civilext on Instagram: "Meet the Caisson Sinking Method — a precise, safe way to build underground foundations using pre-made concrete rings! Step by step, these rings are lowered sequentially into sandy or clayey soils, creating strong, stable bases for bridges, buildings, tunnels, and more. No heavy external supports needed if done right, making it ideal for confined urban spaces. Plus, it’s safer and faster with today’s modern equipment. Engineering that digs deep — literally. 👉 Follow @civi