Development of the methodology of the design decision searching in the process of structural metalwork design

The design decision is usually a synthesis of various requirements to the construction object. The main difficulty is to approve the solution results of all the subtasks, because these various requirements often contradict each other. In the article the existing approaches to design solutions searching for steel structural designs are considered, features of standard and individual design are specified. The associative method of choosing the design decision is offered. The process of search is directed in order to receive favorable coincidence of design situations, current and implemented earlier and to apply the approved decisions. In order to consider the greatest possible quantity of combinations of design solution for structural designs in the article it is offered to create a tree of enumeration of possibilities for decisions, in case of which the possible values of decision parameters vary. The algorithm of searching the design decision is shown by a method of a tree of search creation. Three levels of solution for a problem of steel structural designs are thus described. Also the question is raised of the effectiveness of padding expenses for creating the complete tree of search of options, their analysis and assessment