Screw piles are a type of foundation used to support structures in areas with weak or unstable soil conditions. They are typically made of steel and have a helical shape that allows them to be screwed into the ground without the need for excavation or concrete. Screw piles are often used for decks, gazebos, and other outdoor structures, as well as for underpinning existing foundations.
Screw piles offer a number of advantages over traditional foundation methods. They are less expensive and time-consuming to install, and they can be installed in a wider range of soil conditions. Screw piles are also more environmentally friendly, as they do not require the use of heavy equipment or excavation. The first screw pile foundation was developed over 150 years ago, and they have since become a popular choice for both residential and commercial construction.