TechSpan®, (HKS®) is a precast arch system with 3 hinges.
The main elements:
- Foundation system
- Precast reinforced concrete arches
- Crown beam
Applications of TechSpan® system
- Short to medium span highway and railway bridges
- Access tunnels and underpasses
- Road culverts
- Water culverts
Advantages of TechSpan® system
- Tensile stresses are minimized and arch shape is optimized by utilizing sophisticated design methods
- Economical use of concrete and steel bars result in lower costs
- Precast arches provide quality control and rapid construction compared to conventional systems
- No scaffolding or bracing during the erection
- These advantages have allowed the successful completion of more than 600 TechSpan® projects worldwide since 1985.