Some aspects of the “wall in the ground” engineering process

This study is aimed at finding technological solutions for optimising the installation process of load-bearing and enclosing structures below the elevation grade using the “wall in the ground” method. Design features of the method have been studied and solutions that minimise the time and material costs of building a “wall in the ground” have been developed. To obtain a full-assembled version of reinforced concrete foreshaft, a constructive solution has been developed for joining average prefabricated composite elements of rein-forced concrete foreshaft at an angle. The foreshaft corner prefabricated element is a structure in the form of two vertical walls, monolithically connected with a horizontal plate - a collar. The connection of the fore-shaft elements is carried out by means of a spline connection and embedded parts. To protect the corners of the foreshaft elements, metal corners are mounted into its concrete body. The monolithic modification of a foreshaft structure involves significant labour costs associated with the implementation of additional measures for the work conducting at low negative and high positive ambient temperatures. Prefabricated version allows to minimis