Would a plastic sewer system be at risk of floating when the groundwater level rises? Pipe flotation calculations show why not.
“In our municipality, quite a large part of the sewer infrastructure needs to be replaced soon. We are open to using plastic, but are not completely sure that it would stay in place due to the low pipe weight. Wouldn’t a plastic sewer system be at risk of floating when the groundwater level rises? I mean, is the pipe or manhole weight sufficient to withstand flotation, or is the weight of the layer of soil that covers it essential?”