Foundation Fundamentals: Advantages of square bar vs pipe helical piles

This video explores the benefits of using square bar versus pipe helical piles, focusing on a specific combination approach. Initially, the installation begins with a lead section, which is the first part to penetrate the ground. Featured in this setup is a square shaft bar, specifically an SS 175, which denotes a solid bar with a 1.75-inch shaft. To facilitate the transition from square bar to pipe, a special adapter is used. This combination, often referred to as a combo or combination pile, leverages the square shaft's superior ability to penetrate dense, hard, and firm bearing soils. The choice to transition from square bar to pipe is significantly influenced by the relationship between torque and capacity, optimizing the pile's performance in varying soil conditions.

Helical Piles: https://www.hubbell.com/chancefoundationsolutions/en/products/power-utilities/anchoring-foundations/helical-anchors-piles/cl/548080

Combo Piles: https://www.hubbell.com/chancefoundationsolutions/en/products/power-utilities/anchoring-foundations/helical-anchors-piles/combo-pile-transitions/c/551130

Square Shaft Lead: https://www.hubbell.com/chancefoundationsolutions/en/products/power-utilities/anchoring-foundations/helical-anchors-piles/lead-sections/c/551122