Unfortunately calculating a helical pile foundation system cost is difficult. The exact cost of installing helical piles is not always the same, there are many factors that must be considered. A structural engineer will determine the condition of the foundation and how many helical piles will be required. The size of the helical pile itself will be determined by the weight of the building and the soil conditions.helical pile foundation system cost will finally be determined by the depth of each helical pile that is installed. Unfortunately the depth is determined by the amount of pressure it takes to screw the helical pile into the earth.
What Determines the Cost of Helical pile Installation?
Installing a helical pile only 20 feet will cost significantly less than installing helical pile 60 feet, this is only common sense. Helical piles also have varying thicknesses of the shaft. The load specifications will determine the thickness of the helical pile shaft. Two inch thick shafts are less expensive to purchase than 3 inch and 4 inch shafts. Each helical pile is torque tested while being installed to ensure that it has reached stable soil.
A certified helical pile installer working hand-in-hand with a structural engineer will determine how many helical piles are required, and the depth they must be inserted into the ground. Once these determinations are made and experienced helical pile construction professional will be able to give you a better feel for the costs.
In tomorrow’s post we will discuss the various ways that helical piles are attached to your foundation.