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Smithland Hydroelectric Power Plant, United States of America

Info projecten

Ligging: Smithland, Verenigde Staten

  • Construction of a hydroelectric power plant with 3 horizontal bulb turbines and a total capacity of 72 MW
  • Reinforced concrete construction: 78 m long, 62 m wide, 32 m high
  • Massive component dimensions (slab thickness > 4.00 m)


  • Extremely tight construction schedule of 18 months, resulting in simultaneous realization of the three turbine tubes and other components
  • Massive components with long utilization period of formwork and scaffolding resulting in high material requirements (provision for some areas 100 %)
  • Very complex forms, in particular for the turbine tubes as well as the intake structure with varying cross-sections
  • Very strict guidelines regarding the dimensional accuracy


CJ Mahan Construction Company, Grove City, OH

Voordeel klant

  • Saving of anchors through the use of the single-sided SCS climbing formwork
  • Optimal adjustment of the supporting structures for all areas due to the high degree of flexibility of the VARIOKIT system components - from the units to the heavy-duty shoring tower
  • Acceleration of the assembly and construction time on-site due to the pre-assembled formwork and scaffolding units
  • Highest dimensional accuracy of the concrete structure through stationary prefabrication of the 3D formwork units
  • Reduction of interfaces through the entire construction process thanks to formwork, scaffolding and engineering from one source
  • Continuous support provided for the construction management during the whole execution phase

PERI oplossing

  • Development of a comprehensive concept for the formwork and scaffolding technology while taking into account all project requirements as well as budget and schedule considerations
  • 3D planning of multi-curved formwork units for the complex forming of the tubes for the turbines
  • Dimensionally accurate realization and delivery of the 3D formwork units
  • Delivery of the elements in pre-assembled units
  • Continuous coordination of all formwork and scaffolding processes through a PERI project manager on site