Stone column ground improvement consist of inserting upright columns of stone into the soil to a depth of at least 4m below the ground surface. A layer of compressed gravel can then be put over the top of the columns, ready for the construction of new house foundations. The stone column method is quick to construct and can be done at any time of the year.
How are stone columns built?
Stone columns are built by qualified contractors using expert equipment. The structure uses a machine with a vibrating probe to supply stone into the ground, forming a vertical column of stone.
Some stone column rigs feed stone into the soil through the vibrating probe, exiting at the bottom, and other rigs require the stone to be fed in from the ground surface down the vertical hole in the ground. Both types use a vibrating probe that densifies the nearby soils to help feed the stone into the ground.
How do stone columns enhance the ground?
Stone columns help to reduce the extent and concerns of future liquefaction by:
- Densifying the soil using vibration and introducing stone into the soil
- Strengthening the soil creating a rigid composite soil mass
By accomplishing this, the non-liquefying soil coating is condensed and strengthened to reduce the chances of folds, slopes, and uneven ground surface subsidence from liquefaction of the core soil layers, therefore lowering damage to the house foundations.
In addition, stone columns may occasionally offer the soil with an improved drainage path to help ease water pressure that can lead to liquefaction, so the columns can lessen the effects of liquefaction when this happens.
We have an excellent range of used Stone Column Piling Rigs for sale. Stone Column piling machines to allow work to be completed efficiently and effectively.
Please contact one of our Team for further information on Soil Column Piling Rigs, Geotechnical Drilling or Mini Piling Rigs.