Our Services

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EXCAVATION

  • With one of the largest fleets of excavators and hammers in the city, we can perform soil and rock excavation on any size site (from a postage size site to several acre sites such as Columbia Manhattanville). We have the experience, equipment, and knowledge to deal with sites of all contamination levels.
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FOUNDATION

  • CCJV has constructed the some of the largest and most complicated foundations in NYC. We currently hold the record for largest continuous concrete pour in NYC.
  • We routinely perform deep excavations below ground water and have the experience and expertise to perform all the stages of excavation and foundation.
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SUPPORT OF EXCAVATION (SOE)

  • CCJV specializes in both internally and externally braced SOE systems. The lateral restraint can be an external system such as tiebacks or an internal system such as rakers, corner braces, cross lot braces, etc. We have installed extensive SOE systems for excavations up to 50’ below grade. We have worked adjacent to sensitive structures, historic buildings, transit structures, etc.
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UNDERPINNING

  • When working adjacent to and below adjacent structures, pit underpinning is historically the most common system used. Underpinning piers transfer the load of the adjacent building to a deeper zone to allow for the construction of the new structure. This is achieved by locally excavating pits in a specific sequence and replacing the soil with concrete, essentially allowing the existing structure to bear on a deeper soil strata.
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DRILLED CAISSONS

  • Steel casing/pipe is drilled to rock and a rock socket is constructed. All-thread bar or a reinforcing cage is installed, and the caisson is fill with concrete or grout. Able to provide high compressive, tensile, and lateral capacities.
  • Installation with limited disturbance to adjacent structures.
  • Installation on a variety of project sites with variable site constraints.
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SECANT PILE WALL

  • Constructed by installing overlapping (secant) temporarily cased piles to form a rigid and water-tight earth support system. Often this can serve a dual purpose as a permanent foundation wall. Most often, reinforcement is installed in every other element.
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TANGENT PILE WALL

  • Constructed by installing adjacent (tangent) temporarily or permanently cased piles to form a rigid earth support system. Often this can serve a dual purpose as a permanent foundation wall. Most often, reinforcement is installed in every other element or casings may be left in place to serve as reinforcement.
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SHEET PILES

  • Sheet piles are steel z-shaped sheets with interlocking edges that retain soil and are most often installed using driven or vibratory hammers.
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SOLDIER PILES & LAGGING

  • Soldier piles and lagging retains soil, using vertical steel piles with horizontal wood lagging. The soldier piles can be either driven/drilled/vibrated based on the project conditions.
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TIEBACK ANCHORS

  • Tieback anchors (solid bar/hollow bar/ strand tendons) are used to provide lateral restraint to support of excavation systems.
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TIEDOWN ANCHORS

  • Soldier piles and lagging retains soil, using vertical steel piles with horizontal wood lagging. The soldier piles can be either driven/drilled/vibrated based on the project conditions.

While providing the vast majority of services in house, CCJV also partners with certain specialty subcontractors to perform:

  • Ground Improvement
  • Soil Mixing
  • Driven Piles
  • Various Grouting Techniques
  • CFA Piles

OUR SUBCONTRACTORS ARE TRULY OUR PARTNERS, AND THE PROJECT EXPERIENCE REMAINS SEAMLESS FOR THE OWNER.