zilian perception of value;( 4) there are no restrictions of use compared to conventional masonry( fixing shelves, using water to wash the house, internal and external cladding);( 5) potential for cost reduction due: to the gain in scale and rate of construction, allowing an execution time much smaller than the conventional building system; to the prefabricated walls provided by the plant, including electrical systems, hydraulics and windows; to the less likely delays due to weather; and to the greater control of labor;( 6) the system has a lower environmental impact, adopts renewable materials and causes a 85 % waste reduction on the site construction.( Tecverde 2015) The partner company built on the university campus one pilot HU( Housing Unit). Some important conclusions were drawn:( 1) despite the panel erection speed( 6 hours), the finishing proved to be much slower, because of the traditional techniques applied, especially the ceramic tile wall and floor finishing;( 2) although the trusses were prefabricated, roofing was considerably slow because ceramic tile laying was also made handcrafted. Because of the mentioned observations, it was decided that the design would be developed from two premises:( 1) to establish a precast sanitary module that includes hydraulic-structured wall for the kitchen;( 2) a prefab and quick assembling alternative for roofing. These guidelines became the directives to the architectural design.( Figure 3)
Figure 3: Generating lines to the architectural design
4.2 Plot dimensions and land division In the earlier workshops, important guidelines regarding implementation have been established. The instruments to capture the user perception were a key point for the development of the design: the preference for detached homes rather than semi-detached ones. Factors such as greater privacy and sound insulation were important as well as the desire for identity. Residents had a perception that a detached unit is equivalent to“ half house”. In addition, during the workshop with experts, it was found that, particularly in terms of fire security, semi-detached homes would be advisable. The workshop with the local housing council team was fundamental to the definition of the land configuration. Brazilian law establishes 125.00m2 as a minimum plot of land for LIH. Based on POE, it was found that this area has been insufficient to allow future expansion and to ensure the desired of privacy, especially when the plot is narrow. At the workshop, the team announced that the future policy would be to broaden the minimum land area of 150.00m2 This area was adopted as a reference to the design in this research.
552 ZEMCH 2015 | International Conference | Bari- Lecce, Italy