When installing any sort of tank, media filter or aerobic treatment unit into a high water table or an area prone to flooding, designers and installers must consider if it will remain stable. Then the design plans should specify installation details for implementing anti-floatation measures.
Any tank or buried structure that weighs less than the water displaced will float when empty. To ensure a tank will not float when in saturated soil, a buoyancy analysis should be conducted. In order to carry out the analysis, you must know the weight of the empty tank, the weight of the minimum amount of
Will the Septic Tank You’re Installing Float?
To ensure a tank will not float when in saturated soil, a buoyancy analysis should be conducted. Here’s how to calculate if tank stability is a concern.
Nov 21, 2019 | by Sara Heger, Ph.D. |

















