Telangana, India | National Highways Authority of India (NHAI)
TechFab India scope encompassed end-to-end Reinforced soil wall (RSW) solutions, including engineering design, approvals, submission of detailed construction drawings, and supply of high-performance materials such as Techstrap Polymeric Strips, nonwoven geotextiles, and associated RSW accessories. The project involved the successful implementation of reinforced soil wall structures with heights ranging from 2.0 m to 10.0 m, ensuring structural stability, durability, and optimized performance in line with project requirements.
The project site encountered poor soil strata at the foundation level, resulting in a safe bearing capacity lower than the required bearing pressure for the proposed wall height. This condition necessitated the adoption of an effective ground improvement solution to enhance the soil’s bearing capacity and ensure the stability and performance of the reinforced soil wall system.
A detailed geotechnical investigation was conducted at the site by the contractor, and the borehole data were analysed to assess the subsurface conditions. Based on this evaluation, a ground improvement scheme was developed involving soil replacement for various height classes below the bottom of the levelling pad (BOL) or the existing ground level (EGL), whichever is lower, using good-quality granular fill.
Additionally, layers of non-woven geotextiles (PR-20) were incorporated to act as a separation barrier between the existing soil and the replaced fill. This prevents intermixing of materials, maintains the integrity of the fill, improves drainage, and enhances load distribution. As a result, it contributes significantly to the overall stability, durability, and long-term performance of the reinforced soil wall system.
The project was successfully completed in April 2025.
Reinforced Soil Walls
TECHCORE CONNECTOR
The new 42.119 km Greenfield highway section required stable and durable embankments to support access‑controlled lanes. Reinforced soil walls provided an economical, flexible, and high‑performance solution for varying wall heights (2.0 m to 10.0 m).
The foundation soil strata had poor bearing capacity, lower than the required pressure for the proposed wall heights. Without ground improvement, this could have led to instability, settlement, or premature failure of the RSW system.
TechFab India delivered an end‑to‑end solution including:
Ground improvement was achieved by soil replacement with good‑quality granular fill, combined with geotextiles for separation and drainage.
The project was successfully completed in April 2025. The reinforced soil wall system delivered structural stability, durability, and optimized performance, meeting NHAI’s stringent quality and safety requirements.
By providing a complete RSW package — from design to supply — TechFab India demonstrated its ability to deliver innovative, cost‑effective, and sustainable solutions for large‑scale national highway infrastructure projects.
