How deep do screw piles typically need to go?

This genuinely varies by site — screw piles are installed to a depth where they achieve adequate bearing in stable ground, which can be shallow on some sites and considerably deeper on others depending on soil conditions.

Rather than a fixed target depth, installation is typically guided by a torque reading during installation, which indicates when the pile has reached genuinely adequate bearing capacity for the design load — a real, measured confirmation rather than an assumed depth.

Your soil report and engineering design give an expected depth range for your specific site, though actual installation depth can vary somewhat from that estimate based on real, encountered ground conditions.

Related Questions, Guides & Calculators