Hey! Clay soil that stays wet is perfect for screw piles – they handle it way better than concrete with frost heave issues. Here’s the thing: manual installation in clay is nearly impossible. Clay provides huge resistance without proper equipment. You need a pile driver for the torque requirements. Look at https://how-to-work-with-screw-piles.blogspot.com/2025/06/what-is-pile-driver-and-why-do-you-need.html for how these work in tough conditions. For clay, automatic models are best – consistent power without exhausting yourself. Your 12×16 workshop needs 6-8 piles, and with proper equipment you’ll finish in hours not days.