Although the presented proposals of indirect connections between the panels with the metallic profiles and the establishment of a window / door panel were consistent and possibly viable , it would be necessary the development of a constructive technique different from that used by specialized construction companies in this constructive system in Brazil . The constructive techniques used by these construction companies for the production of dwellings in LWF were recognized by the responsible authority of projects approval from Brazil , through a legal process . Any different technique needs official recognition of its use viability in the production of houses in the country . In the present study context , the proposal would demand human , material and financial resources for its recognition , which could hamper the continuity of the project . Thus , it was defined as a guideline the use of the constructive practices adopted by construction companies specialising in the LWF building system in the country . Windows in commercial dimensions started being considered in product design instead of window panels . Arrangements of studs as recommended in the manuals consulted for constructions in the LWF were adopted for tying the wall panels at corners and partitions intersections . The three-dimensional virtual modelling of the product , with all the panels ’ components , showed other significant problems of the system relative to the high waste rate . The panel sheathing boards cutoff in the opening areas , create a wide variety of boards formats . This happens due to the need of displacement that creates different cuts in each of the openings of the dwelling due to its positioning ( Figure 8 ).
Figure 8 : Variations of panel ’ s shapes and dimensions
From the virtual prototype it was possible to quantify a number of entire and cut boards , which enable to quantify the amount of material waste . The material applied in the walls panels was calculated considering the cutoffs of each board variation . The waste resulted from the difference
342 ZEMCH 2015 | International Conference | Bari - Lecce , Italy