Rectangular Tanks

Rectangular precast post-tensioned concrete tanks are designed for an array of wastewater functions, including SBR’s, Extended Aeration, CSO, MBR’s, water reservoirs and more.

Features & Benefits

  • Above grade or buried
  • Concrete walls remain in constant compression
  • “Green” roof option
  • Aesthetic versatility
  • Cost savings 
  • Higher quality concrete
  • Faster installation
  • Smaller environmental footprint

Rectangular Post-Tensioned Concrete Tanks

These precast concrete tanks are manufactured at a PCI-certified facility and can be designed to account for differential loading. Post-tensioned walkways provide a structural upper fixed beam on rectangular tanks. Without the need for conventional cantilever design requirements, the wall thickness of deep structures can be reduced.

From design to the completion of our rectangular tank projects, all due diligence is advantaged to produce a water-tight and enduring finished product.

Technical Details

  • AWWA D115 Standard or ACI 350 Standard
  • Panelized precast walls
  • Post-tensioned structure
  • Horizontal Mono-strand Unbonded Tendons


  • Aeration
  • Anoxic Reactors
  • Bioreactors
  • Clarifiers
  • Combined Sewer Overflow
  • Denitrification
  • Digesters
  • Effluent
  • Equalization
  • Extended Aeration
  • ICEAS Sequential Batch Reactors
  • Membrane Bioreactors
  • Post-Equalization
  • Pre-Equalization
  • Pump Stations
  • Sequential Batch Reactors
  • Valve Vaults