The National Highway NH-8 (the new NH-48) extends from Mumbai to Delhi. Along the route, it also connects two major cities of Gujarat, Vadodara and Ahmedabad. NHAI required that the 102.30 km stretch between Vadodara and Ahmedabad be converted from four lanes to six lanes as part of its expansion programme for NH-48.

Strata advocated reinforced soil structures since they are faster to construct and cost-effective. The basic principle is to build two parallel reinforced soil structures retaining earth backfill in between. The reinforced soil walls were constructed with locally available non-plastic soils, and StrataGrid™ polyester knitted geogrids as soil reinforcement. The fascia comprised of StrataBlock™ precast segmental concrete blocks. The StrataBlock™ with StrataGrid™ system is highly cost-effective.

Strata was present throughout the project life-cycle: manufacturing StrataGrid™ at its state-of-the-art plant, providing detailed designs by its highly qualified geotechnical engineers, and finally constructing the walls using on-site casting machines.

Strata’s innovative solution resulted in an economical, fast and smooth construction of the Reinforced Soil wall.

Strata is the only company that could provide the turn-key solution required to construct 46 structures for a project.