Instead of definitions and abstractions, applied mathematics deals with specific calculations of real things. For example, calculations of floor area, wall area, amount of material and subsequently the price calculation. All this used to be done manually, today the engineers are helped by BIM, which can calculate all the necessary things immediately.
BIM stands for Building Information Modelling. It is a digital model of a functional building that contains all the information about the building for its design, construction, operation, and even its demolition. Traditional project documentation depends on 2D technical drawings (situations, floor plans, sections, etc.) and text supplements (technical reports, calculations, specifications, data sheets, etc.). Due to frequent changes, it is usually neither complete nor correct. The BIM model is still current, and in addition to the 3D model, it allows you to assign other necessary information, metadata, such as product type, manufacturer, price, or other necessary and useful information to each building element. Similar to mp3, we have the name of the song, the album, the name of the artist or even its lyrics.