Special Doors

Structural Fire Protection in Tunnelling

Special Doors

The requirements in accordance with RABT (Directive for the Equipment and Operation of Road Tunnels), ZTV-ING (Additional Technical Conditions of Contract for Civil Engineering Structures) and TL/TP TTT (Technical delivery terms and technical testing standards for doors and gates in road tunnels) apply to exit doors and connecting doors in tunnel construction.

In addition, higher requirements apply to the construction of special doors, for example, increased pressure-suction stability or a special material grade.