Main Page | See live article | Alphabetical index Geotechnical engineering is concerned with the engineering properties of earth materials. Geotechnical engineers work with data from soil and rock samples to specify the requirements for man-made structures and earthworks that will be built on a site. These structures include shallow foundations (footings), deep foundations (piles and drilled piers), retaining walls, dams, embankments, and tunnels. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.