A reinforcement system is developed for aged RC telecommunication manholes which are unavoidable a sustainable use. Essential reinforcement parts of an aged manhole are a periphery of circular entrance on the upper slab and corners between the slab and walls. These parts may be critical to bending moment by excessive live loads of automobiles. The system is composed of the round arc CFRP plate for the upper slab and resin concrete segments for the corners. The former is effective to increase stiffness of the manhole as well as the latter to increase strength. This paper shows verification of the system based on full-scale model tests and on 3D-FEM simulation analysis.
