El hormigón es uno de los materiales más usados en la ingeniería civil. No obstante, la industria de la construcción exige el uso de materiales de más livianos y el hormigón celular es una alternativa. Este tipo de hormigón es reconocido por su baja densidad, alta trabajabilidad, baja conductividad térmica y acústica y su alta resistencia al fuego. En estado endurecido, las propiedades del hormigón tales como la densidad, resistencia a la compresión, permeabilidad, retracción y aislamiento termoacústico se encuentran íntimamente relacionadas con su porosidad y distribución del tamaño de sus poros. La diferencia en la estructura de los poros se debe principalmente al tipo de espuma, razón agua-cemento y estabilidad de la espuma. Dada la importancia de la porosidad en la evaluación del comportamiento de un hormigón celular en estado endurecido, este trabajo busca determinar las relaciones matemáticas existentes entre la porosidad, densidad y resistencia a la compresión, considerando el efecto del tipo de reactivo espumante usado y la razón agua-cemento.
{"title":"Propiedades de las pastas espumadas endurecidas con agentes espumantes alternativos en función de la porosidad","authors":"L. Chica, A. L. Alzate","doi":"10.7764/ric.00029.21","DOIUrl":"https://doi.org/10.7764/ric.00029.21","url":null,"abstract":"El hormigón es uno de los materiales más usados en la ingeniería civil. No obstante, la industria de la construcción exige el uso de materiales de más livianos y el hormigón celular es una alternativa. Este tipo de hormigón es reconocido por su baja densidad, alta trabajabilidad, baja conductividad térmica y acústica y su alta resistencia al fuego. En estado endurecido, las propiedades del hormigón tales como la densidad, resistencia a la compresión, permeabilidad, retracción y aislamiento termoacústico se encuentran íntimamente relacionadas con su porosidad y distribución del tamaño de sus poros. La diferencia en la estructura de los poros se debe principalmente al tipo de espuma, razón agua-cemento y estabilidad de la espuma. Dada la importancia de la porosidad en la evaluación del comportamiento de un hormigón celular en estado endurecido, este trabajo busca determinar las relaciones matemáticas existentes entre la porosidad, densidad y resistencia a la compresión, considerando el efecto del tipo de reactivo espumante usado y la razón agua-cemento.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125270043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Roberta Layra Faragó Jardim, Marcilio Sousa da Rocha Freitas, André Luís Riqueira Brandão
Cold-formed Steel profiles are structural profiles widely used in civil construction. They are often manufactured with perforations. The designing can be performed using the direct resistance method. Formulations were adapted by Moen and Schafer (2008) to consider the presence of perforations in these profiles. The objective of this study is to investigate the structural safety of columns with web perforations. The calculation of the resistance capacity was performed using the formulations proposed by the authors. The reliability indexes were determined using the First Order Reliability Method (FORM), First Order Second Moment (FOSM) and Monte Carlo Method (MCM), which are reliability methods for the Load and Resistance Factor Design (LRFD) and Limit States Design (LSD) philosophies. Following the same criteria performed by AISI S100, the resistance factors were obtained from the FOSM method. Based on the results, it was found that the desired security level for the LSD philosophy was not achieved. The calculated resistance factors are predominantly lower than the target. However, for the LRFD philosophy, the safety level was achieved, and the resistance factors were higher than the target.
{"title":"RESISTANCE FACTOR CALIBRATION FOR PERFORATED COLD-FORMED STEEL COMPRESSION MEMBERS","authors":"Roberta Layra Faragó Jardim, Marcilio Sousa da Rocha Freitas, André Luís Riqueira Brandão","doi":"10.7764/ric.00015.21","DOIUrl":"https://doi.org/10.7764/ric.00015.21","url":null,"abstract":"Cold-formed Steel profiles are structural profiles widely used in civil construction. They are often manufactured with perforations. The designing can be performed using the direct resistance method. Formulations were adapted by Moen and Schafer (2008) to consider the presence of perforations in these profiles. The objective of this study is to investigate the structural safety of columns with web perforations. The calculation of the resistance capacity was performed using the formulations proposed by the authors. The reliability indexes were determined using the First Order Reliability Method (FORM), First Order Second Moment (FOSM) and Monte Carlo Method (MCM), which are reliability methods for the Load and Resistance Factor Design (LRFD) and Limit States Design (LSD) philosophies. Following the same criteria performed by AISI S100, the resistance factors were obtained from the FOSM method. Based on the results, it was found that the desired security level for the LSD philosophy was not achieved. The calculated resistance factors are predominantly lower than the target. However, for the LRFD philosophy, the safety level was achieved, and the resistance factors were higher than the target.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131708814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
René Castillo, José Antonio Domíngez, L. F. Jiménez
The present research aimed to provide a broad overview regarding the management of construction materials. As a starting point, the conception of the set of actions that make up the materials management is described and its importance within the construction sector is pointed out; It also addresses the various obstacles that this sector currently faces when managing its materials, in a global scope, and which hinder the optimal development of the sector. Likewise, new management support technologies such as Radio Frequency Identification (RFID) web-based systems for materials management and data storage applications are described, offering a vision of the advantages and disadvantages involved in implementing these information technologies. In the same way, the most common support techniques for inventory control are outlined. It is concluded that the construction industry knows the concept of materials management, however, it still faces problems for the application of a correct execution of said concept; In addition, it is at an early stage in the adoption of new techniques and technologies to support the management of construction materials.
{"title":"CURRENT SITUATION OF CONSTRUCTION MATERIAL MANAGEMENT AT INTERNATIONAL LEVEL","authors":"René Castillo, José Antonio Domíngez, L. F. Jiménez","doi":"10.7764/ric.00020.21","DOIUrl":"https://doi.org/10.7764/ric.00020.21","url":null,"abstract":"The present research aimed to provide a broad overview regarding the management of construction materials. As a starting point, the conception of the set of actions that make up the materials management is described and its importance within the construction sector is pointed out; It also addresses the various obstacles that this sector currently faces when managing its materials, in a global scope, and which hinder the optimal development of the sector. Likewise, new management support technologies such as Radio Frequency Identification (RFID) web-based systems for materials management and data storage applications are described, offering a vision of the advantages and disadvantages involved in implementing these information technologies. In the same way, the most common support techniques for inventory control are outlined. It is concluded that the construction industry knows the concept of materials management, however, it still faces problems for the application of a correct execution of said concept; In addition, it is at an early stage in the adoption of new techniques and technologies to support the management of construction materials.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"53 16","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131721796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
E.A. Atália Daniel Muianga, A. Denis Granja, F. Augusto Picchi, C. Torres Formoso
Over the years, construction projects have been developed and delivered through traditional delivery methods. However, traditional delivery methods have been considered ineffective to achieve the real project goals. Integrated and collaborative models, such as Integrated Project Delivery (IPD), a delivery method based on relational contracts, has attracted growing interest in both academia and industry, but still scarce in Architecture Engineering, and Construction (AEC). Most prior research emphasized the identification of barriers and challenges to implementing IPD and few studies focused on developing strategies to overcome those constraints. A limited number of studies have addressed how to reap the benefits of IPD in AEC environments where collaboration between stakeholders is poor. This research investigates how to integrate IPD into AEC projects when collaboration is still limited. An “IPD Evolutionary Model” and guidelines for its implementation were developed for applications in such environments. Design Science Research was the research approach adopted in this study to discuss and evaluate the proposed model. The model emphasizes an evolutionary and flexible process for the IPD application in AEC projects. The model postulates the desirable and required IPD elements according to the levels of application difficulty, emphasising stakeholders' readiness for using it and the gradual introduction of IPD in such environments.
{"title":"Evolutionary model for gradual transition to Integrated Project Delivery (IPD)","authors":"E.A. Atália Daniel Muianga, A. Denis Granja, F. Augusto Picchi, C. Torres Formoso","doi":"10.7764/ric.00058.21","DOIUrl":"https://doi.org/10.7764/ric.00058.21","url":null,"abstract":"Over the years, construction projects have been developed and delivered through traditional delivery methods. However, traditional delivery methods have been considered ineffective to achieve the real project goals. Integrated and collaborative models, such as Integrated Project Delivery (IPD), a delivery method based on relational contracts, has attracted growing interest in both academia and industry, but still scarce in Architecture Engineering, and Construction (AEC). Most prior research emphasized the identification of barriers and challenges to implementing IPD and few studies focused on developing strategies to overcome those constraints. A limited number of studies have addressed how to reap the benefits of IPD in AEC environments where collaboration between stakeholders is poor. This research investigates how to integrate IPD into AEC projects when collaboration is still limited. An “IPD Evolutionary Model” and guidelines for its implementation were developed for applications in such environments. Design Science Research was the research approach adopted in this study to discuss and evaluate the proposed model. The model emphasizes an evolutionary and flexible process for the IPD application in AEC projects. The model postulates the desirable and required IPD elements according to the levels of application difficulty, emphasising stakeholders' readiness for using it and the gradual introduction of IPD in such environments.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130522148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vitória Silveira da Costa, Ronaldo Cantelmo Ibrahim Júnior, Ângela Azevedo de Azevedo, A. da Silva Torres
Historically, public buildings are not importantly addressed in Brazil, resulting in several buildings dropped to the ruins and unnecessary acquisitions of new spaces by public institutions. The present study was carried out in a building part of the extinct industrial building of the Anglo fridge in Pelotas. The main objective was to evaluate state of degradation state through non-destructive tests in a case study of a public building of Federal Education Institution. Visual analysis, damage map, measurement of nominal coverings, sclerometry tests, silver nitrate spray and phenolphthalein test were performed. The building presents worrying deterioration levels, chlorides, and carbonation presence and several stains moisture. These facts lead concrete detachment, reinforcements corrosion and losses in slabs, beams, and pillars sections.
{"title":"Diagnosis of degradation state through non-destructive tests: case study of the public building of federal education institution","authors":"Vitória Silveira da Costa, Ronaldo Cantelmo Ibrahim Júnior, Ângela Azevedo de Azevedo, A. da Silva Torres","doi":"10.7764/ric.00024.21","DOIUrl":"https://doi.org/10.7764/ric.00024.21","url":null,"abstract":"Historically, public buildings are not importantly addressed in Brazil, resulting in several buildings dropped to the ruins and unnecessary acquisitions of new spaces by public institutions. The present study was carried out in a building part of the extinct industrial building of the Anglo fridge in Pelotas. The main objective was to evaluate state of degradation state through non-destructive tests in a case study of a public building of Federal Education Institution. Visual analysis, damage map, measurement of nominal coverings, sclerometry tests, silver nitrate spray and phenolphthalein test were performed. The building presents worrying deterioration levels, chlorides, and carbonation presence and several stains moisture. These facts lead concrete detachment, reinforcements corrosion and losses in slabs, beams, and pillars sections.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131006603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
L. Pagoto, J. Akasaki, J. L. Pinheiro Melges, C. Fioriti
This paper analyzed the behavior of mixed mortars incorporated with rubber from the tire retreading process, based on partial sand substitution. The content of rubber incorporation in the mortars was 5%, 10%, 15%, and 20% by volume. The different granulometries of rubber were denominated as thick (passed through a sieve # 1.19 mm) and fine (passed through a sieve # 0.60 mm). Tests were performed to evaluate water retention, capillary absorption, drying, immersion absorption, water vapor permeability, and permeability to water under pressure. The results showed that the fine rubber was distinguished by its higher retention of water at the contents of 15% and 20%, lower absorption via both capillary and immersion, higher drying capacity, higher permeability to water vapor, and lower permeability to water under pressure.
{"title":"ANALYSIS OF WATER PERFORMANCE OF COATING MORTARS INCORPORATED WITH TIRE RUBBER","authors":"L. Pagoto, J. Akasaki, J. L. Pinheiro Melges, C. Fioriti","doi":"10.7764/ric.00018.21","DOIUrl":"https://doi.org/10.7764/ric.00018.21","url":null,"abstract":"This paper analyzed the behavior of mixed mortars incorporated with rubber from the tire retreading process, based on partial sand substitution. The content of rubber incorporation in the mortars was 5%, 10%, 15%, and 20% by volume. The different granulometries of rubber were denominated as thick (passed through a sieve # 1.19 mm) and fine (passed through a sieve # 0.60 mm). Tests were performed to evaluate water retention, capillary absorption, drying, immersion absorption, water vapor permeability, and permeability to water under pressure. The results showed that the fine rubber was distinguished by its higher retention of water at the contents of 15% and 20%, lower absorption via both capillary and immersion, higher drying capacity, higher permeability to water vapor, and lower permeability to water under pressure.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133183006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lightweight concrete has as main characteristic its low density due to the incorporation of light materials such as expanded clay, or even the incorporation of air whose function is to reduce the density, characteristic of cellular concrete. In Aracaju city, there are companies that promote tire reconditioning, generating large amounts of waste dust. The aim of this work is to study the reuse of tire rubber waste in light concrete from expanded clay. An experimental program was developed for the analysis of these concretes, varying the percentage of 1%, 2.5% and 5% of the tire rubber waste to replace the natural fine aggregate and 100% replacing the natural coarse aggregate by expanded clay (50% of expanded clay C1506 and 50% of C2215). The materials (cement, sand, expanded clays and tire rubber waste) were characterized through tests of particle size analysis and unit mass. The hardened concrete was evaluated through mechanical tests of axial compression strength, modulus of elasticity and tensile strength by diametrical compression, physical tests of water absorption and specific mass, in addition to image analysis by scanning electron microscopy. The use of expanded clay with incorporation of 1% of tire rubber waste guaranteed better results in mechanical resistance, lower water absorption and greater specific mass than the mixtures with 2.5 and 5%, reaching values close to the reference concrete. Thus, the residue can be an alternative for reuse, avoiding disposal.
{"title":"DEVELOPMENT OF LIGHTWEIGHT CONCRETE FROM EXPANDED CLAY MODIFIED WITH TIRE RUBBER WASTE","authors":"Herbet Alves Oliveira","doi":"10.7764/ric.00008.21","DOIUrl":"https://doi.org/10.7764/ric.00008.21","url":null,"abstract":"Lightweight concrete has as main characteristic its low density due to the incorporation of light materials such as expanded clay, or even the incorporation of air whose function is to reduce the density, characteristic of cellular concrete. In Aracaju city, there are companies that promote tire reconditioning, generating large amounts of waste dust. The aim of this work is to study the reuse of tire rubber waste in light concrete from expanded clay. An experimental program was developed for the analysis of these concretes, varying the percentage of 1%, 2.5% and 5% of the tire rubber waste to replace the natural fine aggregate and 100% replacing the natural coarse aggregate by expanded clay (50% of expanded clay C1506 and 50% of C2215). The materials (cement, sand, expanded clays and tire rubber waste) were characterized through tests of particle size analysis and unit mass. The hardened concrete was evaluated through mechanical tests of axial compression strength, modulus of elasticity and tensile strength by diametrical compression, physical tests of water absorption and specific mass, in addition to image analysis by scanning electron microscopy. The use of expanded clay with incorporation of 1% of tire rubber waste guaranteed better results in mechanical resistance, lower water absorption and greater specific mass than the mixtures with 2.5 and 5%, reaching values close to the reference concrete. Thus, the residue can be an alternative for reuse, avoiding disposal.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116222126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The elimination of a large quantity of waste such as plastic, bottles, tyres, etc., that are generated in large quantities and produce an environmental impact and risk in the areas where they are produced and stored. The current study aims to use recycled rubber grain (GCR), originating from discarded tyres, in the manufacture of asphalt concrete. Seven mixtures were designed using the Marshall methodology, one mixture without the addition of the rubber grain, which will be the control mixture for comparison, and six mixtures with the addition of 1% of rubber grain of varying sizes, which oscillate between that passing through a sieve of 2.36 mm (No. 8) and that retained on a sieve of 0.075 mm (No. 200). Once the respective working formulas had been determined, performance tests were carried out such as: susceptibility to humidity damage, plastic deformation resistance, resilient modulus, fatigue resistance and skid resistance or each of the mixtures. The results show that the incorporation of rubber grain in some cases produces a slight decrease in the optimum content of asphalt cement, increase in Marshall stability, an improvement in plastic deformation, an increase in resistance, a longer fatigue life in comparison with a conventional mixture. The results of the laboratory tests indicate that in using recycled rubber grain, it is possible to obtain asphalt concretes with improved required technical characteristics whilst constructing a surface which is environmentally friendly
{"title":"Effect of the grain size of recycled rubber on the behaviour of an asphalt mix","authors":"","doi":"10.7764/ric.00059.21","DOIUrl":"https://doi.org/10.7764/ric.00059.21","url":null,"abstract":"The elimination of a large quantity of waste such as plastic, bottles, tyres, etc., that are generated in large quantities and produce an environmental impact and risk in the areas where they are produced and stored. The current study aims to use recycled rubber grain (GCR), originating from discarded tyres, in the manufacture of asphalt concrete. Seven mixtures were designed using the Marshall methodology, one mixture without the addition of the rubber grain, which will be the control mixture for comparison, and six mixtures with the addition of 1% of rubber grain of varying sizes, which oscillate between that passing through a sieve of 2.36 mm (No. 8) and that retained on a sieve of 0.075 mm (No. 200). Once the respective working formulas had been determined, performance tests were carried out such as: susceptibility to humidity damage, plastic deformation resistance, resilient modulus, fatigue resistance and skid resistance or each of the mixtures. The results show that the incorporation of rubber grain in some cases produces a slight decrease in the optimum content of asphalt cement, increase in Marshall stability, an improvement in plastic deformation, an increase in resistance, a longer fatigue life in comparison with a conventional mixture. The results of the laboratory tests indicate that in using recycled rubber grain, it is possible to obtain asphalt concretes with improved required technical characteristics whilst constructing a surface which is environmentally friendly","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126031996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
W. Utama, V. Ariani, M. Rohman, Hafiz Zahoor, A. Maqsoom
Undefinable nature of overseas markets substantially impacts the enterprises’ decision to pursue projects abroad. This study aims at identifying and prioritizing the determinant factors which considerably influence the decision to go/not go for projects in overseas from the Indonesian construction enterprises’ (ICEs) perspective. A comprehensive literature review purposed to identify the determinant factors of enterprises’ decision in selecting overseas projects was undertaken at the beginning of study. Of 131 successfully identified, 31 factors were specified after a series of following screening methods. Firstly, the factors having similar meaning were incorporated into a term. A tally technique to indicate frequency of the factor appearance then was applied for which four times emergence as cut-off point. A two-round Delphi survey involving 11 industrial experts was carried out to assess the importance and frequency level of risk occurrence of the 31-factors. Significant index (SI) were calculated to prioritize these factors to which 21 items were defined as the determinant factors to go/not go for projects in overseas. The top ten ranking factors are: (1) quality and clarity of contract condition, (2) project scale/size, (3) complexity of project, (4) financial capability and support, (5) types of contract, (6) type of contract, (7) project/contract duration, (8) client’s reputation, (9) political stability, and (10) economic health and stability. Besides defining the determinant factors, the findings of this research may assist other typical contracting companies to spotlight the central features of OCM in order to manifest their global vision.
{"title":"Identification and Prioritization of The Determinant Factors for Selecting Construction Projects in Overseas: A Delphi Survey","authors":"W. Utama, V. Ariani, M. Rohman, Hafiz Zahoor, A. Maqsoom","doi":"10.7764/ric.00035.21","DOIUrl":"https://doi.org/10.7764/ric.00035.21","url":null,"abstract":"Undefinable nature of overseas markets substantially impacts the enterprises’ decision to pursue projects abroad. This study aims at identifying and prioritizing the determinant factors which considerably influence the decision to go/not go for projects in overseas from the Indonesian construction enterprises’ (ICEs) perspective. A comprehensive literature review purposed to identify the determinant factors of enterprises’ decision in selecting overseas projects was undertaken at the beginning of study. Of 131 successfully identified, 31 factors were specified after a series of following screening methods. Firstly, the factors having similar meaning were incorporated into a term. A tally technique to indicate frequency of the factor appearance then was applied for which four times emergence as cut-off point. A two-round Delphi survey involving 11 industrial experts was carried out to assess the importance and frequency level of risk occurrence of the 31-factors. Significant index (SI) were calculated to prioritize these factors to which 21 items were defined as the determinant factors to go/not go for projects in overseas. The top ten ranking factors are: (1) quality and clarity of contract condition, (2) project scale/size, (3) complexity of project, (4) financial capability and support, (5) types of contract, (6) type of contract, (7) project/contract duration, (8) client’s reputation, (9) political stability, and (10) economic health and stability. Besides defining the determinant factors, the findings of this research may assist other typical contracting companies to spotlight the central features of OCM in order to manifest their global vision.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131597532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Las edificaciones multi-residenciales en altura en madera contralaminada se perfilan como una opción sustentable y rentable con posibilidades de industrialización, que abren el camino a nuevos paradigmas en la construcción. En este nuevo modelo edificatorio, la modulación estandarizada puede ser una eficiente estrategia para integrar plataformas de diseño y manufactura. Sin embargo, la aplicación de esta estrategia requiere del estudio y desarrollo de metodologías que permitan alcanzar la flexibilidad de diseño necesaria para obtener adecuados niveles de producción y personalización. En función de esto, este trabajo analiza las condiciones de modularidad observadas en cinco edificaciones construidas entre el 2002 y el 2016, con el propósito de estudiar los criterios de estandarización implementados. Para lograrlo, se hace un análisis de la modularidad subyacente en el diseño y las condiciones de variación o repetición presentadas. En este sentido, se observó el uso de criterios de modularidad distintos entre las primeras experiencias desarrolladas y las edificaciones más recientes, dados por el avance tecnológico de los últimos años. La investigación, permite aproximarse al entendimiento de las condiciones de modularidad asociadas a estas edificaciones, como aporte al desarrollo de metodologías que optimicen el diseño para la manufactura y ensamblaje.
{"title":"Criterios de estandarización modular aplicados en edificaciones multi-residenciales de madera contralaminada (CLT)","authors":"","doi":"10.7764/ric.00061.21","DOIUrl":"https://doi.org/10.7764/ric.00061.21","url":null,"abstract":"Las edificaciones multi-residenciales en altura en madera contralaminada se perfilan como una opción sustentable y rentable con posibilidades de industrialización, que abren el camino a nuevos paradigmas en la construcción. En este nuevo modelo edificatorio, la modulación estandarizada puede ser una eficiente estrategia para integrar plataformas de diseño y manufactura. Sin embargo, la aplicación de esta estrategia requiere del estudio y desarrollo de metodologías que permitan alcanzar la flexibilidad de diseño necesaria para obtener adecuados niveles de producción y personalización. En función de esto, este trabajo analiza las condiciones de modularidad observadas en cinco edificaciones construidas entre el 2002 y el 2016, con el propósito de estudiar los criterios de estandarización implementados. Para lograrlo, se hace un análisis de la modularidad subyacente en el diseño y las condiciones de variación o repetición presentadas. En este sentido, se observó el uso de criterios de modularidad distintos entre las primeras experiencias desarrolladas y las edificaciones más recientes, dados por el avance tecnológico de los últimos años. La investigación, permite aproximarse al entendimiento de las condiciones de modularidad asociadas a estas edificaciones, como aporte al desarrollo de metodologías que optimicen el diseño para la manufactura y ensamblaje.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"132 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130846628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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