<p>Providing, preparing and laying of geogrid crated apron 1 m x 5m, 600 mm thick including excavation and backfilling with baffles at 1 m interval, made with geogrids having, joining sides with connectors/ring staples, top comers to be tie tensioned, placing of suitable cross interval ties in layers of 300 mm connecting opposite side with lateral braces and tied with polymer braids to avoid bulging, filled with stone with minimum size of 200 mm and specific gravity not less than 2.65, packed with stone spalls, keyed to the foundation recess in case of sloping ground and laid over a layer of geotextile to prevent migration of fines, all as per approved design and direction of E-I-C</p>