Intelligent document generation system for construction planning

A computer-based system for generating construction plan documents using expert systems is described. The system is composed of multiple expert systems, a CAD system, databases and a word-processing system which binds the expert and CAD systems. Each expert system includes information for an element of construction planning, such as method and machine selection, scheduling and cost estimation. These expert systems can be directly called from within a page of the document displayed on the screen and the results inferred by the expert systems are automatically incorporated back into the document. The system includes a consistency check procedure that checks contradictions between results inferred by several expert systems and provides the user with information to maintain consistency throughout the document