OTB are skilled in the design of mined tunnels and caverns ranging from 3m diameter to over 20m in diameter. We offer a method led design with the ability to correctly characterise the behaviour of the ground. We offer practical, innovative mined tunnel solutions that reduce construction risks and offer overall programme and cost savings. We have designed and built numerous complex underground structures often within the confines of existing safety critical infrastructure.
We have developed hybrid construction methodologies to suit the constrained environments we often work in. Our services extending from ideations to concept to technical design through to site supervision and support.