Our Services

Keystone specializes in most deep foundation systems and our site provides a brief synopsis of each.  For any foundation system, it is paramount to understand the geology and ground conditions and allow the data to dictate the most appropriate system.  We welcome any opportunity to assist in this endeavor to work with potential clients on reviewing provided information to ensure the best value is achieved given the ground conditions.  We would also look to advise of any constructability issues and opportunities to improve design. 

Drilled Shafts

Drilled Shafts are high – capacity deep foundation elements typically used for bridges and high rise buildings with diameters ranging from 18” to 12’ diameter.

Are typically preferred when high axial and lateral loading conditions exist. They can be designed to penetrate most soil profiles (e.g. loose soils to hard bedrock).  Typical diameters can range from 2’ diameter up to 12’ diameter.  There are several methods that can be used to install them per the following:

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Auger Piles

(Auger Cast-In-Place or Drilled Displacement) Auger piles are deep foundation elements typically used for mid to high rise buildings with capacities similar to driven piles but can be installed in vibration sensitive environments.

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Helical Piles

Helical piles are deep foundation elements that can be installed in vibration and environmentally sensitive environments.

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Support of Excavation

Can utilize any of the deep foundation elements described above.

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Secant Piles

These are rigid and often times permanent earth retention elements preferred to a traditional system for various reasons (for example basement walls with limited room for a temporary system, limiting verticality deviation and adjacent structure movement)

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More Services

  • Load testing
  • Driven piles and pre-drilling
  • Installations in limited access and low clearance conditions
  • High-rail (track railroad) installations using specialty equipment
  • Marine installations including diving, underwater cutoffs, and inspections
  • Cost budgeting and value engineering services

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