subsurface

When this happens to subsurface water below a structure, it can behave like a jack to lift it up.

The solutions to subsurface problems are almost always hidden from public view, so you might never even know they’re there.

These are driven into the subsurface soils using a huge hammer to create a watertight barrier.

Now, as groundwater naturally moves in the subsurface, it carries a plume of contamination along as well.

This pressure compresses the material in the subsurface more and more the further down you go.

This elevated pressure in the subsurface and high velocity of flow means that the soil particles themselves aren’t being strongly held together.

Drilling can inadvertently impact other subsurface utilities or underground structures.

If just the right factors come together in the subsurface, some very interesting things can occur, including sinkholes.

Many of our subsurface utilities are placed directly below roadways, and the paving often acts as a final bridge above the sinkhole, hiding the void below.

In fact, most geologic units of rock in the subsurface have at least some amount of jointing, or natural breaks.

First, a vertical hole is bored into the subsurface using a drill rig.

We think there's liquid subsurface on Mars.

It is a disruptive and expensive ordeal to install subsurface pipes, especially because they are so intertwined with roadways and other underground utilities.

Although there are quite a few ways to install subsurface pipelines, telecommunication cables, power lines, and sewers without excavating a trench, only one launches lines from the surface.

An average single-story residential home is designed to apply a pressure to the subsurface of maybe 100 pounds per square foot of building footprint.

However, construction of the tower’s basement also required the contractor to pump water out of the subsurface to keep the site dry.