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[en] This paper describes and compares results between articles, for this, 4 relevant topics were selected in reinforcements to wood beams of different types and tree origin [1, 2, 3, and 4], found in the literature or status of the Art. On the samples of the literature to be compared, it was considered for the choice that the selected articles have similar approaches and have similar mechanical tests as: tensile strength, resistance to the average flexion, elasticity module analysis, however, a limitation of the work is the fact that the obtained values cannot be bought in an absolute way since the authors and selected referents apply their research on various configurations of wood beams or different species such as Pine, Beech, Alamo and Fir or even the technique and type of fibre to be used in the reinforcement of such fibres as glass, polymer, bamboo, GFRP, and others made from steel, suggesting a percentage comparison of the improvement or efficiency achieved by the applied methods. Concerning the methodological plan it is noted that the selected samples do not use the same units, this is bought according to relative values or percentage of variation according to the type of test, in which a comparison is made with the control sample (beam without backup) and a reinforced or repaired selected beam (which was selected according to the best achieved or as a sample in which the reinforcement is not invasive). The comparison between work referents concludes that these constructive solutions (repair and reinforcement) provide benefits or contributions to the mechanical characteristics of structural elements of wood, shaping an attractive concept for the development of applications in the field of building and civil construction, as: The variation of the elasticity Module, when using a method of repair / reinforcement with organic fibres (the case of Bamboo) is negative . The highest contributions or percentage increases in the elasticity Module and the breakage 126 Module are obtained when synthetic materials are used, for the matter, the GFRP fibre (F. glass + polymer) and the GFRP bar respectively [2 and 3]. The lowest results in the variation of the breakage Module are obtained by using a repair method / reinforcement with glass fibres , however, when using reinforcement with glass materials plus bar polymers, this reaches the highest value on the MOR . The wood beam (Abeto laminate) reinforced with steel bars  represents the highest result of bending resistance
[en] Considering that housing is the place in which the human being spends most of his life time, the treatment and study of environmental conditioning in this one is of the utmost importance, for the case of the investigation, will be on the appropriate natural light conditioning considering the solar geometry, is this case of the tropic. The duty aims to study natural lighting in the houses of PREVI in Lima Peru, proposals by the Spanish architects José Luis Íñiguez de Ozoño to then apply them to the Madrid context, since, these were projected apparently considering a solar path similar to that of the Iberian peninsula but not to that of the original site where they are located (tropic of Capricorn), this may be due to legislation which did not provide for or require compliance with light aspects in the building, and even today, the national regulations on Peruvian buildings are questionable and at present there are still faults in the field of natural lighting.
[en] The passive design represents a solution to the energy issue in dwellings. We should highlight the existence of several elements that take belong to the field of passive design. This work aims to study de relation between the implementation of a passive design plus an active- passive design (use of renewable energy) to apply on a dwelling and the resulting energy saving. The object of study is a 100 sq. meter dwelling placed in the top floor of a seven story building in Villaverde (Madrid). To begin Design Builder software  was used, that reaches just up to energy consumption issues. In order to know the contributions about energy saving, a comparative analysis between both (original and modified) Design Builder models. 3D models in Revit and SketchUp were done in order to make a preliminary analysis. Then a passive and an active- passive designs were chosen and keeping in mind the features of the base dwelling, using Design Builder software, for a first approach and analysis of the original model and the proposed one. At the calculation phase original model’s energy requirements were observed in order to be later compared to those of the modified model...
[en] The building sector is one of the largest producers of waste on the planet, however, the growing depletion of natural resources and the exponential increase in greenhouse gas emissions in industrial sectors, is having an impact on the search for new solutions constructive more respectful with the environment. There are many processes in the construction sector that are being influenced by awareness and responsibility, in the interest of greater sustainability and less environmental impact on the planet . Based on this sustainability in the construction, many studies have deepened the recycling and reuse of demolition construction waste. This is the case of recycled aggregates, which have been incorporated into the manufacture of mortars by partially or completely replacing the natural aggregate, showing good results and demonstrating that it is possible to incorporate them into the sector  . The present study studies the viability of incorporating recycled aggregates in the elaboration of bastard mortars made with two types of binders in equal parts, cement and lime. For this, the complete replacement of the natural aggregate by ceramic recycled aggregate has been carried out, with and without the addition of fibres. Two types of dosages have been carried out in 1: 3 and 1: 4 proportions, as well as, reference test pieces, adding to the mortars made with recycled aggregate five types of fibres, performing retraction, tensile, compression and hardness tests according to the brand name. current regulations. So far, the results show that the addition of fibres represents a significant improvement in bastard mortars of 1: 3 ratio, while in the 1: 4 dosage they show a negative efficiency. In addition, the incorporation of lime in the mortars has a positive effect, decreasing the retraction in the samples, an effect that is even better with the addition of fibre.
[en] At present, building is considered one of the most polluting activities , however, the sector is becoming aware and taking responsibility for the impact it generates throughout the life cycle of buildings . In the development of the idea of sustainability in the construction, it has been investigated in studies related to the improvement of the conditions of comfort and improvement of the quality of life of the people. In this sense, there are many studies found that intend to incorporate sepiolite for its properties in various materials for the absorption of formaldehydes . Therefore and in view of the results obtained by other authors, the design of a prefabricated panel for indoor false ceiling is proposed. The base material of this panel will be a plaster with sepiolite load in its composition to get it to help improve the indoor air quality of the homes in which it is installed. To achieve the objective, an experimental plan has been developed, divided into three phases: In the first phase, gypsum and plaster were used, following the technical prescriptions of Norma UNE-EN-13279: Yesos de construcción y conglomerantes a base de yeso para la construcción . Said norm, specifies the requirements that this type of material must comply with in terms of hardness, bending and compression, which are the parameters taken into account for this study...