In the context of civil construction deep foundations refer to the piles, piers, drilled shafts, and caissons that are embedded deep into the ground. The added depth allows the foundation to bear a higher weight load and to remain strong and secure, even if soil quality is poor nearer the surface. STI Group offers a full range of comprehensive deep foundations services within our civil construction service team.

Different Driven Pile Materials

STI Group is experienced with a variety of different pile material types. This allows us to us offer more options to our clients and to use the pile material that will be most beneficial to a given construction project. Some of the different pile types we can work with include:

  • Prestressed Concrete Piles – Piles that are made of prestressed concrete have an advantage in terms of overcoming concrete’s susceptibility to tension. Prestressing is accomplished by using either pre-tensioned concrete, bonded post-tensioned concrete, or unbonded post-tensioned concrete. STI Group can use prestressed concrete as needed to increase the concrete pile’s resistance to tension.
  • Reinforced Concrete Piles – Reinforced concrete has reinforcing bars, or rebar, added to increase its tensile strength. This helps prevent cracking and structural failure. STI Group can oversee civil construction projects that call for the use of reinforced concrete piles.
  • Timber or Wood Piles – Piles made of wood or timber offer a more affordable pile option to concrete or steel. STI Group can evaluate the construction project and determine if timber piles are a suitable alternative.
  • Steel or H-Piles – Piles that are made of steel are often also called H-piles because the steel beams are in an H shape. Steel piles may also be made of pipe. Steel piles are very strong and can bear a great deal of weight. STI Group can use steel piles for our civil construction projects as needed and can evaluate corrosion risk and determine appropriate methods of prevention.
  • Composite Piles – Composite piles are piles that are fastened together to form a single, longer pile. They may be formed from different materials such as steel or concrete. When the situation calls for composite piles, STI Group will ensure that they are safe and secure.

Augercast Piles

Augercast piles are formed by drilling a hollow-stemmed, continuous flight auger into the ground to the desired depth. Then a cement grout mix is pumped down the stem of the auger as the auger is slowly withdrawn. Reinforcement can be added as needed. Augercast piles offer the advantage of causing minimal disturbance to the site. STI Group can oversee augercast piles for our civil construction clients.

Specialty Piles

In addition to augercast piles and the various pile material types mentioned above, some projects may benefit from the use of specialty piles. These includes piles such as sheet piles, vibratory piles, and helical piles to name a few. STI Group will oversee the safe installation of these specialty piles types as we work closely with our construction clients to ensure that they get the best type of pile possible for their deep foundation work.

STI Group’s Rigorous Standards for Deep Foundation Work

STI Group rigorously adheres to the highest level of civil constructions standards for our deep foundation work. We carefully follow the guidelines set by the American Concrete Institute (ACI) when working with concrete and the American Society for Testing and Materials (ASTM International) for our use of other materials and testing. Our clients know that when they choose STI Group for their deep foundation work they will have a strong foundation that they can rely on.

STI Group Understands the Needs of Its Deep Foundation Clients

STI Group is an experienced general contractor and purveyor of EPC services. Over the years we have accumulated extensive resources such as highly experienced, certified craftsmen and workers, a close working relationship with vendors and suppliers, and a very deep understanding of the civil construction industry. This allows us to offer outstanding levels of safety, quality, and efficiency while remaining on schedule and on budget.