Restricted Access piling include limited headroom, constrained footprints, very close to existing structures or where heavy loadings cannot be supported. We have an array of techniques including but not restricted to;
- Bottom driven mini piles – crimped bottom casing that is driven internally and then filled with concrete when depth achieved
- Rotary percussive piles – used when piling in rock
- Sectional Flight Auger (SFA) – short sections of auger screwed together to achieve the design depth
- Continuous Flight Auger (CFA) – the most common method where concrete is delivered through the hollow stem of the auger
The purpose designed and built rigs and ancillary equipment are generally physically smaller and lighter than traditional piling rigs but can construct piles with similar loading capacity to their larger counterparts. This smaller physical size allows the rigs to access almost any site. Basically, if you can walk to the area to be piled we can get a rig to it, including inside buildings and deep basements.