From the laser scanning data to as- built BIM model

Abstract

Ovim radom predstavlja se novi pristup koji je na velika vrata ušao u AEC (Architectural, Engineering and Construction) sektor. Building information modeling (BIM), kao način upravljanja cijelim procesom životnog ciklusa građevine od razvoja preko građenja do uporabe, renovacije ili prenamjene, omogućio je novi pogled na oblikovanje ažurnije 3D projektne dokumentacije. BIM postaje ne samo želja pojedinih investitora i izazov pojedinim dizajnerima već standard koji će u narednih nekoliko godina biti temelj prostornog planiranja u okviru održivog razvoja. Mnogi stručnjaci AEC industrije tvrde da se događa prijelaz sličan onome prije 30-ak godina kada se prelazilo s papira u CAD (Computer-aided Design) samo što se sad prelazi na inteligentne BIM modele. Postavlja se pitanje koja je uloga geodeta i geoinformatičara u ovoj evoluciji tržišta, odnosno promjeni paradigme upravljanja prostornim podacima te ima li za nas mjesta u ovom novom pogledu na prostornu infrastrukturu. Naravno da ima, ali o nama samima ovisi koliko ćemo se prilagoditi toj promjeni i iskoristiti naša prostorna znanja i vještine. Naime, nove tehnologije, među kojima i lasersko skeniranje, dobivaju sve veći značaj u ovom segmentu, a upravo time i naša struka sve važniju ulogu i vrijednost. Čovjekova svijest o zaštiti ekosustava i kulturne baštine sve više potiče korištenje postojećih objekata, tj. njihovu prenamjenu. Jasno da je za oblikovanje modela buduće željene uporabe prije svega potrebno napraviti modele postojećeg stanja te imati ključne, primjereno kvalitetne i cjelovite prostorne podatke koje je potrebno prikupiti što točnije, efikasnije i jeftinije. Kao dio ovog rada prikazana je i uporaba dobivenog BIM modela postojećeg stanja obiteljske kuće za analizu energetske učinkovitosti.This paper presents a new approach which has the largest entry in the AEC (Architectural, Engineering and Construction) sector. Building Information Modeling (BIM) as a way of managing the entire life cycle process of a building, from development through construction to use, renovation or reuse with a completely new view on creation of 3D documentation. BIM is not only the desire of individual investors and a challenge for individual designers, but a standard which in the next few years will be the basis for spatial planning in the framework of sustainable development. Many specialists claim that in AEC industry the transition similar to the one from 30 years ago, when a transfer from paper to CAD occurred is happening again, but now from CAD to BIM intelligent models. The question is: what is the role of surveyors and geoinformation experts in this evolution of the market and the change of paradigm for spatial data management, and, also, whether there is a place for surveyors in this new spatial infrastructure paradigm shift. Of course there is, but it is up to us to adapt to this change and take advantage of our spatial skills and knowledge. Specifically, new technologies, including laser scanning, are gaining an increasing importance in this segment, and with it, consequently, our professions role and value is also rising. Human consciousness about protecting ecosystems and cultural heritage is increasingly encouraging the use of existing facilities, i.e. their reuse, but with the preservation of their cultural and historical features. It is clear that for creation of models for future use, models of current conditions need to be made, prerequisite of which is collection of essential and comprehensive spatial data of appropriate quality as accurately, efficiently and less costly as possible. As part of this paper an example of as built BIM model for energy efficiency analysis was made