Scope of Work Included:

• 57 caissons total
• Diameter sizes of 96”, 84”, 72”, 60” and 36”
• Over 1,150 vertical feet of 96” drilling
• Over 500 vertical feet of 60” drilling
• Over 600 vertical feet of 72” drilling
• Included 15 foot rock sockets on all 96” diameter caissons

Challenges Recognized:

• Fast paced schedule
  Solution: FSI utilized multiple rigs and 18-hour shifts
• Eight caissons located between two active AMTRAK rail
  tracks and behind existing concrete structure
  Solution: FSI engineered casing pipe and pick plans that
  worked for the tight working space and railway loading
• Reinforcing steel length of over 85 feet
  Solution: FSI prefabricated, picked, and installed each rebar
  cage as one unit