Projeto de sistemas prediais hidráulicos em BIM: adequação dos métodos de cálculo às normas brasileiras através da programação visual

Abstract

The two-dimensional MEP (Mechanical Electrical and Plumbing) projects, in general, lack information causing unforeseen and additional costs in the construction site. One solution to this is the adoption of Building Information Modeling (BIM), which has the potential to bring clearer and more accurate information to the project, and, of course, a higher quality product. However, BIM suffers from barriers to its full use among experts in the field. One of the obstacles pointed out in the text is that, in BIM, the working time is longer and the sizing does not correspond to that presented in the Brazilian standards (NBR's). Therefore, the objective of this researchis to make feasible the use of BIM tools, in this case of Revit, for the designing according to Brazilian regulations for domestic cold water systems through visual programming. To do so, the calculation methodology is performed in three programming routines: one for the sizing of the building feeder and reservoirs. Another one for dimensioning the pipes according to their Fixture Units for maximum probable consumption. And, lastly, for the verification of minimum residual pressure in the critical section analyzed. Finally, it is expected to make the process of elaboration of MEP projects more efficient, modern and competitive against the traditional platform CAD and, thus, this work becomes important catalyst in the migration of the traditional technology for the BIM in the use of MEP projects through the use of visual programming.