Traditionally, building tunnels is a tedious task. Just ask anyone in the Washington, DC area who has had to wait for years for the Metro subway to complete it’s extensions to surrounding areas.
Lock-Block Ltd, a construction material production company, has introduced an innovative system to make quick and durable tunnels that can be used as pedestrian passageways, wine cellars, shelters, and more. According to the company, The Arch-lock™ system is a completely different way to construct arches and tunnels in a very short period of time.
With it, 1.5m of arch can be constructed every 5 minutes, reducing construction times by 90%! Arches can also be constructed using a counterweight system that doesn’t require one to set foot underneath the arch during construction, meaning the arch can be used to cross sensitive waterways or just thin air. The pieces come together like Lego blocks, reducing the need for concrete which requires 28hrs to cure.
Using the system, the video here shows 1/4 mile of tunnels in 24 hrs.