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Guide to Road Tunnels Part 4: Retrofitting Tunnels
Guide to Road Tunnels Part 4 provides guidance on the retrofitting of existing tunnels, including the need for refurbishment, the types of refurbishment and processes for developing project requirements. Guidance is provided on geometric…
Guide to Road Tunnels Part 3: Operations and Maintenance
Guide to Road Tunnels Part 3 provides guidance on the management of the operation and maintenance aspects of road tunnels, including the factors to be considered in setting appropriate performance standards. Guidance is provided on stakeholder…