Helical piles are steel screw-in piling and ground anchoring system used for building deep foundations. The piles or anchors shafts are manufactured using varying sizes of tubular hollow sections. Helical steel plates are welded to the pile shaft as per the pile design subject to the intended ground conditions. Helices can be press-formed to a specified pitch (i.e. the distance between threads). With each complete rotation of the screw, it goes in or out a distance equal to its pitch. or simply consist of flat plates welded at a specified pitch to the pile's shaft.
A variety of projects are featured in the images below:
An Innovative shoring method was used to shore a medium size excavation in a residential project. The project was located at 245 Old Yong St. North York, ON. A new system of helical pier soldiers with a very steep helical anchors were used to support the excavated soils. The depth of excavation was 4 meters in this project. This method Was not only cheaper than conventional methods but could also be installed in less than 1.5-meter distance from the property line.
A demolition, underpinning, shoring and excavation for a multi-use 4 story building in downtown Toronto. The project was a challenging geo-structural job. The project was in a narrow property adjacent to an old two story and a new three-story building without the basement. A combination of helical piles , shotcrete, an innovative method of cap beam and screw pile were used for shoring and deep foundation of the building. The project was located in 3039 Dundas street west Toronto.
A new built residential demolition, excavation, shoring and foundation job. The project was in 83 Virginia avenue in east York. The shoring of this job was a challenging one. The soil was loose dry sand with a week lateral capacity and digging more than 1 feet without support was impossible. Using 24 helical piers and a sliding method of lagging combined with concrete lagging helped us to shore this excavation.
A new built residential demolition, excavation, shoring and foundation job. The project was in 34 Sherwood Ave, North York. The shoring of this job was a challenging one. The neighbor’s footings were very close to the property line and the vibration was a challenge in this job. Using screw piles, as a soldier pile, helped us to control the vibration and made it possible that there would be no adverse effect on the safety of the neighbor’s footing. An innovative sliding wood support in the back of the helical piers made the excavated area very safe.