A PhD research in the Department of Civil Engineering at the College of Engineering at the University of Basrah (Evaluation and development of available methods for calculating the bearing capacities of submerged piles in the Basrah soil) by the student Mushtaq Rashid Daham. For the area of overlap between the pile and the surrounding soil during loading up to the maximum load condition in order to obtain results and recommendations that ensure determining the best method for calculating the true endurance of the pile and because of this economic return on the costs of facilities by excluding conservative methods or that are not commensurate with the nature of Basrah soil The study covered the species The most common of the pillars in the city of Basrah are the precast concrete piles and the distance by hammers and the excavation and on-site casting piles. Twenty projects implemented in the city of Basra were selected. Their facilities are based on the foundations of piles of both types to be used as real data sources for the purpose of comparison and verification. The ability of Davison; Jane Hansen (80) was studied. 90%-90%) Debeer, Fulrb & Hoy, Butler & Hoy; Van der Veen: The net load corresponding to the landing is (0.25 in) ; And Rollberg, on deducing the maximum load from the results of the pile load tests in the projects under study. The finite element analyzes showed good agreement with the measured values. They generated failure loads mostly similar to those obtained from the Rollberg method for the hammer piles, and high values for the drilling piles. Finite element analyzes reflected a localized decline An amount of (2%-3.2%) of the length of the pile cross section to give the maximum lateral casing resistance of the hammering piles (0.6%,1.8%) of the pile diameter of the drilling piles
