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Round Heical Pile vs. Square Helical Pile
Time:2023-08-22
Helical piles have two main designs: round and square. There is no shape that is absolutely ‘’better” than the other - it just depends on the conditions and objectives of the project.
So, what's the difference between round and square helical piles? Let’s take an in-depth look at these helical piles and how they function.
Round Shaft Helical Piles
Round shaft Helical piles are constructed of steel tubes with a circular hollow cross-section. They are greater in diameter than square shafts, so they are commonly used to support heavier structures, while the greater diameter makes them difficult to screw into rocky soils, so they are better used in softer soils.
●Advantages
-Suitable for soft soils
-Ability to withstand high lateral loads
-Higher installation torque ratings
-Can be filled with grout to improve structural durability
●Disadvantages
Larger shafts can be more difficult to penetrate very dense or rocky soils.
Square Shaft Helical Piles
Square shaft helical piles have a high tensile square tube with a narrower width and are easier to screw into rocky soil, they catch less soil pressure and rely on the rocky soil to support the helical blades or plates, so they have the greater penetrating ability.
●Advantages
-Ideal for very hard, dense, or rocky soils
-Better penetration without causing ground damage
-Capable of withstanding high axial compression loads
●Disadvantages
Long and slender shafts are not well resistant to lateral loads, and because of their narrow width, buckling may occur in soft soil.
Deep foundations anchored with the right helical pile design will last for years if chosen correctly. To get the most out of your helical piles, contact the experts!
So, what's the difference between round and square helical piles? Let’s take an in-depth look at these helical piles and how they function.
Round Shaft Helical Piles
Round shaft Helical piles are constructed of steel tubes with a circular hollow cross-section. They are greater in diameter than square shafts, so they are commonly used to support heavier structures, while the greater diameter makes them difficult to screw into rocky soils, so they are better used in softer soils.
●Advantages
-Suitable for soft soils
-Ability to withstand high lateral loads
-Higher installation torque ratings
-Can be filled with grout to improve structural durability
●Disadvantages
Larger shafts can be more difficult to penetrate very dense or rocky soils.
Square Shaft Helical Piles
Square shaft helical piles have a high tensile square tube with a narrower width and are easier to screw into rocky soil, they catch less soil pressure and rely on the rocky soil to support the helical blades or plates, so they have the greater penetrating ability.
●Advantages
-Ideal for very hard, dense, or rocky soils
-Better penetration without causing ground damage
-Capable of withstanding high axial compression loads
●Disadvantages
Long and slender shafts are not well resistant to lateral loads, and because of their narrow width, buckling may occur in soft soil.
Deep foundations anchored with the right helical pile design will last for years if chosen correctly. To get the most out of your helical piles, contact the experts!