TechSpan® arches are frequently used for the construction of railway tunnels in earthen embankments or in cut and covers. This construction method, involving a strong soil-structure interaction, associates three-pin prefabricated concrete arches to a select backfill. The main advantages of TechSpan® technique are the material and structural quality, the rapidity of installation and the adaptability to the specific requirements of each project.
Installation of TechSpan® arches - Butler Extension Project in Australia
TechSpan® method is especially efficient when building the structures over existing rail tracks under traffic when closure is not an option.