Experimental Pullout Capacity of Screw Piles in Dry Gypseous Soil

Screw piles are widely used in supporting structures subjected to pullout forces, such as power towers and offshore structures, this research investigates their performance gypseous soil of medium relative density. The bearing capacity displacement a single screw pile model inserted with various diameters (D = 20, 30, 40) mm examined study. the testing had gypsum content 40% bedding density 40%. To simulate lab, physical was manufactured specific dimensions. Three steel helix 40 used, total length 500 mm. is continuous over pile's embedded depth 400 results tests revealed that decreasing diameter (H/D) ratio resulted higher lower corresponding displacement.