REINFORCED SOIL WALL FOR VUP AT KEMPEGOWDA INTERNATIONAL AIRPORT

Compared to conventional structures, RS Wall system with precast concrete panels as facia and Paraweb as reinforcement was selected as the best solution due to its economy, flexibility, speed of construction, aesthetic finish and long term performance. Cruciform shaped panels with corrugations were used as fascia. Green space for plantation was also proposed over the RS Wall at few locations. As watering would be done for the growth of these plants, MacLine layer below vegetative soil was proposed to avoid movement of water into the reinforced zone. Drain of depths varying from 0.7 to 1.8m was proposed over RS Wall as a part of surface drainage arrangements. These drains were located at different offsets from the face of RS wall along the stretch. For portions where drains were near to the face of facia panels, the top panels with steel anchor rods inserted on the face towards soil fill side were connected to the steel reinforcement of side face of the drain during its in-situ casting. The main highlight of this project was to overcome the difficulties in removing existing embankment & constructing the RS Wall without disturbing the traffic passing over existing road.