A deep foundation is a type of foundation distinguished from shallow foundations by the depth they are embedded into the ground. There are many reasons a geotechnical engineer would recommend a deep foundation over a shallow foundation, but some of the common reasons are very large design loads, a poor soil at shallow depth, or site constraints (like property lines). There are different terms used to describe different types of deep foundations including the pile (which is analogous to a pole), the pier (which is analogous to a column), drilled shafts, and caissons. Piles are generally driven into the ground in situ; other deep foundations are typically put in place using excavation and drilling. The naming conventions may vary between engineering disciplines and firms. Deep foundations can be made out of timber, steel, reinforced concrete and prestressed concrete.
Read more about Deep Foundation: Driven Foundations, Drilled Piles, Piled Walls, Deep Mixing/mass Stabilization Techniques
Famous quotes containing the words deep and/or foundation:
“How deep is our desire to do better than our mothers—to bring daughters into adulthood strong and fierce yet loving and gentle, adventurous and competitive but still nurturing and friendly, sweet yet sharp. We know as working women that we can’t quite have it all, but that hasn’t stopped us from wanting it all for them.”
—Anne Roiphe (20th century)
“The poet needs a ground in popular tradition on which he may work, and which, again, may restrain his art within the due temperance. It holds him to the people, supplies a foundation for his edifice; and, in furnishing so much work done to his hand, leaves him at leisure, and in full strength for the audacities of his imagination.”
—Ralph Waldo Emerson (1803–1882)