scholarly journals Comparative Analysis of 3D Steel and Glulam Trusses Using ABAQUS

2021 ◽  
Vol 1197 (1) ◽  
pp. 012006
Author(s):  
Arunachalam Parthasarathy ◽  
Smriti Mahalingam ◽  
Subhiksha Sridharan ◽  
Sai Pavan Kalyan Chethala ◽  
R Vidjeapriya
Keyword(s):  
Comparative Analysis ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Archaeological Sites ◽  
Light Weight ◽  
Large Deflections ◽  
Benefit Analysis ◽  
Joint System ◽  
Steel Truss ◽  
Economic Standpoint

Abstract This study aims at developing an innovative and sustainable 3D truss system that can be applied in a variety of scenarios where intermediary propping is a hindrance. One prominent and pertinent application of such a system is in archaeological sites where long spans and no intermediary propping are desired. Previous research and studies have developed an innovative 3D steel truss for the same application. This study aims to further the innovation by providing a more sustainable alternative through Glulam and Glulam-Bamboo hybrid variations which are able to withstand similar loads as that of the steel truss but offering more sustainability and less impact on the environment as well as a light weight alternative. The results of such an alternative truss system are discussed here. One obvious problem faced with the alternative wood system was the large deflections observed and also certain regions with impermissible stresses. In addition, the proposed joint in the Glulam truss has been modelled and analyzed. It was found that the Glulam truss with lateral restraints at every quarter length of the span showed the best results in terms of deflection and stress developed. Also, the Glulam-Bamboo hybrid truss without any lateral restraints proved to be an equally effective alternative from a structural standpoint. The proposed joint system for the glulam truss also proved to be effective. The study concludes with a cost benefit analysis (CBA) between the steel, glulam and Glulam-Bamboo hybrid systems, which compares the viability of the proposed designs from an economic standpoint. The CBA shows that about 46% and 48% of costs are minimized on employing Glulam, Glulam- Bamboo respectively, instead of using Steel for the truss.

Optimal strengthening by steel truss arches in prestressed girder bridges

2022 ◽  
pp. 1-51
Author(s):  
R. Cucuzza ◽  
C. Costi ◽  
M.M. Rosso ◽  
M. Domaneschi ◽  
G.C. Marano ◽  
...  
Keyword(s):  
Cross Sections ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Benefit Analysis ◽  
Girder Bridges ◽  
External Prestressing ◽  
Steel Truss ◽  
Steel Consumption ◽  
Steel Trusses

This work focuses on the proposal and the evaluation of a new consolidation system for prestressed reinforced concrete (PRC) beams of girder bridges. The system consists of two arch-shaped steel trusses placed alongside the lateral faces of the beam to beconsolidated. The arches develop longitudinally along the entire span of the beam and in elevation using the available height of the PRC cross section. The consolidation system is characterized by its own external constraints, independent from those serving the pre-existing element. The efficiency of the system with respect to parameters variability is described also focusing on the ratio between the load discharged by the consolidation system and the total applied load. Referring to a case study, the consolidation of a PRC beam is presented adopting the proposed system with respect to the usually adopted external prestressing technique. The cross sections properties of the steel arch shaped trusses are defined by means of a structural optimization process using a genetic algorithm, identifying the minimum steel consumption. Finally, a preliminary cost-benefit analysis is performed for the proposed solution for a comparison with other commonly adopted techniques.

scholarly journals Crowdsourced Software Testing: A Timely Opportunity

2020 ◽  
Vol 8 (1) ◽  
pp. 25-30 ◽  
Author(s):  
Praveen Kumar Donepudi
Keyword(s):  
Comparative Analysis ◽  
Cost Effectiveness ◽  
Literature Review ◽  
Software Testing ◽  
Value Creation ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
High Impact ◽  
Benefit Analysis ◽  
Varied Range

The concept of crowdsourcing has gained a lot of attention lately. Many companies are making use of this concept for value creation, as well as the performance of varied tasks. Despite its wide application, little is known about crowdsourcing, especially when it comes to crowdsourced software testing. This paper explores the crowdsourced software testing concept from a wider perspective ranging from a cost-benefit analysis, crowdsourcing intermediaries, and the level of expertise in the crowd. Drawing from a varied range of sources, a systematic literature review is done, where the research narrows down to ten most relevant peer-reviewed sources of high impact rating. In a comparative analysis between crowdsourced software testing and in-house testing, it is found that crowd testing has numerous advantages when it comes to efficiency, user heterogeneity, and cost-effectiveness.  The study indicates that intermediaries play a key role in managing the connection between the crowd and crowdsourcing companies despite various challenges. A comparison between novice testers and expert testers reveals that both the two have their unique capabilities in their respective domains.  

scholarly journals Strategic cost-benefit analysis of energy policies: comparative analysis

1979 ◽  
Author(s):  
H. Davitian ◽  
P.J. Groncki ◽  
P. Kleeman ◽  
J. Lukachinski ◽  
R.J. IV Goettle ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Benefit Analysis ◽  
Energy Policies

ANALYSIS AND ECONOMIC EVALUATION OF DEPOSIT REFUND SYSTEM

2019 ◽  
Vol 6 ◽  
pp. 17
Author(s):  
Dzintra Atstāja ◽  
Līva Lukševica ◽  
Natālija Cudečka-Puriņa ◽  
Rudīte Vesere ◽  
Rozita Susniene
Keyword(s):  
Economic Evaluation ◽  
Comparative Analysis ◽  
Statistical Data ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Payback Period ◽  
Financial Ratios ◽  
Benefit Analysis ◽  
System Implementation

The aim of this research is to analyse the deposit refund system and to perform economic evaluation of deposit refund system implementation in Latvia. To achieve this, the authors will use following methods: gathering and further analysis of statistical data, comparative analysis and cost benefit analysis. Main conclusions of the research reveal that despite being a costly solution, deposit refund system brings certain benefits and the payback period can be approximately ten years. Moreover, with the increase of the deposit fee the overall financial ratios of the system can be significantly improved. 

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