What are dead man anchors used for in underground tank installations?

Dead man anchors are specifically designed to prevent tank flotation in underground storage tank installations. When tanks are placed below ground, they can be susceptible to buoyancy forces, particularly in areas where the groundwater levels fluctuate. If the groundwater rises around a tank and the tank is not properly anchored, it can float to the surface, leading to potential damage to the tank, leaks, or environmental contamination.

By using dead man anchors, which are typically concrete blocks or similar heavy materials embedded in the ground, the tank is secured against these buoyancy forces. This helps to ensure that the tank remains securely positioned underground, effectively reducing the risk of it rising or becoming dislodged. Thus, the primary purpose of these anchors is to maintain the tank's stability and integrity in the face of hydrostatic pressure.