1. A system for generating a building information modeling (BIM) geometry breakdown structure, comprising: a geometry breakdown system (GBS) range setting module configured to set a range of a GBS based on previously generated BIM framework variables; a GBS element definition module configured to generate “standard information breakdown property information” that is used to manage work-type breakdown and location breakdown, to generate “project numbering system (PNS) property information” that is used to manage a work breakdown system (WBS), a cost breakdown structure (CBS), and a standard-method-of-measurement (SMM) breakdown structure (MBS), and to generate “GBS property information” that is used to define geometric information (property values of a 3D-CAD or an IFC viewer program); and a GBS geometric object coding module configured to match geometric objects to the “standard information breakdown property information” and the “PNS property information” generated by the GBS element definition module, and to assign numbers corresponding to the “GBS property information” to the matched geometric objects.