Bearing Capacity of Shallow Footing on Compacted Filling Dune Sand Over Reinforced Gypseous Soil

Existence of these soils, sometimes with high gypsum content, caused difficult problems to the buildings and strategic projects due dissolution leaching by action waterflow through soil mass. In this research, a new technique is adopted investigate performance replacement geosynthetic reinforcement materials improve gypseous behavior experimential set up manufactured loaclally specially for work. A series tests were carried out using steel container (600*600*500) mm. square footing (100*100) mm was placed at center top surface bed soil. The results showed that most effective thickness dune sand layer geotextile interface, within tested range, found be almost equal width foundation. Therefore, under depth, reinforced geogrid geotextile. It can shown (Collapse Settlement Reduction Factor) increases (72%) when two layers one depth footing. addition, bearing capacity (1.5-2.0) time concentric loads (2.5-3) eccentric after