Comparison of practical results by calculations of settlement of foundation using statutory literature and computing systems SCAD, Robot Structural Analysis, and realizingfinite element method. We did research on several versions of calculations for shallow foundations for newels of unique building-aqueduct of outlet channel of Atomic Power Station on loose soil. We performed design models and method of calculations of settlement and tension under newels of aqueduct. We showed differences of computing chain for every computing system. There are showed design diagrams of building and gotten from results of computing of isofield settlement for histogram of apparent differential settlements of newels by bays. We made analytical research of similar works, precision of results and decisions and analysis were made on results gotten from computing systems