On March 10, OVM technical staff successfully finished hoisting and positioning of steel arch ribs .Tongchou bridge is located on Hanoi, Vietnam. Its steel arch rib using Ф1200x18 steel. Cross section of a single rib is dumbbell form. Weight of a single rib is about 260 tons. Suspender using double suspender structure. Bottom end of the suspender using precast beam, weight of a single beam is about 140 tons. Tongchou bridge is the largest span arch bridge in Vietnam.
Hoisting of the arch rib was used OVM LSD1000 hydraulic lift system. This project will play a significant role for overseas development strategy implementation.