The history of screw piles dates back to the middle nineteenth century when a blind Irish civil engineer Alexander Mitchell came up with this foundation solution. Screw Piles or Screw Anchors were normally used as pile foundations for light houses and as piers in harbors.
Recently screw piles have happened to offer solutions to industries like the construction industry, railways, telecommunication and many more to come, The benefits are a lot quick and easy installation, less soil displacement, check on the carbon footprints, involvement of less manpower and of course cost effective.
Screw Piles are steel tubes (seamless or ERW) made up of steel and come with 1, 2 or 3 helices (as per your requirement). The pipe with helices is called lead section. The helices act as screw and we need to apply torque to it out that into the ground. A lead section may have 1 or 2 extensions (Extensions : similar steel tube with or without helices attached to the lead section with steel structures called coupler).
Few countries have been using Screw Piles for the foundation construction of wooden houses, decks or patios.