Use of reinforced soil wall solutions at the MNB structure helped overcome the presence of weak cohesive soil, managed differential settlement, and ensured uniform pressure distribution.

The National Highways Authority of India undertook the construction of an eight-lane carriageway at seven different chainages along the Delhi–Vadodara access-controlled greenfield alignment (NH-148N) under the Bharatmala Pariyojana. The project required the construction of a retention structure up to a maximum height of 20 meters for the bridge approaches and closing walls. The site presented multiple challenges, including founding strata composed of weak cohesive soil and the presence of a major river crossing. Moreover, the structure needed to withstand both static and seismic loads while ensuring long-term stability in a flood-prone environment.

To overcome these challenges, Maccaferri’s comprehensive solutions were adopted. Modular Terramesh® units with high-strength Paralink® geogrids as primary reinforcement were designed to create a flexible and monolithic reinforced soil wall system capable of accommodating differential settlement and ensuring uniform pressure distribution. Being an MNB structure, the retention design also accounted for the hydrological parameters of the river. Ground improvement was carried out through soil replacement and the installation of high-strength Paralink® geogrids, while Reno Mattresses provided robust protection against toe erosion.

Read more about our retaining wall solutions click on below link: https://www.maccaferri.com/in/products/terramesh/

 Or write us at [email protected].