QUICK GUIDE HELICAL SCREW PILES
An alternative to conventional bored or driven piles, lighter weight metallic helical piles are literally screwed into location through rotation. These piles come in standard sectional lengths and can be bolted to shaft extensions with a proprietary connection detail. Some have a liquid grout poured into their excavation as they are wound into the ground, ensuring any voids around the shafts are filled as the installation process takes place. The main benefits of this solution include:
Their quick and easy installation – rotational equipment can be added to most types of hydraulic excavator including JCBS.
Although lighter weight, they can carry fairly substantial loads, making them ideal for extensions and some lighter weight stand-alone buildings.
They can be adapted and used as a means of underpinning in certain situations.
They cause less disturbance to tree roots, so are a sympathetic option in wooded environments.
They are an ideal solution where access to a building site access is limited, making it difficult to accommodate big machinery.