ZEMCH 2015 - International Conference Proceedings | Page 523

This is why the prevalent material in the two structures is wood, used in planks along with a skeleton of steel posts or load-bearing panels, supported by curtain walls and completed with finishes utilizing whenever possible plant fibers and dyes that are not hazardous to health and that respect the environment. In terms of energy and environmental compatibility wood indeed has optimal characteristics in all phases of its life cycle, from production of raw materials, to processing, disposal and recycling. (Figs. 1a, 1b, 3) Idea108 housing prototype The house is inspired by the essential volumes of typical rural residences in Veneto, based on rectangular buildings with pitched roofs. This option is well suited to the logic of the constructive system for idea 108, since it offers a good flexibility of use and the possibility of expansion over time. The supporting structure, realized according to Idea 108‘s modular dry construction system and devised to meet seismic criteria, is formed by: - structural steel pillars; - infill panels consisting of a wooden lamellar frame braced with OSB/3 boards, covered by insulating material with a layer of plaster, used for walls and roofing. The panels integrate an air chamber with constant ventilation to improve comfort and health in the building. The size of each wall module is 108 cm in width and 432 cm in height. This allows for the creation of a single full-height space that can be organized on two levels. The particular arrangement of the bracing elements guarantees the presence of a continuous ventilation chamber along the perimeter walls and the passage of air from foundations to covering, thus realizing an organism with a controlled microclimate (European Patent No. 07,866,756). The other elements are casing, customizable on the basis of the building’s location and the taste of the owner, and functional facility blocks. The cost of rough construction (foundations + structural elevations + facade insulation + exterior casing and plaster) in Italy varies between 140 and 200 €/sqm, about half of a building constructed with traditional systems. The assembly time for rough construction of a 100 square meters building is estimated at about 2 working weeks with the use of a team of three persons. This housing prototype lends itself to the realization of single- and two-family houses and to the completion of small and medium-sized urban fabrics. (Figs. 2, 4, 5) Dadomus Housing Prototype The project develops the idea of the ​​ Mediterranean house consisting of a summation of rooms that can compose complex structures with infinite configurations, suitable for expansion over time. The basic element of the system is a cube (base m. 4.46; height 4.20) interspersed with connecting elements made of wood and glass that make the structure of the house particularly reversible and permeable, promoting interaction between the home environment and the exterior space, which benefits natural ventilation and interior comfort. The repetition of simple geometric forms and the alternation of full and void spaces (paths, patios, gardens), generates well-ordered organisms that can be combined with each other with a certain freedom and exploit the different available views. The main structure of the house is composed of: • Portals (frames) and wood studs; • Wall panels of spruce wood of the SOLIGNO (180mm thick) type, formed by two layers of solid finger-jointed wood planks, suitably dimensioned and ready for complete assembly of door and window openings; • Bearing panels for ceilings and coverings in solid spruce. The insulation panels and the exterior finish, as in all the components of the system, rule out all synthetic materials in favor of natural fibers and wood fiber panels made with untreated waste Study of modular, flexible, customizable housing models for mass production 521