Rockfall is an inherent hazard of mountainous terrains, which jeopardizes life and property and threatens the smooth operations of traffic lines. TechShelter™ is a perfect custom-designed solution of pre-cast arch box (TechBox™ and TechSpan®) for sheds and shelters, tailor made to suit these site conditions. The pre-cast technology is one of the most reliable, cost-effective system available for cut ‘n’ cover structure.