Mini Piling in St Helens

Mini piling is a process whereby deep foundation elements are constructed using high strength, small diameter metal casing and/or threaded bars. It is used to provide structural support to most structures, to underpin foundations, to enhance mass stability, and to transfer loads.

The metal casing is put into the design depth using a specialist drilling technique. An all-thread bar, is put into the casing and then cement is put in it. It may be necessary that the casing extends the full depth or it may finish off above of the bond zone and the reinforcing bar going to the full depth.

The capacity depends on the diameter of the pile and the profile of the subsurface. However, capacities of more than 1000kN can be reached.

 When is Mini Piling needed?

Mini piling is the ideal solution for those locations with limited access, work inside structures with a minimum headroom of 2.4m, new build foundation, underpinning buildings, those properties impacted by subsidence, retaining walls, retro fit basements, and for mezzanine floors.

Bottom Driven Piles

Installing of bottom driven piles is quick, efficient and suitable for almost any ground condition. Spoil removal is not required, which makes the process a particular advantage at brownfield sites.

A thin walled steel tube with a closed end is driven in lengths of anywhere between 2m and 6m into the ground using an internal drop hammer. Each tube is joined by a full weld as the installation process continues. The pile goes down to a predetermined length criteria. Once the depth is reached, the steel tube is filled to the top with concrete and bar or cage is inserted.

We provide a range of piling solutions in and around the St Helens area.