Optimization of Reinforced Concrete Beams and Steel Beams: A Comparative Study

Ozimboski, Joel M.; Pravia, Zacarias Martin Chamberlain; Kripka, Moacir

doi:10.3844/sgamrsp.2020.160.167

Cited by 6 publications

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“…It was observed that the materials used in Project 3 were more favorable compared with those in the other projects. Regarding the schedule, the average construction time was obtained from the existing literature [42], considering the time for the construction of a single residence and 100 residences simultaneously. These results are listed in Table 4.…”

Section: Resultsmentioning

confidence: 99%

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Study of Alternatives for the Design of Sustainable Low-Income Housing in Brazil

et al. 2021

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Despite insufficient housing facilities, particularly in developing countries, construction systems are generally selected intuitively or based on conventional solutions sanctioned by practice. The present study aims to evaluate different options for the design of low-income housing in Brazil by integrating the life cycle assessment (LCA) into the decision-making process. To achieve this objective, three single-family projects with different construction systems were selected and analyzed. The most sustainable design was selected through the analytic hierarchy process (AHP). The considered parameters, which were obtained through a survey with professionals and customers, included cost, environmental impact, thermal comfort, construction time, and cultural acceptance. LCA and life cycle cost assessment (LCCA) were performed with the frontier’s system considering the cradle-to-gate cycle, which included the extraction of raw materials, manufacture of building materials, and housing construction. The projects were modelled using Autodesk Revit software with the Tally application for LCA evaluation. The results indicated that light steel frame houses present a better behavior than other conventional alternatives, and the integration of building information modelling with LCA and LCCA in the design phase can lead to the development of more sustainable houses.

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Section: Resultsmentioning

confidence: 99%

“…It is understood that the structural materials should be selected based on tangible criteria, considering factors such as cost, availability of materials in the region, etc. [42]. However, the cultural issue is often a determining factor in this selection.…”

Section: Additional Criteriamentioning

confidence: 99%

Study of Alternatives for the Design of Sustainable Low-Income Housing in Brazil

et al. 2021

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“…For the formulations of reinforced concrete, steel, and wood, beams, the objective was to minimize the total cost of materials and labor, taking into account the constraints and limits imposed by the corresponding standards. The adopted formulations were developed by the authors or under their guidance (Medeiros & Kripka, 2013;Magnan, 2019;Ozimboski et al, 2020). These formulations were implemented in the Excel Solver, using the generalized reduced gradient (GRG) method, and considering the variables as continuous.…”

Section: Optimization Of Reinforced Concrete Steel and Wood Beamsmentioning

confidence: 99%

“…A double symmetry welded I-profile cross-section was considered (steel ASTM A36). The variables of the cost minimization problem (equivalent to weight minimization) were profile height, flange width, and web and flange thicknesses (Ozimboski et al, 2020). The unit cost considered was 7.72 R$/Kg.…”

Section: Optimization Of Reinforced Concrete Steel and Wood Beamsmentioning

confidence: 99%

“…Merta et al (2008), compared reinforced concrete and steel beams, considering their self-weight, height, and cost. Ozimboski et al (2020) developed a similar study, considering more than one characteristic strength of concrete. Zula and Kravanja (2018) compared a beam optimized for concrete, steel, and wood, aiming to minimize the cost and environmental impact, in isolation.…”

Section: Introductionmentioning

confidence: 99%

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Multicriteria decision-making method applied to optimized reinforced concrete, steel and wood beams

Kripka

Mezzomo

Pravia

2022

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Simply supported built-up I-beam optimization comparison

Vu,

Chu

2024

E3S Web Conf.

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The simply supported beams are commonly used in practice. They present many advantages in design as well as in fabrication and erection. Because the moment of the beam is not constant along its length, the section needs to vary to use the least amount of raw material. Various optimization methods have been proposed, including web trimming, reducing the width of flanges, or changing the flange thickness. In terms of fabrication and installation, it is preferable to keep the beam height and the flange thickness unchanged, making the second solution the most popular. Previous studies have only discussed the flange-stepped solution. Thus, this article will focus on tapering the beam flange by investigating the optimal parameters in terms of the beam weight. The new formulas to determine these optimal parameters will be proposed. The formulas are then used to calculate the material saved by the method. The outcomes are next compared to those of other optimization methods. The result shows that flange-tapered is the most efficient solution.

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Optimization of Reinforced Concrete Beams and Steel Beams: A Comparative Study

Cited by 6 publications

References 0 publications

Study of Alternatives for the Design of Sustainable Low-Income Housing in Brazil

Study of Alternatives for the Design of Sustainable Low-Income Housing in Brazil

Multicriteria decision-making method applied to optimized reinforced concrete, steel and wood beams

Simply supported built-up I-beam optimization comparison

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