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1 to 23 of 23 results
  • 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.

    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.

  • Rework in highway projects

     Forcada Matheu, Nuria; Rusinyol Vellvehí, Gerard; Macarulla Marti, Marcel; Love, Peter E.D.
    Journal of civil engineering and management (Spausdinta)
    Vol. 20, num. 4, p. 445-465
    DOI: 10.3846/13923730.2014.893917
    Date of publication: 2014-07-04
    Journal article

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    There is limited systematic knowledge available about the dynamics of rework in highway projects, despite the fact that they frequently exceed budget and schedule by more than 10%. A case study of a Spanish highway project, which experienced a significant cost overrun as a result of rework, is examined and the causal factors that contributed to its occurrence are determined. Through observation and subsequent analysis of interviews and documentation a high degree of interdependency existed between perceived causes of rework. This resulted in the nomenclature of Project, Organization and People to be adopted and used to develop the rework generic systemic model. Scope changes, high complexity, poor skill levels and unexpected underground services were found to be the most significant causes of rework. The developed model provides managers with insights about the interdependencies and behaviour between key influencing variables in highway projects and can be used to stimulate learning and process improvements in future highway projects.

  • 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.

  • 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.

    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 residential defects at post-handover

     Forcada Matheu, Nuria; Macarulla Marti, Marcel; Love, Peter E.D.
    Journal of construction engineering and management
    Vol. 139, num. 4, p. 372-378
    DOI: 10.1061/(ASCE)CO.1943-7862.0000603
    Date of publication: 2013-04
    Journal article

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    In Spain, the Ley de Ordenación de la Edificación (Building Regulation Act) has established compulsory warranties to ensure that buildings meet basic requirements with regard to functionality, general safety and structure, fireproofing, and use and habitability. Despite the requirements of this regulatory body, defects in newly built dwellings remain a pervasive problem, which has resulted in a plethora of complaints to the Instituto Nacional del Consumo (National Institute for Consumers¿ Protection), which deals with consumer protection in Spain. In this paper, a total of 2,351 post-handover defects derived from four Spanish builders and seven residential developments are classified according to their location, subcontract, and element. The research reveals that the most common defects identified by customers at handover were incomplete tile grouting and incorrect fixtures and fittings in toilets. In addition, failure to apply second coats of paint to walls was deemed a problematic issue. Typical surface/appearance defects were found to include floor or wall unevenness, stains, mess, and small cracks and marks, primarily caused by lack of protection. In areas where fixtures, fittings, and finishes were of a similar nature, such as the kitchen and bathroom, defect types also arose. Determining the location, subcontract, and element where defects occur in residential buildings can provide invaluable knowledge about areas where builders are likely to make errors or mistakes or take deliberate shortcuts during construction. Thus, emphasis on quality control and supervision of subcontract trades, especially in the identified areas, and during the final stages of residential construction, are critical to ensure that defects are reduced.

    In Spain, the Ley de Ordenación de la Edificación (Building Regulation Act) has established compulsory warranties to ensure that buildings meet basic requirements with regard to functionality, general safety and structure, fireproofing, and use and habitability. Despite the requirements of this regulatory body, defects in newly built dwellings remain a pervasive problem, which has resulted in a plethora of complaints to the Instituto Nacional del Consumo (National Institute for Consumers ’ Protection), which deals with consumer protection in Spain. In this paper, a total of 2,351 post-handover defects derived from four Spanish builders and seven residential developments are classified according to their location, subcontract, and element. The research reveals that the most common defects identified by customers at handover were incomplete tile grouting and incorrect fixtures and fittings in toilets. In addition, failure to apply second coats of paint to walls was deemed a problematic issue. Typical surface/appearance defects were found to include floor or wall unevenness, stains, mess, and small cracks and marks, primarily caused by lack of protection. In areas where fixtures, fittings, and finishes were of a similar nature, such as the kitchen and bathroom, defect types also arose. Determining the location, subcontract, and element where defects occur in residential buildings can provide invaluable knowledge about areas where builders are likely to make errors or mistakes or take deliberate shortcuts during construction. Thus, emphasis on quality control and supervision of subcontract trades, especially in the identified areas, and during the final stages of residential construction, are critical to ensure that defects are reduced.

  • 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.

  • 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.

  • 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.

    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.

  • Qüestionari de satisfacció MoBuild

     Forcada Matheu, Nuria; Macarulla Marti, Marcel; Casals Casanova, Miquel; Gangolells Solanellas, Marta
    Date: 2013-10
    Report

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  • Contributions to rework prevention in construction projects.  Open access

     Macarulla Marti, Marcel
    Universitat Politècnica de Catalunya
    Theses

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    La literatura sosté que les empreses del sector de la construcció poden reduir els costos derivats dels ¿rework¿ implementant sistemes de gestió de qualitat. Els reptes i obstacles més comuns als que s¿enfronten les empreses del sector de la construcció durant la implementació i operació dels sistemes de gestió de la qualitat estan relacionats amb ¿com¿ la informació pot ser enregistrada d¿una manera eficaç, i ¿què¿ es pot fer amb aquesta informació enregistrada. La tesi té com a objectiu millorar el procés d¿enregistrament de defectes en les empreses del sector de la construcció, i proposar mètodes i eines per utilitzar els defectes enregistrats en obra per tal de prevenir i reduir els ¿rework¿ en les empreses del sector de la construcció. La tesi s¿inicia amb el desenvolupament d¿un mètode conceptual per caracteritzar defectes. El model proposat està basat en models preexistents, però tenint en compte el context del sector residencial espanyol. El model es basa en l¿enumeració d¿una sèrie de paràmetres que permeten caracteritzar els defectes. El model final inclou 6 paràmetres, cada un d¿ells inclou un llistat de paraules estandarditzades amb les corresponents definicions.Els llistat de paraules estandarditzades estan basats en estudis previs, però adaptant-los al context espanyol. Cal destacar però que en termes de defectes, no existeixen llistes estandarditzades. Per aquesta raó, aquesta tesi inclou el desenvolupament d¿una taxonomia de defectes pel sector de la construcció espanyol. Aquesta taxonomia consta de 15 categories principals i 19 subcategories. La tesi continua amb el desenvolupament d¿una metodologia per capturar defectes en el sector de la construcció. La metodologia es implementada en una eina informàtica, anomenada MoBuild. El sistema es basa en la captura d¿imatges i en l¿etiquetatge d¿aquestes. D¿aquesta manera la informació es captura de manera estructurada, fet que possibilita el posterior anàlisi estadístic de la informació capturada. La nova estratègia implementada en l¿aplicació MoBuild permet als professionals reduir el temps del procés d¿enregistrament, facilitant la implementació de sistemes de gestió de la qualitat, tals com la ISO 9000 en empreses del sector industrial. La recerca proposa també una metodologia quantitativa per identificar els riscos de qualitat derivats de la construcció d¿edificis residencials durant les etapes de pre-construcció. El punt fort d¿aquesta metodologia rau en el fet que ajuda als dissenyadors a considerar explícitament la qualitat del projecte constructiu durant el procés de disseny. Els dissenyadors poden comparar diferents alternatives de disseny, i quantificar els riscos de qualitat d¿un projecte de construcció sense que les seves aptituds creatives es vegin restringides. La metodologia és especialment valuosa per als dissenyadors amb menys experiència, als quals els hi manquen les habilitats requerides i el coneixement per a reconèixer els riscos de qualitat derivats de la construcció dels seus dissenys. La metodologia també serveix com a eina d¿assessorament per a empreses constructores. Aquestes poden utilitzar la metodologia per a determinar i quantificar els riscos de qualitat derivats dels projectes constructius que aquests duguin a terme. D¿aquestes manera les empreses constructores poden preparar i planificar els seus projectes constructius i optimitzar els seus recursos i activitats.Finalment, aquesta tesi analitza la qualitat percebuda pels usuaris finals dels edificis residencials un cop aquests en comencen a fer ús. La tesi utilitza diferents mètodes estadístics per mostrar la utilitat de les dades de qualitat enregistrades per les empreses del sector de la construcció. L¿objectiu és ressaltar el rol essencial que tenen les dades enregistrades en les activitats d¿una empresa, en particular donant evidències de quins beneficis poden aportar els sistemes de la gestió de la qualitat.

    Literature usually suggests that construction organization can reduce the costs derived from rework implementing quality management systems. Most common challenges and obstacles that construction organizations face during the implementation process and use of quality management systems are related to "how" the information can be recorded in an effective way, and "what" can be done with the recorded information. The aim of this dissertation is to focus on improving the defects recording process in the construction industry, and to propose methods and tools to use defects recorded on-site to prevent and reduce rework in the construction industry. The dissertation starts with the development of a conceptual model used to characterize defects. The current model is based on previously existing models and their adaptation to the context of the Spanish residential building sector. The model is based on the enumeration of the parameters that allow characterizing defects. The final model includes 6 parameters, with a list of standardized words and their definitions. The pre-established vocabulary lists are based on existing classification systems proposed by recognised organisations, authors and research reports, but then adapted to the Spanish context. However, in terms of defects, no standardised list exists. For this reason a taxonomy of defects is further developed for the Spanish construction sector. The aforementioned taxonomy consists of 15 main categories and 19 subcategories. The dissertation continues with the development of a methodology to track defects in the construction industry and its implementation in an IT tool called MoBuild. The obtained tracking system is based on images and tags. The strengths the abovementioned tracking system is to record information in a structured way and enable further statistical analysis of the recorded information. The new approach implemented in the MoBuild application allows practitioners to reduce the time of the recording process, facilitating the implementation of quality management systems, such as ISO 9000 in construction organizations. Furthermore, research proposes a quantitative methodology for dealing with potential adverse quality risks during the pre-construction stages of residential buildings and other similar types of constructions. The strength of this methodology lies in the fact that it helps designers to explicitly consider on-site quality during the design process. Designers can compare several design alternatives during the design phase, and determine the corresponding overall quality risk levels of a construction project without their creative talents being restricted. The methodology is especially worthwhile for those less-experienced designers who lack the required skills and knowledge to recognize quality risks in developing optimal designs. The methodology also serves as an assessment tool for construction companies. It can be used to measure the potential quality risks of construction projects and its subsequent construction activities. The suggested methodology also allows construction companies to optimize their on-site performance in the quality domain during the planning and preparation stages. Finally, this dissertation analyses the quality perceived by the end users during the post-handover stage. Different statistical methods are used to demonstrate the usefulness of the recorded data for the construction organizations. The aim is to highlight the essential role that records play in the operation of a quality company, in particular by providing essential evidence of the operation of quality systems. The aforementioned statistical analysis determines the type of defects detected; the elements affected by defects; the areas where defects are detected; which subcontractors produce defects; the source of the detected defects; the origin of the detected defects and; the influence of the building type and its characteristics in the number of defects detected.

  • Sistemas inteligentes de gestión energética de edificios: el proyecto ENCOURAGE

     Macarulla Marti, Marcel; Pérez Dueñas, Lara
    Congreso Edificios Inteligentes
    p. 283-291
    Presentation's date: 2013-10
    Presentation of work at congresses

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    La mejora de la eficiencia energética en el sector de la construcción es un reto. La gestión de edificios permite la implementación de distintas estrategias para mejorar su eficiencia energética. En este contexto, el proyecto europeo ENCOURAGE tiene como objetivo el desarrollo de un sistema inteligente de tecnologías integradas que permita la optimización directa de la energía utilizada y producida en los edificios, constituidos como microrredes, además de una participación activa en las futuras Smart-Grids. La mejora de la eficiencia energética en este proyecto se pretende conseguir mediante tres estrategias complementarias: mediante sistemas de monitorización en tiempo real, desarrollando un sistema de supervisión y control, y mediante un sistema de negociación energética. La presente comunicación se centra en el módulo de inteligencia de negocios que permite analizar fácilmente la gran cantidad de datos capturados por el sistema ENCOURAGE transformando una serie de de datos brutos inexplotables en conocimiento entendible de un solo vistazo. Como consequencia de esta transformación y análisis inteligentes, se obtienen indicadores clave de desempeño (KPIs) y métricas mediante cuadros de mando dinámicos e informes que puede utilizar fácilmente el gestor para tormar decisiones de alto nivel. De esta manera, el gestor energético del edificio puede detectar qué zonas del edificio son susceptibles de ser mejoradas energéticamente o detectar en qué zonas se pueden aplicar algoritmos de control. También se describen estos algoritmos que se implementarán en la plataforma y que deben permitir conseguir reducir el consumo energético del edificio. Se mostará el caso práctico en un demostrador concreto: el edificio TR5 del Campus de Terrassa de la Universidad Politécnica de Catalunya. Para dicho demostrador se presentan los sistemas de control instalados, los algoritmos de control qe pueden ser implementado, los potenciales ahorros de la implementación de cada algoritmo y los ahorros comprobados mediante la prueba piloto de los algoritmos que han podido ser testados hasta el momento.

    La mejora de la eficiencia energética en el sector de la construcción es un reto. La gestión de edificios permite la implementación de distintas estrategias para mejorar su eficiencia energética. En este contexto, el proyecto europeo ENCOURAGE tiene como objetivo el desarrollo de un sistema inteligente de tecnologías integradas que permita la optimización directa de la energía utilizada y producida en los edificios, constituidos como microrredes, además de una participación activa en las futuras Smart-Grids. La mejora de la eficiencia energética en este proyecto se pretende conseguir mediante tres estrategias complementarias: mediante sistemas de monitorización en tiempo real, desarrollando un sistema de supervisión y control, y mediante un sistema de negociación energética. La presente comunicación se centra en el módulo de inteligencia de negocios que permite analizar fácilmente la gran cantidad de datos capturados por el sistema ENCOURAGE transformando una serie de de datos brutos inexplotables en conocimiento entendible de un solo vistazo. Como consequencia de esta transformación y análisis inteligentes, se obtienen indicadores clave de desempeño (KPIs) y métricas mediante cuadros de mando dinámicos e informes que puede utilizar fácilmente el gestor para tormar decisiones de alto nivel. De esta manera, el gestor energético del edificio puede detectar qué zonas del edificio son susceptibles de ser mejoradas energéticamente o detectar en qué zonas se pueden aplicar algoritmos de control. También se describen estos algoritmos que se implementarán en la plataforma y que deben permitir conseguir reducir el consumo energético del edificio. Se mostará el caso práctico en un demostrador concreto: el edificio TR5 del Campus de Terrassa de la Universidad Politécnica de Catalunya. Para dicho demostrador se presentan los sistemas de control instalados, los algoritmos de control qe pueden ser implementado, los potenciales ahorros de la implementación de cada algoritmo y los ahorros comprobados mediante la prueba piloto de los algoritmos que han podido ser testados hasta el momento.

  • 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.

  • Non-conformities management survey for construction companies

     Forcada Matheu, Nuria; Macarulla Marti, Marcel; Casals Casanova, Miquel; Gangolells Solanellas, Marta
    Date: 2012-06
    Report

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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
    Report

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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
    Report

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  • Defects¿ taxonomy for Mobuild

     Forcada Matheu, Nuria; Macarulla Marti, Marcel; Gangolells Solanellas, Marta; Casals Casanova, Miquel
    Date: 2012-03
    Report

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  • Parameters of ¿cooperative processes¿ defects¿ for Mobuild

     Forcada Matheu, Nuria; Macarulla Marti, Marcel
    Date: 2012-04
    Report

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  • Mapping construction defects for Mobuild

     Forcada Matheu, Nuria; Macarulla Marti, Marcel
    Date: 2012-02
    Report

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  • XXVIII CONVOCATÒRIA DE BEQUES PER TESIS DOCTORALS

     Macarulla Marti, Marcel
    Award or recognition

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  • Tracking construction defects based on images

     Macarulla Marti, Marcel; Forcada Matheu, Nuria; Casals Casanova, Miquel; Kubicki, Sylvain
    European Conference on Product and Process Modelling
    p. 723-729
    Presentation's date: 2012-07-25
    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

  • 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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