The builder on this site in Kingston, Surrey, commenced his construction programme by attempting to dig conventional trench fill foundations. Unfortunately, due to the clay and the location of trees, the Local Authority building inspector required them to dig deeper or opt for an engineered foundation solution. From both economic and safety perspectives the deep trenches proved unfeasible when compared to piled foundations.
We were contacted and provided a detailed design which was submitted successfully to the Local Authority. We then installed 10 auger bored piles of 250mm diameter to depths of 10m and subsequently installed the ground beams. The builder then constructed his sleeper walls and placed his beam and block floor. Our short lead-in period and the fact that the work on site took only two weeks enabled the builder to get back on timetable. We provided the client with a 12 year insurance-backed guarantee for the completed works.
On this site in Chobam, Surrey, we first installed a contiguous wall using our Soilmec cm 48 and then used our smaller equipment to place the bearing piles in the bottom of the new basement once the area had been excavated.
This facilitated excavation for the client, a local developer, avoiding the risk of pile damage and of extra costs for any unnecessary piling length.
At this site in Godalming, Surrey, the main contractor was constructing a three storey block of flats. We installed 40 open bored piles of 350mm diameter to depths of 6m–14m into the weak sands to provide a suitable bearing for the foundations. The site was restrictive and had neighbouring properties on three sides. Our Klemm machine was ideal as it required only a minimal piling mat, minimising concerns for the occupants of the neighbouring properties.
Works were completed within one week.
The rig shown requires a space of approximately 14m x 14m to operate but consideration needs to be given to adjacent buildings and storage space for an agitator drum, concrete pump and materials such as pile cages.
The machine shown here is our Soilmec CM48, which was used to install 150 450mm diameter piles to depths of up to 19m through water bearing clay in a site in Neasden, north London, for a local developer
The works took two weeks to complete.