Geotechnical Engineering

Geotechnical Engineering Consulting

Our staff combines local and international experience that work hard on providing our clients practical solutions to the projects geotechnical conditions. Our engineers are used to challenges and our goal is to assist our clients on finding reasonable recommendations for the respective projects geotechnical conditions. J&S invests in the latest engineering software, tools and testing equipment. J&S has advanced field testing equipment such as Seismic piezo Cone Penetration Tester (SCPT), borehole and surface seismic geophysical testing which provides our engineers with the tools. In addition, our modern soil mechanics laboratory is equipped with state of the art, automated consolidation, triaxial and permeability testing apparatus, among other soil testing equipment.

Marine Geotechnical Investigation

Jaca & Sierra has vast experience in performing marine geotechnical investigation at different locations within the Caribbean. Jaca & Sierra can either deploy its own sectional spud barge or sub-contract regional barges to perform investigations. We can complete deep borings with undisturbed Shelby or Piston Tube sampling and perform HQ or PQ wireline diamond bit rock coring. Marine geotechnical investigation have been completed for new wharfs, piers, bridges, marina and offshore industrial facilities. Jaca & Sierra has completed marine geotechnical investigations for the following projects:

  • Tortola Cruise Ship Pier, Tortola, BVI
  • North Sound Yacht Club, Virgin Gorda, BVI
  • Deep Bay Marina, Oil Nut Bay, Virgin Gorda, BVI
  • Cargo Ferry Pier at Spanish Town, Virgin Gorda, BVI
  • New Marina and Restaurant at Jost Van Dyke, BVI
  • WICO Cruise Ship Pier, St. Thomas, USVI
  • Schooner Channel Dredging, St. Croix, USVI
  • Crown Bay Pier Extension, St. Thomas, USVI
  • Veterans Drive Expansion, St. Thomas, USVI
  • Yacht Haven Marina, St. Thomas, USVI

A list of some of our consulting specialties:

  • Complete Site Geotechnical Evaluation and Engineering Reports
  • Earthwork Recommendations
  • Earth Retaining Structure evaluation
  • Excavation Support System Consulting and Design
  • Soil and Rock Slope Stability Evaluation
  • Landslide Repair & Mitigation
  • Foundation Analysis and Recommendations
  • Seismic Site Specific Evaluations
  • Liquefaction Potential Analysis
  • Settlements Estimates and Mitigation
  • Expansive Soils
  • Seepage Analysis on Dams, Levees and Excavations
  • Dewatering Systems and Design (Design-Build)
  • Erosion Control and Bridge Scour
  • Deep Foundations/ Driven or Drilled (ACIP, CFA or Displacement) Piles
  • Pile Driving Criteria/Pile Load Test Evaluation
  • Drilled Shaft Testing and Evaluation
  • Micropiles
  • Ground Improvement
  • Stone Columns and Aggregate Piers Ground Improvement
  • Pressure Grouting, Compaction Grouting and Permeation Grouting
  • Karst Terrain and Sinkhole Activity Consulting
  • Geotechnical Engineering Forensics and Expert Witness Services
  • Geological Studies and Engineering Geology
  • Geo-Structural Analysis and Design
  • Deep Foundations Soil Structure Interaction Modelling
  • Port Facilities and Marine Structures
  • Concrete Repair, Basement Waterproofing