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  • A breakdown of energy consumption in an underground station

     Casals Casanova, Miquel; Gangolells Solanellas, Marta; Forcada Matheu, Nuria; Macarulla Marti, Marcel; Giretti, Alberto
    Energy and buildings
    Vol. 78, p. 89-97
    DOI: 10.1016/j.enbuild.2014.04.020
    Date of publication: 2014-08-01
    Journal article

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    Underground transportation systems are big energy consumers and have significant impacts on energy consumption at a regional scale. The literature has revealed that the energy consumption for non-traction purposes may be of the same magnitude as the energy used to move rolling stock, and in some cases even greater. However, most of the research conducted so far has focused on the energy demand of rolling stock. This paper investigates the electricity consumption of an underground metro station using data from on-site surveys and measurements. With an average consumption of 217.64 kWh/m(2)/year, the breakdown revealed that the lighting system dominated the underground station's energy consumption (37%). Illuminated advertising signs were found to be responsible for 14% of the total energy consumption, and ventilation accounted for another 14%. The rest of the energy consumption was attributed to systems such as mobile phone signal antenna (12%), the vertical transportation system (8%) and small power devices (5%). Accurate information on energy consumption for non-traction usage is useful for future implementation of energy conservation measures in underground stations, which could result in a reduction of operating costs in the long run.

  • Assessment of construction defects in residential buildings in Spain

     Forcada Matheu, Nuria; Macarulla Marti, Marcel; Gangolells Solanellas, Marta; Casals Casanova, Miquel
    Journal of civil engineering and management (Spausdinta)
    Vol. 42, num. 5, p. 629-640
    DOI: 10.1080/09613218.2014.922266
    Date of publication: 2014-06-11
    Journal article

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    The building industry is noted for its repeated building defects causing cost increases and time delays during construction. In Spain, despite the Ley de Ordenación de la Edificación (Building Regulation Act), which establishes a general framework to promote overall building quality, construction defects in residential buildings remain a pervasive problem. An analysis of 3647 construction defects is presented which identified the location within the building, subcontractors and building element in 68 residential building developments undertaken by two large Spanish contractors. The research reveals that the most common defects that arise during construction are related to the stability of the structure and inappropriate installation of roofs and facades. These technical faults are caused by poor workmanship rather than by the quality of the materials or products used. By comparing these results with a previous study on defects after handover, it can be concluded that while the nature of defects during construction is basically technical, at handover it is aesthetic or technical.

  • Predicting on-site environmental impacts of municipal engineering works

     Gangolells Solanellas, Marta; Casals Casanova, Miquel; Forcada Matheu, Nuria; Macarulla Marti, Marcel
    Environmental impact assessment review
    Vol. 44, p. 43-57
    DOI: 10.1016/j.eiar.2013.08.004
    Date of publication: 2014-01
    Journal article

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    The research findings fill a gap in the body of knowledge by presenting an effective way to evaluate the significance of on-site environmental impacts of municipal engineering works prior to the construction stage. First, 42 on-site environmental impacts of municipal engineering works were identified by means of a process-oriented approach. Then, 46 indicators and their corresponding significance limits were determined on the basis of a statistical analysis of 25 new-build and remodelling municipal engineering projects. In order to ensure the objectivity of the assessment process, direct and indirect indicators were always based on quantitative data from the municipal engineering project documents. Finally, two case studies were analysed and found to illustrate the practical use of the proposed model. The model highlights the significant environmental impacts of a particular municipal engineering project prior to the construction stage. Consequently, preventive actions can be planned and implemented during on-site activities. The results of the model also allow a comparison of proposed municipal engineering projects and alternatives with respect to the overall on-site environmental impact and the absolute importance of a particular environmental aspect. These findings are useful within the framework of the environmental impact assessment process, as they help to improve the identification and evaluation of on-site environmental aspects of municipal engineering works. The findings may also be of use to construction companies that are willing to implement an environmental management system or simply wish to improve on-site environmental performance in municipal engineering projects.

  • Building stock¿s vulnerability to summer overheating and strategies for improving its resilience trough codes, standards and practices

     Gangolells Solanellas, Marta; Casals Casanova, Miquel; Forcada Matheu, Nuria; Macarulla Marti, Marcel
    European Conference on Product and Process Modelling
    p. 657-663
    Presentation's date: 2014-09-16
    Presentation of work at congresses

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    The main objective ofthis paper is to study the resilience of current Spanish residential building stock to climate change impacts. Results showed that 72% of current residential building stock in Spain is not performing properly according to current climate conditions. During the 1981 - 201 O period, mean annual degree days based at l 5ºC diminished in 74% of Spanish provincial capitals, with an average rate decrease of 10.1 % in relation to the 1950-1979 period. Significant accelerating positive trends in cooling degree days and important decreases in heating degree days were found in the twenty-first century. Strategies and measures to support climate change adaptation of existing and future built environments through building codes and standards have also been explored.

  • Energy savings in underground metro stations through the implementation of an environmental aware control system

     Casals Casanova, Miquel; Gangolells Solanellas, Marta; Forcada Matheu, Nuria; Macarulla Marti, Marcel
    European Conference on Product and Process Modelling
    p. 431-436
    Presentation of work at congresses

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    This paper is aimed at describing an intelligent environmental aware energy management system for underground stations, developed under the auspices of the European project Sustainable Energy mAnageMent for Underground Stations (SEAM4US) and implemented in a pilot underground station. With an average consumption of 217.64kWh/m2·year, the breakdown revealed that the lighting system dominates the energy consumption of the station followed by illuminated advertising signs and ventilation. The SEAM4US energy management system has been designed to provide smart autonomous control ofthe ventilation, lighting and vertical transportation trough the core, monitoring and control subsystems. Several control policies were simulated and expected energy savings were found to range between 11 % and 20% ofthe total energy consumption.

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    Reducing energy consumption in public buildings through user awareness  Open access

     Macarulla Marti, Marcel; Casals Casanova, Miquel; Gangolells Solanellas, Marta; Forcada Matheu, Nuria
    European Conference on Product and Process Modelling
    p. 637-642
    Presentation of work at congresses

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    Building sector is contributing to the 36% of the C02 emissions in Europe, and consurning the 40% of final energy consurnption. In this context this paper presents a new approach developed under the ENCOURAGE project to carry out the user awareness. The proposed user awareness is based on a set of KPls, and done at two levels: energy mangers and university campus users. The KPfs are displayed to the energy managers using a web-platform. With that information energy managers are able to identify actions and control algorithms to reduce the energy consun1ption. In the other hand, the university campus users awareness it is done sending messages to the user through the Twitter platform. A set of messages are defined, andan algorithm decides which messages have to be published in each moment. The aim is to promote good practices in the use ofpublic buildings.

  • Qüestionari de satisfacció MoBuild

     Forcada Matheu, Nuria; Macarulla Marti, Marcel; Casals Casanova, Miquel; Gangolells Solanellas, Marta
    Date: 2013-10
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  • Post-handover housing defects: sources and origins

     Forcada Matheu, Nuria; Macarulla Marti, Marcel; Gangolells Solanellas, Marta; Casals Casanova, Miquel; Fuertes Casals, Alba; Roca Ramon, Xavier
    Journal of performance of constructed facilities
    Vol. 27, num. 6, p. 756-762
    DOI: 10.1061/(ASCE)CF.1943-5509.0000368
    Date of publication: 2013-12-01
    Journal article

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    In Spain, the high levels of inexperienced workers and the long chains of subcontracting contribute to poor quality of dwellings. Although the Ley reguladora de la subcontratación en el Sector de la Construcción (Subcontracting law) has established quality measures, the number of customer complaints is still increasing. In this paper, a total of 2351 post-handover defects derived from four Spanish builders and seven residential developments are classified according to their source and origin. The research reveals that the most common defects identified by customers at post-handover were derived from bad workmanship, and were related to construction errors and omissions. Typical defects were found to include incorrect installation, appearance defects, missing item or task mainly related to finishing and considered to be minor. No defects were caused by poor design as they are mainly detected and resolved during construction, or become apparent after some years of use. This study demonstrates the negative impact of re-doing defective work during the final stages of construction, and provides knowledge to define measures to improve the quality of the finished buildings, such as understanding customer expectations and preferences, training programs for workers, specialization of subcontractors and tighten the external controls prior to handover.

    In Spain, the high levels of inexperienced workers and the long chains of subcontracting contribute to the poor quality of dwellings. Althoughthe Ley reguladora de la subcontratación en el Sector de la Construcción (subcontracting law) has established quality measures, the number of customer complaints is still increasing. In this paper, a total of 2,351 posthandover defects derived from four Spanish builders and seven residential developments are classi fi ed according to their source and origin. The research reveals that the most common defects identi fi ed by customers at posthandover were derived from bad workmanship and were related to construction errors and omissions. Typical defects were foundtoincludeincorrectinstallation,appearancedefects,andmissinganitemortaskmainlyrelatedto fi nishingandconsideredtobeminor.No defects were caused by poor design because they are mainly detected and resolved during construction or become apparent after some years of use. This study demonstrates the negative impact of redoing defective work during the fi nal stages of construction and provides knowledge to de fi ne measures to improve the quality of the fi nished buildings, such as understanding customer expectations and preferences, training programs for workers, specialization of subcontractors, and tightening external controls prior to handover.

  • Knowledge management perceptions in construction and design companies

     Forcada Matheu, Nuria; Fuertes Casals, Alba; Gangolells Solanellas, Marta; Casals Casanova, Miquel; Macarulla Marti, Marcel
    Automation in construction
    Vol. 29, p. 83-91
    DOI: 10.1016/j.autcon.2012.09.001
    Date of publication: 2013-01-01
    Journal article

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    Knowledge management (KM) has been studied extensively in recent years. Some consider knowledge to be the most strategically important resource for any company, but the fragmented, project-based and task-oriented nature of construction work makes it more difficult to implement KM in this sector. This paper presents a survey of perceptions of KM implementation in the Spanish construction sector and compares the results obtained from design and construction firms. Data were collected from the leading civil engineering companies in Spain. The survey found that the Spanish construction industry is aware of the benefits of KM but that systematic KM is not generally implemented. The findings clearly demonstrate that changes in organizational culture are critical to successful KM. The survey also revealed some distinctions between the KM perception of design firms and that of construction firms.

  • Standardizing housing defects: classification, validation and benefits

     Macarulla Marti, Marcel; Forcada Matheu, Nuria; Casals Casanova, Miquel; Gangolells Solanellas, Marta; Fuertes Casals, Alba; Roca Ramon, Xavier
    Journal of construction engineering and management
    Vol. 139, num. 8, p. 968-976
    DOI: 10.1061/(ASCE)CO.1943-7862.0000669
    Date of publication: 2013-08
    Journal article

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    Defects produce economic and temporal deviations in construction projects. Although learning from past experiences can help reduce defects and their consequences, usually data is not easily available, or is poorly structured and difficult to analyze. Several structured classification systems for defects exist, but regionally specific construction activities make the data unviable for research use. This paper presents the development and the validation of a defects' classification system for the Spanish housing sector. From the analysis of the existing defect classification systems, a first draft was developed to be discussed and improved in a series of workshops done by a panel of experts. Afterwards, the final classification was validated by experts' interviews. The experts evaluated the epistemological adequacy and reusability of the proposed classification system. The results demonstrate the suitability of the classification system. In addition the validation revealed that the classification can be implemented in tracking systems, and it can be used to analyze defects in the Spanish housing sector. Finally, the classification was used in a case study to analyze the real use and it demonstrated the potential uses of the classification.

  • An environmental impact causal model for improving the environmental performance of construction processes

     Fuertes Casals, Alba; Casals Casanova, Miquel; Gangolells Solanellas, Marta; Forcada Matheu, Nuria; Macarulla Marti, Marcel; Roca Ramon, Xavier
    Journal of cleaner production
    Vol. 52, p. 425-437
    DOI: 10.1016/j.jclepro.2013.02.005
    Date of publication: 2013-08-01
    Journal article

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    Despite the increasing efforts made by the construction sector to reduce the environmental impact of their processes, construction sites are still a major source of pollution and adverse impacts on the environment. This paper aims to improve the understanding of construction-related environmental impacts by identifying on-site causal factors and associated immediate circumstances during construc- tion processes for residential building projects. Based on the literature and focus group fi ndings, we have developed a construction-related Environmental Impact Causal Model consisting of a process-oriented causal network of thirty-nine environmental impacts, forty- fi ve causal factors and over two hundred causal relationships. It is intended to contribute to a reduction in construction-related environmental impacts on building sites by supporting contractors and other decision-makers in the early identi fi cation of factors that are likely to lead to impacts or to exacerbate their consequences, as well as the later environmental performance evaluation and control. The causal model is validated by investigating over a hundred environmental incidents. Finally, possible methods to improve construction-related environ- mental performance are suggested.

  • Model for enhancing integrated identification, assessment, and operational control of on-site environmental impacts and health and safety risks in construction firms

     Gangolells Solanellas, Marta; Casals Casanova, Miquel; Forcada Matheu, Nuria; Fuertes Casals, Alba; Roca Ramon, Xavier
    Journal of construction engineering and management
    Vol. 139, num. 2, p. 138-147
    DOI: 10.1061/(ASCE)CO.1943-7862.0000579
    Date of publication: 2013-02
    Journal article

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    Certifiable management-system standards apply similar management techniques and principles, but each system still tends to have a separate structure in construction companies. Research and practice have demonstrated that management tasks may be duplicated when standards are implemented in parallel. Consequently, integrated management systems are strongly advocated. However, existing literature demonstrates that the integration of planning and control instruments involves a high level of uncertainty. This paper presents an innovative model to enhance the integration of environmental-and health and safety-management systems in construction companies, focusing on the subsystems for identifying, assessing, and operationally controlling environmental aspects and health and safety hazards and using risk as an integrating factor. The findings of this study have direct implications for both designers and contractors because the model helps to explicitly consider on-site environmental impacts and construction-worker safety during the design process and offers on-site guidance to eliminate the remaining impacts and risks or reduce them to acceptable levels. A case study is reported to illustrate the practical use of the proposed model and its benefits.

    Certifiable management-system standards apply similar management techniques and principles, but each system still tends to have a separate structure in construction companies. Research and practice have demonstrated that management tasks may be duplicated when standards are implemented in parallel. Consequently, integrated management systems are strongly advocated. However, existing literature demonstrates that the integration of planning and control instruments involves a high level of uncertainty. This paper presents an innovative model to enhance the integration of environmental- and health and safety – management systems in construction companies, focusing on the subsystems for identifying, assessing, and operationally controlling environmental aspects and health and safety hazards and using risk as an integrating factor. The findings of this study have direct implications for both designers and contractors because the model helps to explicitly consider on-site environmental impacts and construction-worker safety during the design process and offers on-site guidance to eliminate the remaining impacts and risks or reduce them to acceptable levels. A case study is reported to illustrate the practical use of the proposed model and its benefits.

  • Metodología basada en ACV para la evaluación de sostenibilidad en edificios  Open access

     Hernandez Sanchez, Juan Manuel
    Department of Engineering Design, Universitat Politècnica de Catalunya
    Theses

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    Esta metodología está orientada a evaluar el impacto medioambiental de los edificios, su coste económico y su efecto social, teniendo en cuenta todo el ciclo de vida, de una manera sistematizada, flexible, simple, holística y orientada a la comparación de los resultados.Cada edificio tiene sus propias características y la aplicación del análisis de ciclo de vida (ACV) es diferente para cada caso. Pero los edificios también presentan características comunes, como materiales, procesos de construcción, instalaciones, elementos constructivos y uso del edificio. Estas similitudes deberían permitir una fácil comparación entre edificios, especialmente los que son del mismo tipo constructivo. Sin embargo, la interpretación, el objetivo, el alcance y los límites del sistema de un análisis de ciclo de vida hacen que los resultados sean difícilmente comparables entre sí, aunque los edificios a comparar sean semejantes.La metodología estándar de ACV es apta para todos los productos, procesos y servicios. Sin embargo, es muy abierta y requiere que se hagan muchas reiteraciones. La metodología propuesta ajusta la metodología estándar de ACV para su uso exclusivo en los edificios, evitando reiteraciones, adaptándose a todas las maneras de proceder de los usuarios de la metodología, que sirva para todos los edificios y para los diferentes ámbitos de la sostenibilidad. La metodología se compone de cinco fases. En la primera fase se define el sistema y las características generales del estudio. En la segunda fase se reúne la documentación necesaria que se usará en el resto de la metodología. En la tercera fase se procesa esta información contenida en la documentación y se realiza el inventario de datos. En la cuarta fase, utilizando los datos del inventario, se realizan por una parte los cálculos necesarios y por otra el análisis del ciclo de vida. Finalmente en la quinta y última fase se exponen los resultados.También se han realizado tres adaptaciones de la metodología para usos específicos. La primera adaptación es para análisis de alternativas, en el que al variar un parámetro o combinación de parámetros se puede ver qué alternativa es mejor para un cierto propósito. La segunda adaptación es para la rehabilitación, en el que el edificio aún no ha llegado al fin de su vida útil y se desea disminuir el consumo energético y aumentar el bienestar y comodidad de los ocupantes. La última adaptación es para un parque de edificios, que es un conjunto de edificios que conforman un barrio, un distrito, una ciudad, una región, un país o un conjunto de países. La aplicación de la metodología a un caso práctico confirma que la metodología es apta para ser empleada y se obtienen los resultados esperados para la realización del ACV según el método estándar.Un análisis de ciclo de vida adaptado al dominio de los edificios resulta más simple y directo que uno general, llegando a los mismos resultados. La utilización de esta metodología evita una dispersión en la manera de procesar los datos y, junto con la difusión de los datos relevantes de los edificios, permite una mayor facilidad en la comparación de los resultados entre diferentes estudios que apliquen esta metodología.Además, la metodología tiene la utilidad de recoger y organizar la información relativa al edificio. También asiste el proceso de diseño, dejando ver cuáles son los aspectos clave y cuál es su importancia relativa. Por tanto, es considerablemente útil para los actores (promotor, proyectista, propietarios y usuarios) que toman decisiones en la etapa de diseño y que puedan desarrollar estrategias adecuadas a los objetivos propuestos. Esta metodología mejora cada una de las fases del edificio y su conjunto, incrementando la competitividad, la satisfacción social y garantizando la sostenibilidad.

    Esta metodología está orientada a evaluar el impacto medioambiental de los edificios, su coste económico y su efecto social, teniendo en cuenta todo el ciclo de vida, de una manera sistematizada, flexible, simple, holística y orientada a la comparación de los resultados. Cada edificio tiene sus propias características y la aplicación del análisis de ciclo de vida (ACV) es diferente para cada caso. Pero los edificios también presentan características comunes, como materiales, procesos de construcción, instalaciones, elementos constructivos y uso del edificio. Estas similitudes deberían permitir una fácil comparación entre edificios, especialmente los que son del mismo tipo constructivo. Sin embargo, la interpretación, el objetivo, el alcance y los límites del sistema de un análisis de ciclo de vida hacen que los resultados sean difícilmente comparables entre sí, aunque los edificios a comparar sean semejantes. La metodología estándar de ACV es apta para todos los productos, procesos y servicios. Sin embargo, es muy abierta y requiere que se hagan muchas reiteraciones. La metodología propuesta ajusta la metodología estándar de ACV para su uso exclusivo en los edificios, evitando reiteraciones, adaptándose a todas las maneras de proceder de los usuarios de la metodología, que sirva para todos los edificios y para los diferentes ámbitos de la sostenibilidad. La metodología se compone de cinco fases. En la primera fase se define el sistema y las características generales del estudio. En la segunda fase se reúne la documentación necesaria que se usará en el resto de la metodología. En la tercera fase se procesa esta información contenida en la documentación y se realiza el inventario de datos. En la cuarta fase, utilizando los datos del inventario, se realizan por una parte los cálculos necesarios y por otra el análisis del ciclo de vida. Finalmente en la quinta y última fase se exponen los resultados. También se han realizado tres adaptaciones de la metodología para usos específicos. La primera adaptación es para análisis de alternativas, en el que al variar un parámetro o combinación de parámetros se puede ver qué alternativa es mejor para un cierto propósito. La segunda adaptación es para la rehabilitación, en el que el edificio aún no ha llegado al fin de su vida útil y se desea disminuir el consumo energético y aumentar el bienestar y comodidad de los ocupantes. La última adaptación es para un parque de edificios, que es un conjunto de edificios que conforman un barrio, un distrito, una ciudad, una región, un país o un conjunto de países. La aplicación de la metodología a un caso práctico confirma que la metodología es apta para ser empleada y se obtienen los resultados esperados para la realización del ACV según el método estándar. Un análisis de ciclo de vida adaptado al dominio de los edificios resulta más simple y directo que uno general, llegando a los mismos resultados. La utilización de esta metodología evita una dispersión en la manera de procesar los datos y, junto con la difusión de los datos relevantes de los edificios, permite una mayor facilidad en la comparación de los resultados entre diferentes estudios que apliquen esta metodología. Además, la metodología tiene la utilidad de recoger y organizar la información relativa al edificio, lo que permite elaborar un resumen con la función de comunicar. También asiste el proceso de diseño, dejando ver cuáles son los aspectos clave y cuál es su importancia relativa. Por tanto, es considerablemente útil para los actores (promotor, proyectista, propietarios y usuarios) que toman decisiones en la etapa de diseño y que puedan desarrollar estrategias adecuadas a los objetivos propuestos. Esta metodología mejora cada una de las fases del edificio y su conjunto, incrementando la competitividad, la satisfacción social y garantizando la sostenibilidad.

    This methodology is aimed at assessing the environmental impact of buildings, their economic cost and social impact, taking into account the entire life cycle in a systematic, flexible, simple, holistic manner and focused on the comparison of results. Each building has its own characteristics and the application of the life-cycle assessment (LCA) is different in each case. But buildings also have common characteristics, such as materials, construction processes, facilities, building materials and building use. These similarities should enable straightforward comparison between buildings, especially those that are of the same construction type. However, the interpretation, objective, scope and system limits of a life-cycle assessment mean that the results are barely comparable, even if the buildings being compared are similar. The LCA standard methodology is suitable for all products, processes and services. However, it is very open and requires many iterations. The proposed method adjusts the LCA standard methodology for its exclusive use in buildings, avoiding repetition, adapting to all ways of acting from methodology users, and working for all different buildings and areas of sustainability. The methodology consists of five phases. In the first phase the system and the general characteristics of the study are defined. In the second phase the necessary documentation to be used in the rest of the methodology is gathered. In the third phase the information found in the documentation is processed and the inventory data is carried out. In the fourth phase, using the inventory data, the required calculations and analysis of the life cycle are carried out. Finally in the fifth and final phase the results are presented. Three adaptations to the methodology for specific uses have also been made. The first adaptation consists in analysis of alternatives, in which by changing a parameter or combination of parameters, the best alternative for a certain purpose is revealed. The second adjustment consists in refurbishment, in which the building has not yet reached the end of its useful life and it is desired to reduce energy consumption and improve the welfare and comfort of the occupants. The last adjustment consists in dwelling stock, groups of buildings that make up a neighbourhood, district, city, region, country or group of countries. The application of the methodology to a case study confirms that the methodology is suitable for use and that the results are comparable to those using the LCA standard methodology. A life-cycle assessment adapted to the domain of the buildings is as simple and straightforward as a general one, obtaining the same results. Using this methodology a dispersion in the way of processing the data is avoided. The spread of relevant data for the buildings allows for greater ease in comparing results between different studies that apply this methodology. The methodology is useful to gather and organize information about buildings, allowing for the preparation of a summary, with the intention to communicate. It also assists in the design process, highlighting the key issues and what are their relative importance. It is therefore significantly useful for actors who make decisions in the design stage and develop strategies tailored to the objectives. This methodology improves each of the phases of the building process and the whole building, and it increases competitiveness, social satisfaction and ensures sustainability.

  • Defects¿ taxonomy for Mobuild

     Forcada Matheu, Nuria; Macarulla Marti, Marcel; Gangolells Solanellas, Marta; Casals Casanova, Miquel
    Date: 2012-03
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  • Process failures¿ taxonomy validation for Mobuild

     Forcada Matheu, Nuria; Macarulla Marti, Marcel; Casals Casanova, Miquel; Gangolells Solanellas, Marta
    Date: 2012-07
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  • Validation protocol of the ¿process failure¿ classification for Mobuild

     Forcada Matheu, Nuria; Macarulla Marti, Marcel; Gangolells Solanellas, Marta; Casals Casanova, Miquel
    Date: 2012-06
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  • Premi Extraordinari de Doctorat en l'àmbit d'Enginyeria Civil

     Gangolells Solanellas, Marta; Casals Casanova, Miquel
    Award or recognition

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  • Non-conformities management survey for construction companies

     Forcada Matheu, Nuria; Macarulla Marti, Marcel; Casals Casanova, Miquel; Gangolells Solanellas, Marta
    Date: 2012-06
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  • Influence of building type on post-handover defects in housing

     Forcada Matheu, Nuria; Macarulla Marti, Marcel; Fuertes Casals, Alba; Casals Casanova, Miquel; Gangolells Solanellas, Marta; Roca Ramon, Xavier
    Journal of performance of constructed facilities
    Vol. 26, num. 4, p. 433-440
    DOI: 10.1061/(ASCE)CF.1943-5509.0000225
    Date of publication: 2012-08
    Journal article

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    Clients’ lack of involvement in defining quality requirements for dwellings built by developers leads to a perception of poor quality at the time of purchase. The research presented in this paper aims to broaden previous research on defects by analyzing the defects that remain in the post-handover stage, which usually lasts 12 months after the handover period, and identifying the factors that influence the appearance of these defects, determining whether a significant difference exists in the quality of the two main residential building types built by developers: flats and detached houses. It also analyzes and discusses the areas and elements in which the defects were detected. The data were obtained from client complaint forms completed after the handover of 95 dwellings in Spain. The data were then statistically analyzed using a t-test analysis, a Pearson’s parametric correlation, and a chi-square test. The research reveals that clients detect more defects in flats than in detached houses. The lower quality of the materials used in flats and the tighter schedule to which flats are subject may cause these differences.

  • Resilience to increasing temperatures: residential building stock adaptation through codes and standards

     Gangolells Solanellas, Marta; Casals Casanova, Miquel
    Building research and information
    Vol. 40, num. 6, p. 645-664
    DOI: 10.1080/09613218.2012.698069
    Date of publication: 2012-11
    Journal article

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    The resilíence of the current Spanish residentia[ building stock to increased temperatures is modelled. Homogenized dai[y temperature data recorded at 50 Spanish meteorological stations for the periods 1950-1979 and 1981-2010 were used to investigate anticipated dimate warming on the Spanish residential building stock by means of the degree-day method. Impacts on residential buildings were investigated for three different future time periods (2011-2040, 2041-2070 and 2071-2100) for three representative Spanish provincial capitals. Future dimate change scenarios comprising two statistical downscaling methods, three general circulation mode[s and two carbon emission scenarios were used to project [ocal dimate. Results show that 72% of current residential building stock in Spain is thermally unprotected. In addítion, the energy demand for heating the building sector in Spain is expected to decrease by between 30% (Barcelona, B2 scenario) and 36% (Valencia, A2 scenario) by 2100, while the respective energy demand for cooling could increase by between 107% (Valencia, B2 scenario) and 296% (Madrid, A2 scenario) by 2100. To inerease resilience to higher winter and summer temperatures, strategies for modifying the built environment are needed, particu[arly for the role of building codes and standards.

  • Contributions to the measurement, monitoring and evaluation of environmental performance in construction sites

     Fuertes Casals, Alba
    Department of Construction Engineering, Universitat Politècnica de Catalunya
    Theses

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    An ontology-based approach for on-site integrated environmental and health and safety management  Open access

     Gangolells Solanellas, Marta; Casals Casanova, Miquel
    Revista de ingeniería de construcción
    Vol. 27, num. 3, p. 103-127
    Date of publication: 2012-12-01
    Journal article

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    Este artículo tiene como objetivo favorecer la implementación de sistemas integrados de gestión ambiental y de seguridad salud en empresas constructoras, centrándose en el subsistema de control de los impactos ambientales y los riesgos de seguridad y salud en obra. La gran compatibilidad que presentan los requerimientos vinculados al control operacional establecidos en la normas ISO 14001:2004 y OHSAS 18001:2007 así como las interacciones existentes entre impactos ambientales y riesgos de seguridad y salud (Gangolells et al., 2009, Gangolells et al., 2010) han motivado el desarrollo de una ontología que permite construir un modelo integrado para el control operacional en obras de construcción. La aproximación desarrollada está fuertemente influenciada por la metodología de Noy y McGuiness (2001) y modela los conceptos clave y las relaciones del dominio de forma estructurada, extensibe, flexible, reutilizable y compartible. Esta aproximación basada en ontologías ha sido implementada mediante Protégé 3.4 beta y correctamente evaluada utilizando cuestiones de competencia, verificaciones internas y entrevistas de validación con expertos. Este artículo desarrolla la primera aproximación que permite representar, compartir, reutilizar y gestionar el conocimiento relacionado con el control operacional integrado en obra de las incidencias medioambientales y de seguridad y salud y sienta las bases para poder superar la mayoría de las barreras que las empresas constructoras deben afrontar durante el proceso de implementación de un sistema de gestión integrada.

    Article publicat originalment a "Revista ingeniería de construcción", vol. 27, núm. 3, Desembre 2012, p. 103-127. ISSN 0716 - 2952. http://www.ricuc.cl/index.php/ric/article/view/417/pdf

  • Overcoming challenges for energy management in underground railway stations. The SEAM4US project

     Fuertes Casals, Alba; Casals Casanova, Miquel; Gangolells Solanellas, Marta; Puigdollers, O.
    European Conference on Product and Process Modelling
    p. 123-129
    Presentation's date: 2012
    Presentation of work at congresses

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  • Exploring the possibility of promoting energy conservation behaviors in public buildings within the ENCOURAGE project

     Gangolells Solanellas, Marta; Casals Casanova, Miquel; Fuertes Casals, Alba
    European Conference on Product and Process Modelling
    p. 171-178
    Presentation's date: 2012
    Presentation of work at congresses

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  • A computerized model for managing environmental impacts in residential construction projects

     Gangolells Solanellas, Marta; Casals Casanova, Miquel
    European Conference on Product and Process Modelling
    p. 201-209
    Presentation's date: 2012
    Presentation of work at congresses

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  • Assessing concerns of interested parties when predicting the significance of environmental impacts related to the construction process of residential buildings

     Gangolells Solanellas, Marta; Casals Casanova, Miquel; Gassó Domingo, Santiago; Forcada Matheu, Nuria; Roca Ramon, Xavier; Fuertes Casals, Alba
    Building and environment
    Vol. 46, num. 5, p. 1023-1037
    DOI: 10.1016/j.buildenv.2010.11.004
    Date of publication: 2011-05-02
    Journal article

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    The most common challenges and obstacles encountered by construction organizations during the process of implementing and using environmental management systems are related to the inherent peculiarities of the construction sector. Several studies have shown that one of the issues involving the greatest level of uncertainty is the identification and assessment of environmental impacts. In order to improve the identification of the significance of environmental impacts of construction projects and sites, which will lead to greater efficiency and robustness in environmental management systems, this paper extends the systematic approach for identifying and assessing potential adverse environmental impacts at the pre-construction stage presented in Gangolells et al. (2009) by introducing the assessment of the concerns of interested parties. By considering concerns amongst internal and external interested parties, one can assess the significance of environmental impacts taking into account not only the severity of the impacts but also local perceptions and international challenges, thereby ensuring that the determination of the impacts’ significance is appropriate to the particular socioeconomic and biophysical environments surrounding construction sites. In order to quantitatively measure concerns among internal and external interested parties for each of the 37 environmental impacts related to a construction project, we developed corresponding indicators and assessment scales with the help of a panel of experts. A series of χ2 tests conducted over 76 new-start construction projects clearly revealed that the severity of environmental impacts is not correlated with the concerns of interested parties. The development of a formal quantitative method and the subsequent definition of a threshold make it possible to obtain advance knowledge of the significance – and, therefore, the acceptability – of each potential environmental impact for a particular construction project. A total score for each construction project alternative is also obtained, so the improved methodology provides a consistent basis for comparing construction companies and construction sites. Finally, two case studies are presented in order to demonstrate the benefits of the improved methodology.

  • Improving design competences: experiences in group-based learning based on ICTs in a blended learning environment

     Forcada Matheu, Nuria; Casals Casanova, Miquel; Roca Ramon, Xavier; Gangolells Solanellas, Marta; Fuertes Casals, Alba
    International journal of engineering education
    Vol. 27, num. 2, p. 292-302
    Date of publication: 2011
    Journal article

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  • Coordinació d'assignatures per a la introducció de la competència genèrica tercera llengua als nous estudis de grau de l'escola tècnica superior d'enginyeries industrial i aeronàutica de Terrassa (ETSEIAT)

     Garcia Almiñana, Daniel; Rodríguez-Donaire, Silvia; Domenech Mas, Jose M.; Gassó Domingo, Santiago; Amante García, Beatriz; Gonçalves Ageitos, Maria; Lopez Grimau, Victor; Morera Escude, Maria Teresa; Nejjari Akhi-elarab, Fatiha; Fernández Alarcón, Vicenç; Salán Ballesteros, Mª Núria; Sureda Anfres, Miquel; Del Campo Sud, David; Del Campo Gatell, Vanessa; Forcada Matheu, Nuria; Gangolells Solanellas, Marta; Garcia Espinosa, Antonio; Arencón Osuna, David; Casals Casanova, Miquel
    Competitive project

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  • Sustainable Energy mAnageMent for Underground Stations

     Forcada Matheu, Nuria; Gangolells Solanellas, Marta; Casals Casanova, Miquel
    Competitive project

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    Guía de actividades docentes para la formación en integración e igualdad de oportunidades por razón de discapacidad en las enseñanzas técnicas: accesibilidad universal y diseño para todos  Open access

     Guasch Murillo, Daniel; Dotras Ruscalleda, Pilar; Llinares Fité, Montserrat; Aguado Roca, Maria Teresa; Bestraten Castells, Sandra Cinta; Bordas Eddy, Marta; Casals Casanova, Miquel; Catala Roig, Neus; Corbalán Fuertes, Montserrat; Esquerra Llucià, Ignasi; Ferran Gozalvez, Carlos; Gangolells Solanellas, Marta; Hormias Laperal, Emilio; Jaen Fernandez, Carlos; Lamich Arocas, Manuel; Roca Ramon, Xavier; Roman Jimenez, Jose Antonio; Ruiz Vela, Inmaculada; Salán Ballesteros, Mª Núria; Simo Mezquita, Ester; Usandizaga Calparsoro, Miguel M.
    Date of publication: 2010-11-12
    Book

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    Estudio financiado por el MEC, Programa Estudio y Análisis

  • A web-based system for sharing and disseminating research results: The underground construction case study

     Forcada Matheu, Nuria; Casals Casanova, Miquel; Fuertes Casals, Alba; Gangolells Solanellas, Marta; Roca Ramon, Xavier
    Automation in construction
    Vol. 19, num. 4, p. 458-474
    DOI: 10.1016/j.autcon.2009.12.018
    Date of publication: 2010-07
    Journal article

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    Researchers often have to go to multiple information sources in order to identify high-quality, time-critical information. Due to the dynamic and unstructured nature of research results, they are faced with such problems as distributed sources and inter-disciplinary differences in terminology that prevent them from accessing the information they need. This paper presents the System for Active Knowledge Management (SAKM), a web-based system that addresses these problems by supporting effective information search and analysis, and by enhancing communication and collaboration among researchers. The system was implemented in the underground construction field, which has experienced tremendous growth and is facing increasingly complex and challenging research issues. Preliminary testing suggested that a tool like the SAKM could improve the information transfer of research results. The validation stage confirmed that the system met the requirements of the initially defined scenarios.

  • Contributions to the implementation of integrated environmental and health and safety management systems in construction companies  Open access  awarded activity

     Gangolells Solanellas, Marta
    Department of Construction Engineering, Universitat Politècnica de Catalunya
    Theses

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    Resum de la tesi (màxim 4000 caràcters. Si se supera aquest límit, el resum es tallarà automàticament al caràcter 4000) Molts dels problemes i obstacles que més freqüentment han d’encarar les empreses constructores durant el procés d’implementació i ús de sistemes integrats de gestió mediambiental i de seguretat i salut estan relacionats amb les peculiaritats pròpies del sector de la construcció. D’acord amb investigacions prèvies realitzades per diferents autors, una de les qüestions que tradicionalment comporta un major grau d’incertesa és la integració dels instruments de planificació i control, on s’inclouen els elements per a la identificació i l’avaluació dels impactes ambientals i dels riscos de seguretat i salut i l’aplicació de les subseqüents mesures de control. Aquesta tesi doctoral contribueix a la implementació i ús de sistemes integrats de gestió mediambiental i de seguretat i salut en empreses constructores amb un enfocament orientat al procés i emprant el risc com a factor d’integració. A nivell de projecte constructiu, aquesta recerca proposa una metodologia quantitativa per tal d’identificar i avaluar aquells riscos de salut i seguretat i impactes ambientals potencialment adversos que poden originar-se en obres residencials o d’altres tipologies similars durant les etapes pre-constructives. La metodologia desenvolupada facilita als dissenyadors la consideració de forma explícita dels impactes ambientals i la seguretat dels treballadors a l’obra durant el procés de disseny d’edificis residencials. Els dissenyadors poden comparar diferents alternatives de disseny i determinar, per a cada una de les solucions, el corresponent nivell d'impacte ambiental global així com el nivell de risc de seguretat i salut global, sense limitar el seu talent creatiu. La metodologia és especialment útil per a aquells dissenyadors menys experimentats que presenten una manca d’habilitats i coneixements per al reconeixement d’aspectes mediambientals i de riscos de seguretat i salut, ajudant-los a desenvolupar dissenys més òptims des d’aquestes perspectives. La metodologia també serveix com a eina d'avaluació per a que les empreses constructores puguin mesurar el comportament mediambiental i en termes de salut i de seguretat dels projectes constructius que duran a terme i les subseqüents activitats constructives, proporcionant una base consistent per a realitzar comparacions i per a l’establiment de futures etiquetes en termes mediambientals i de seguretat i salut entre diferents projectes de construcció i empreses constructores. La metodologia proposada també permet a les empreses constructores la optimització del seu comportament a l’obra en termes mediambientals i de salut i seguretat durant les etapes de planificació i preparació. La metodologia desenvolupada no només proporciona als dissenyadors un forma d’avaluar el comportament mediambiental i en termes de seguretat i salut dels seus dissenys residencials sinó que també ajuda a les empreses constructores a millorar el seu comportament mediambiental i en termes de seguretat i salut a l’obra. Una vegada s’ha assolit el disseny final, la metodologia subratlla aquells impactes ambientals i riscos de seguretat i salut que encara són significatius. Una millor identificació d'impactes ambientals i de riscos de seguretat i salut porta indubtablement a una gestió mediambiental i de seguretat in situ més exitosa. D’aquesta manera, es poden implementar a l’obra un conjunt d’instruccions de treball orientades a eliminar o reduir fins a un nivell acceptable els impactes ambientals i els riscos de seguretat i salut restants. Per tal de promoure el control operacional integrat a l’obra dels impactes ambientals i riscos de salut i seguretat, aquesta tesi doctoral proposa una aproximació basada en les ontologies. Entendre les relacions existents entre impactes ambientals, riscos de salut i seguretat, processos constructius i instruccions de treball proporciona una aproximació integrada que pot ajudar als contractistes a gestionar i controlar els impactes ambientals i els riscos de seguretat i salut relacionats amb el procés constructiu. Amb l’objectiu d’incrementar l'ús d'aquesta recerca, la metodologia desenvolupada s'ha implementat en un sistema web de gestió del coneixement i la informació. Per una banda, aquesta aplicació permet significativament reduir el temps dedicat a l'avaluació de cada projecte de construcció. D'altra banda, la formalització i visualització de l’aproximació basada en ontologies que s’ha desenvolupat durant la tesi confereix una guia per als contractistes en la gestió de moltes de les incidències mediambientals i de seguretat i salut que poden tenir lloc a les obres de construcció. Finalment, aquesta tesi doctoral documenta la verificació i la validació de la metodologia desenvolupada i de la corresponent eina d’implementació. La tesi doctoral conclou subratllant les principals contribucions d'aquesta investigació. Aquells temes que sobrepassen l’abast d’aquesta tesi són comentats i proposats com a futurs treballs.

    Most common challenges and obstacles encountered by construction organizations during the implementation process and use of integrated environmental and health and safety management systems are related to the inherent peculiarities of the construction sector. According to several research authors, one of the issues involving a higher level of uncertainty is the integration of planning and control instruments, including elements for identifying and assessing environmental impacts and health and safety risks and implementing subsequent necessary control measures. This dissertation contributes to the implementation of environmental and health and safety management systems in construction companies by proposing a process-oriented approach and using risk as an integrating factor. At a project level, this research proposes a quantitative methodology for dealing with potential adverse environmental impacts and health and safety risks during the pre-construction stages of residential buildings and other similar typologies. The strength of this methodology lies in the fact that it helps designers to explicitly consider on-site environmental impacts and construction worker safety during the design process. Designers can compare several design alternatives during the design phase and determine corresponding overall environmental impact level and overall safety risk level of a construction project without their creative talents being restricted. The methodology is especially worthwhile for those less-experienced designers who lack the skills and knowledge required to recognize environmental aspects and safety hazards, developing optimal designs. The methodology also serves as an assessment tool for construction companies to measure the environmental and health and safety performance of construction projects and its subsequent construction activities, providing a consistent basis for comparisons, future labelling and environmental and safety benchmarking among construction projects and construction companies. The suggested methodology also allows construction companies to optimize its on-site performance in the environmental and the health and safety domains during the planning and preparation stages. The developed methodology not only provides designers with a risk-analysis-based way of evaluating the environmental and safety-related performance of their residential construction designs, but also helps construction companies improve their on-site environmental and safety performance. Once a final design is reached, the methodology highlights the significant remaining environmental impacts and health and safety risks. Improved levels of environmental impacts and safety risks identification undoubtedly lead to successful on-site environmental and safety management. A range of measures can then be implemented at the construction site to eliminate the remaining impacts and risks or reduce them to an acceptable level. In order to promote the integrated operational control of on-site environmental impacts and health and safety risks, this research proposes an ontology-based approach. Understanding relationships between environmental impacts, health and safety risks, construction processes and work instructions provides an integrated approach to help contractors managing and controlling environmental impacts and health and safety risks related to the construction process. In order to increase the usability of this research, the developed methodology has been implemented in a web-based information-and knowledge-management system. On one hand, this application allows significantly reducing the time devoted to the assessment of each construction project. On the other hand, formalizing and visualizing the developed ontology-based approach offers guidance to contractors on the integrated management of many of the environmental and health and safety incidences at the construction site. Finally, this dissertation documents the verification and validation of the developed methodology and corresponding web-based implementation tool. The dissertation concludes by outlining the main contributions of this research. Those subjects that exceed this dissertation scope are commented and proposed as future work.

  • Mitigating construction safety risks using prevention through design

     Gangolells Solanellas, Marta; Casals Casanova, Miquel; Forcada Matheu, Nuria; Roca Ramon, Xavier; Fuertes Casals, Alba
    Journal of safety research
    Vol. 41, num. 2, p. 107-122
    DOI: 10.1016/j.jsr.2009.10.007
    Date of publication: 2010-04
    Journal article

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    Introduction: Research and practice have demonstrated that decisions made prior to work at construction sites can influence construction worker safety. However, it has also been argued that most architects and design engineers possess neither the knowledge of construction safety nor the knowledge of construction processes necessary to effectively perform Construction Hazards Prevention through Design (CHPtD). Method: This paper introduces a quantitative methodology that supports designers by providing a way to evaluate the safety-related performance of residential construction designs using a risk analysis–based approach. The methodology compares the overall safety risk level of various construction designs and ranks the significance of the various safety risks of each of these designs. The methodology also compares the absolute importance of a particular safety risk in various construction designs. Results: Because the methodology identifies the relevance of each safety risk at a particular site prior to the construction stage, significant risks are highlighted in advance. Thus, a range of measures for mitigating safety risks can then be implemented during on-site construction. Impact on industry: The methodology is specially worthwhile for designers, who can compare construction techniques and systems during the design phase and determine the corresponding level of safety risk without their creative talents being restricted. By using this methodology, construction companies can improve their on-site safety performance.

  • Developing a knowledge map for underground construction research projects

     Forcada Matheu, Nuria; Fuertes Casals, Alba; Casals Casanova, Miquel; Gangolells Solanellas, Marta; Roca Ramon, Xavier
    European Conference on Product and Process Modelling
    p. 25-32
    Presentation's date: 2010
    Presentation of work at congresses

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  • Knowledge management and e-learning for underground construction projects

     Fuertes Casals, Alba; Forcada Matheu, Nuria; Casals Casanova, Miquel; Gangolells Solanellas, Marta; Roca Ramon, Xavier; Ballester, Francisco; Diego, Ruben; De la Horra, Jose Manuel
    ISPE International Conference on Concurrent Engineering
    p. 231-238
    Presentation's date: 2010-09-07
    Presentation of work at congresses

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  • Identifying potential health and safety risks at the pre-construction stage

     Gangolells Solanellas, Marta; Casals Casanova, Miquel; Forcada Matheu, Nuria; Roca Ramon, Xavier; Fuertes Casals, Alba; Macarulla Marti, Marcel; Vilella, Quirze
    CIB World Building Congress
    p. 1-15
    Presentation's date: 2010-05-10
    Presentation of work at congresses

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    Previous researches have demonstrated that decisions made during the pre-construction stage have a big influence on the construction worker safety. This paper introduces a systematic approach for dealing with health and safety risks during the pre-construction stage. The developed methodology helps designers to calculate the safety-related performance of their residential construction designs, providing a consistent basis for comparisons between them. In order to avoid a typical shortcoming in the evaluation of health and safety risks, indicators are based on quantitative data available in the project documents. Significance limits are statistically obtained with the analysis of 25 new-start construction projects

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    Estimación del consumo de energía primaria y de las emisiones de CO2 de los edificios de viviendas de una ciudad de tamaño medio  Open access

     Hernandez Sanchez, Juan Manuel; Roca Ramon, Xavier; Domenech Mas, Jose M.; Garcia Almiñana, Daniel; Casals Casanova, Miquel; Vilella, Quirze; Gangolells Solanellas, Marta; Forcada Matheu, Nuria; Fuertes Casals, Alba
    Sustainable Building Conference
    Presentation's date: 2010-04-29
    Presentation of work at congresses

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  • A methodology for predicting the severity of environmental impacts related to the construction process of residential buildings

     Gangolells Solanellas, Marta; Casals Casanova, Miquel; Gassó Domingo, Santiago; Forcada Matheu, Nuria; Roca Ramon, Xavier; Fuertes Casals, Alba
    Building and environment
    Vol. 44, num. 3, p. 558-571
    DOI: doi:10.1016/j.buildenv.2008.05.001
    Date of publication: 2009-03-01
    Journal article

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    Postprint (author’s final draft)

  • Identifying potential environmental impacts at the pre-construction stage

     Gangolells Solanellas, Marta; Casals Casanova, Miquel; Gassó Domingo, Santiago; Forcada Matheu, Nuria; Roca Ramon, Xavier; Fuertes Casals, Alba
    CIB International Conference on Smart and Sustainable Built Environments
    Presentation's date: 2009-06-16
    Presentation of work at congresses

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  • A Web-based system for quality inspection and defect management of industrial building construction

     Forcada Matheu, Nuria; Margalida, Elisabet; Fuertes Casals, Alba; Casals Casanova, Miquel; Gangolells Solanellas, Marta; Roca Ramon, Xavier; Macarulla Marti, Marcel
    International Conference on IT in Construction & International Conference on Managing Construction for Tomorrow
    p. 203-209
    Presentation's date: 2009-10-02
    Presentation of work at congresses

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  • Creating new ways of learning in architecture and building: the MACE project

     Fuertes Casals, Alba; Casals Casanova, Miquel; Forcada Matheu, Nuria; Gangolells Solanellas, Marta; Roca Ramon, Xavier
    International Conference on IT in Construction & International Conference on Managing Construction for Tomorrow
    p. 267-273
    Presentation's date: 2009-10-02
    Presentation of work at congresses

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  • Informe de opinión y test de evaluación del portal MACE y sus funcionalidades

     Gangolells Solanellas, Marta; Fuertes Casals, Alba
    Date: 2008-09
    Report

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  • Diseño de una experimentación de las funcionalidades del portal MACE.

     Gangolells Solanellas, Marta; Fuertes Casals, Alba
    Date: 2008-10
    Report

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