Located in Kathmandu, Nepal, this project focuses on Tribhuvan International Airport (TIA) — the country’s busiest international airport.
With limited aircraft parking and a heavily congested runway, TIA is undergoing a major expansion to increase its operational capacity.
As part of this expansion, a parallel taxiway is being extended towards the airport’s boundary. However, the elevation difference between the taxiway and the perimeter — from 9 to 25 metres — requires a robust retaining solution to protect adjacent facilities, particularly the cargo area, from potential instability.
Geoquest India was entrusted with the design, preparation of construction drawings, and technical assistance for the installation of a Reinforced Earth retaining structure to support the new taxiway alignment.
The scope also included the supply of both high-adherence and smooth GeoStrap reinforcements (for the top three layers and soil reinforcement), as well as GeoCore7, non-woven geotextile, EPDM pads.
Key figures for the project include:
- Reinforced Earth wall: 18,025 m² (max. height: 25 m)
- DrainTube drainage geo-composites: 112,398 m²
- TerraLine geosynthetic clay liners: 1,346 m²
- TerraDrain: 1,275 m²
- ArmaGrid BXPP: 43,800 m²
Work began in April 2023 and was completed in May 2025.
This prestigious project was honored with the “Outstanding Geotechnical Project Award – Nepal” by the Nepal Geotechnical Society in May 2025.
Geoquest is proud to have contributed to this strategic infrastructure development, which will significantly enhance air traffic operations and capacity at Nepal’s principal international gateway.
