Documents published in Scipedia

• Lessons learned associated with constructability application in a massive housing project

  Z. Giménez, M. Briceño

  Gaceta Técnica (2020). Vol. 20 (1), 8

  
  

  Abstract

  The architecture, engineering and construction industry has great activity and importance, it moves other areas to satisfy the infrastructure needs of most economic and social activities, such as housing, roads, education, industry and health, among others However, it is one of the industries with the lowest productivity and which seems not to have taken advantage, as do other production sectors in general, of the opportunities offered by some management philosophies to solve complications and difficulties. This article analyzes the most relevant lessons learned from the implementation, both in the previous phases and in the link or relations between them, and in the corporate area of the company, when applying the constructablity in the planning stages, design and acquisitions, guiding the objectives of multidisciplinary teams towards the integration of a housing project built in Barquisimeto, Venezuela. The methodology was used in the integral process of the project, prior to the preliminary project, which led to the continuation of benefits in costs, times and quality of the final product in a pilot project.

  Abstract
  The architecture, engineering and construction industry has great activity and importance, it moves other areas to satisfy the infrastructure needs of most economic and social [...]

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• Review: Course in structural engineering. Regional center for technological developments for construction, seismology and seismic engineering CeDeReTec

  J. Vielma-Perez

  Gaceta Técnica (2020). Vol. 21(1), 2

  
  

  Abstract

  This is the review of the Structural Engineering Update course carried out at the Regional Center for Technological Developments for Seismology and Seismic Engineering Construction (CeDeReTec, Mendoza, Argentina) at the end of the year 2019. The presentations are shown and also reports on the activities carried out within the framework of the Project “Destructive Potential Generated by the Earthquake of Ecuador of April 16, 2016” are reported.

  Abstract
  This is the review of the Structural Engineering Update course carried out at the Regional Center for Technological Developments for Seismology and Seismic Engineering Construction [...]

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• Sensitivity analysis of the hydrological and hydraulic parameters of the SWMM model and its application in urban drainage systems

  K. Rivero, A. Aguilar, J. Ortiz

  Gaceta Técnica (2020). Vol. 21(1), 1

  
  

  Abstract

  Simulation models are widely used for the design and management of urban drainage systems, such as the SWMM Stormwater Management Model. However, the quality of its results is directly related to the quality of the data provided, since an incorrect estimate of these may lead to a different behavior than expected in the real case. There is uncertainty in many hydrological and hydraulic input parameters of the model, since most of them are estimated and there are no measured data to calibrate it. In this work a sensitivity analysis is carried out to various parameters to detect the most influential in the simulation of urban drainage systems. It consisted of locally varying each of the parameters and assessing their influence on the variation of the flows and maximum levels at a point in the Copacoa Urbanization, Palavecino municipality of the Lara State, Venezuela. From the results obtained, it is concluded that for simulations of urban watersheds where impervious areas predominate, the least sensitive method for the generation of the rain hietrogram is that of alternate blocks, while the one with the greatest variability is the triangular hietrogram. Regarding the basin component, the most sensitive parameters are the percentage of impermeable area, the slope of the basin and the Manning coefficient assigned to the impermeable area. In relation to the duct, the Manning coefficient parameter also presented an appreciable sensitivity, but of a lesser magnitude compared to those obtained for the basin component.

  Abstract
  Simulation models are widely used for the design and management of urban drainage systems, such as the SWMM Stormwater Management Model. However, the quality of its results [...]

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• Correlation between the dynamic cone penetrometer and the California support relationship in the field for the sub-rasant floor of the Portoviejo-Manta road

  H. Merino, J. Morejón, L. Garzón, D. Cuasapaz

  Gaceta Técnica (2020). Vol. 21(1), 7

  
  

  Abstract

  The Portoviejo – Manta road is a main land communication artery in the province of Manabí in Ecuador, a fundamental axis in the country's economic, social and tourism development. The decentralized autonomous government of the province of Manabí based on studies proposes an extension of the four existing lanes to six; for this, a comprehensive analysis involving a traffic, geological and geotechnical study is important. Given that this province at superficial levels presents a uniform clay formation, the present investigation evaluates the conditions of the track support terrain, proposing two dynamic cone penetrometer methods and the California support ratio, examining at the same time if the correlation between them exists. Standardized field and laboratory work was carried out over a length of 35 kilometers with paired tests every 500,00 m. The data obtained from the field and laboratory were processed and analyzed using statistical linear regression methods, validated through hypothesis testing and significance of the p-value. At first, a direct correlation was obtained between both methods and an equation with a correlation value of 0,80, with a significance of 7,246x10-5. A second multiple regression equation was carried out in which correlation values were obtained between the methods, plus the physical parameters of the soil of 0,82 and its corresponding p-value of 0,0091, thus validating the reliability of the results.

  Abstract
  The Portoviejo – Manta road is a main land communication artery in the province of Manabí in Ecuador, a fundamental axis in the country's economic, social [...]

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• Editorial: Greater visibility of Gaceta Técnica journal

  L. Casadei

  Gaceta Técnica (2020). Vol. 21(1), 3

  
  

  Abstract
  Editorial: Greater visibility of Gaceta Técnica journal

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• Calculation and design of a railway bridge section of metallic structure in El Vigía, Mérida state

  G. Josue, C. Valero, F. Jesús, S. Carrasquero

  Gaceta Técnica (2020). Vol. 21(1), 6

  
  

  Abstract

  This paper refers to the design and calculation of a 30,00 m section of metal beam, for a proposed railway bridge in the city of El Vigía, capital of the Alberto Adriani Municipality of Mérida State, Venezuela. The location of the bridge corresponds approximately to a route proposed by the State Railway Institute, Maracaibo Lake Route, in the National Railway Plan. The calculation hypothesis was made using simply supported beams, however the CSI Bridge 2017 calculation tool was used. The design of the beam section was carried out using the AASHTO LRFD 2014 standard, the analysis considerations loads and combinations were based on AREMA 2004. The freight train was the AREMA COOPER E-80, which is the most common idealized locomotive in the analysis. Other designed elements were the concrete slab, elastomeric supports, diaphragms or separators and stiffeners. The design of a 30,00 m section of metal beam of section I of 1.70 m high was obtained with sheets of 5.00 cm thick at the core and 10,00 cm for each wing, with a width 80,00 cm, all in A36 steel. The slab placed was 30,00 cm thick and 250 kg/cm2 concrete.

  Abstract
  This paper refers to the design and calculation of a 30,00 m section of metal beam, for a proposed railway bridge in the city of El Vigía, capital of the Alberto Adriani [...]

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• Study of qualitative seismic vulnerability in armed concrete educational institutions in the Falcón State

  A. Giménez, M. Olavarrieta, A. Acero, J. Chong, K. Ramones, L. Reinoza

  Gaceta Técnica (2020). Vol. 21(1), 4

  
  

  Abstract

  The methodology for calculating the Prioritization Index for the Management of Seismic Risk in existing Buildings, came out as a result of the poor performance of structures that during the Cariaco 1997 earthquake, and the 1967 Caracas earthquake where the buildings collapsed, despite their apparent good state of conservation. In the case of four structures analyzed in this research, the Agustín Ocando Prosper School, the Agua Salobre Basic Bolivarian School, the Agustín Ocando Prosperous High School, and the Las Delicias Initial Education Center, these reinforced concrete buildings are located in the coastal zone of the Falcón State, in Venezuela, under the influence of the aggressive marine environment, and in the presence of the San Sebastian tectonic fault. The evaluation was carried out by applying the qualitative method of the Priority Index for Seismic Risk Management, verifying that the structures of the Agustín Ocando Prosperous School have a medium to high average vulnerability, however it is recommended to conduct detailed studies in modules 1 and 2 that have a very high frequency rating. For the Agua Salobre Bolivarian Basic School, the vulnerability index, corresponding to module 1, is medium high and the other group its classification is medium low; in Liceo Próspero Agustín Ocando modules 1 and 3 have a medium-high risk index and modules 1 and 3 are high. The Center of Initial Education Las Delicias, has the average risk index medium to low.

  Abstract
  The methodology for calculating the Prioritization Index for the Management of Seismic Risk in existing Buildings, came out as a result of the poor performance of structures [...]

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• Review: The construction camera introduce BIM in barquisimeto

  R. Arias

  Gaceta Técnica (2020). Vol. 21(1), 5

  
  

  Abstract

  In November 2019, the Lara State Construction Camera promoted two activities related to the introduction of Building Information Modeling BIM methodology. The first one, the workshop “BIM Three letters that will transform the construction industry”. The second one with the conference "BIM the methodology that changes the professional DNA of engineers, architects and builders" with very good acceptance by professionals related to the construction area of the State. These activities aim to sow interest in the academia, engineers, architects, urban planners and builders, in adapting to the advances that are being presented in the sector, in the search to be much more competitive and to be on par with the professionals of others countries.

  Abstract
  In November 2019, the Lara State Construction Camera promoted two activities related to the introduction of Building Information Modeling BIM methodology. The first one, the [...]

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• Editorial: The practice of engineering in BIM times

  J. Pérez

  Gaceta Técnica (2019). Vol. 20 (2), 9

  
  

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• Book review: Structural dynamics applied to seismic design. Luis Enrique García Reyes

  N. López

  Gaceta Técnica (2019). Vol. 20 (2), 14

  
  

  Abstract

  This paper shows a revision of the text Structural Dynamics Applied to the Seismic Design of Professor Luis Enrique García Reyes, from the Universidad de los Andes, Bogotá, Colombia, in which the most relevant appraisals of its content are collected. Although it has been published in 1998, the subject matter is still valid, and due to the form and sequence in which the contents are presented, it is easy for an undergraduate student in engineering to understand in most of its chapters, being used as text book in the subject Dynamics of Structures of the Universidad Politécnica Salesiana del Ecuador.

  Abstract
  This paper shows a revision of the text Structural Dynamics Applied to the Seismic Design of Professor Luis Enrique García Reyes, from the Universidad de los Andes, [...]

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