Value-Engineering Methodology for the Selection of an Optimal Bridge System

Author(s):  
Ahmad A. Mousa ◽  
Mohab Hussein ◽  
Ahmed Farouk Kineber

Maintaining and enhancing the functionality of the infrastructure at an affordable cost are major challenges for decision makers, particularly given the need to cope with growing societal and transportation demands. This study introduces a systematic multi-criteria value engineering (VE) approach for the selection of a sustainable bridge system. A thorough VE analysis for a proposed long-span bridge in New Jersey, USA was carried out as a pilot study. The function analysis system technique was used to develop logical relationships between the project’s functions. A detailed 100-year life-cycle cost analysis (LCCA) was conducted. The study developed and evaluated eight alternative designs for deck and superstructure systems against set VE criteria comprising constructability, maintenance strategies, and environmental impact. A relative value index was used as an unbiased measure for the selection of the optimal structural system. With total savings of approximately 21% of the original design ($132.5 million), steel plate girders with a high-performance lightweight steel grid deck system have proven to “outvalue” the other alternatives, including the preferred preliminary alternative (PPA). Design engineers and decision makers can use this methodology as a systematic and convenient guide for the selection of economical and sustainable bridge systems. As such, it is necessary to re-evaluate the current practices and policies used for this purpose.

2017 ◽  
Vol 7 (1) ◽  
pp. 31-41
Author(s):  
Sugianto Sugianto

due torecent economic situation, contractors have een required to be able to minimize cost and the same time to also maintain the quality of the project. One of the methods that can be apllied as an alternative to achieve it is value engineering. The aim of this studyis to apply this method in a construction project. The construction project ofHousing development in charm tugu rante type 45 residence district  blitar Rp 99,792,000.00Value engineering method consist of 4 ( five ) phases. It covers information phase, which contains of identification of the high-cost  work and the unnecessary cost ( function analysis ); creative phase; analyzing phase which includes the selection of alternative dealing with the analysis of its benefit and cost, it project life cycle cost and the selection of alternatives by using AHP method; and Recommendation phase.By implementing thismethod,the project cost can be minimized in 5 area of wark,woll work Rp1,902,459,wall strucco work Rp3,941,693,the work of the faundotion stone,soil excavation Rp211,616,excavation work Rp782,012,ceramic work Rp294,775. Thus total reduction cost that be achieved by using this method is upto


2017 ◽  
Vol 7 (1) ◽  
pp. 31-41
Author(s):  
Sugianto Sugianto

due torecent economic situation, contractors have een required to be able to minimize cost and the same time to also maintain the quality of the project. One of the methods that can be apllied as an alternative to achieve it is value engineering. The aim of this studyis to apply this method in a construction project. The construction project ofHousing development in charm tugu rante type 45 residence district  blitar Rp 99,792,000.00Value engineering method consist of 4 ( five ) phases. It covers information phase, which contains of identification of the high-cost  work and the unnecessary cost ( function analysis ); creative phase; analyzing phase which includes the selection of alternative dealing with the analysis of its benefit and cost, it project life cycle cost and the selection of alternatives by using AHP method; and Recommendation phase.By implementing thismethod,the project cost can be minimized in 5 area of wark,woll work Rp1,902,459,wall strucco work Rp3,941,693,the work of the faundotion stone,soil excavation Rp211,616,excavation work Rp782,012,ceramic work Rp294,775. Thus total reduction cost that be achieved by using this method is upto


Author(s):  
Nagwan El- Sayed Abo El- Enen, Khaled Mohamed Heiza, Ibrahim Nagwan El- Sayed Abo El- Enen, Khaled Mohamed Heiza, Ibrahim

Due to recent environmental and Political requirements, and regulations of the construction industry, in which bridges is one of its important category, deciding its proper constructability is becoming vital. Therefor the objective of this research is to develop a decision model for selecting proper constructability of green bridges constructions, the model was built based on analytical network process (the ANP) soft were program, integrated with value engineering approach. For this analytical study different parameters are identified and ranked to be implemented for the decision model developed on the biases of four surveying studies conducted in this study the results of these surveying's was be analyzed by using the statically analytical program; "SPSS". Model validation and reliability is carried out using the analytical network process (ANP) for statistically analysis using case study which is a cable bridge project constructed in Egypt. ANP proves to be an effective framework for assessing readiness to adopt and facilitating TQM. The result of the study illustrate that the proper constructability alternative in green bridge concept for this determinate project is the concrete box girder type, upon this there is a cost loss of $3, 500 per square meter, equivalent to 50% losses, respect to the life cycle cost this is due to did not using the best alternate of the estimated project. upon the possibility of applying this decision model to such studies of infrastructure projects, and with respect to the results gained; it is recommend to apply the ANP model with respect to VE procedures to bridges projects of all kinds and their determinants, as well as all other construction projects, especially national ones, in future studies, which allows decision- makers to make decisions that aim at the highest quality without any waste in unnecessary costs.


2007 ◽  
Vol 2 (3) ◽  
pp. 76 ◽  
Author(s):  
Michael H. Boock ◽  
May Chau

Objective - The authors describe a simple and effective tool for selecting digitization projects from competing alternatives, providing decision makers with objective, quantitative data. Methods - The paper adopts the value engineering methodology for the selection, evaluation and ranking of digitization project proposals. Project selection steps are described. Selection criteria are developed. Digitization costs are presented as an equation. Project value is determined by calculating projected performance of digital collections based on the established criteria over cost. Results - Scenarios are presented that evaluate and rank projects based on an evaluation of performance criteria and cost. The communication and use of rating criteria provides selectors with information about how proposed collections are evaluated. The transparency of the process output is easily communicated to stakeholders. Conclusions - Value engineering methodology provides a tool and a process that gives decision makers a set of objective, quantitative data upon which selection of digitization projects is based. This approach simplifies the selection process, and creates transparency so that all stakeholders are able to see why a decision was made.


Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1794
Author(s):  
José Pérez-Rigueiro ◽  
Manuel Elices ◽  
Gustavo R. Plaza ◽  
Gustavo V. Guinea

The prominence of spider silk as a hallmark in biomimetics relies not only on its unrivalled mechanical properties, but also on how these properties are the result of a set of original design principles. In this sense, the study of spider silk summarizes most of the main topics relevant to the field and, consequently, offers a nice example on how these topics could be considered in other biomimetic systems. This review is intended to present a selection of some of the essential design principles that underlie the singular microstructure of major ampullate gland silk, as well as to show how the interplay between them leads to the outstanding tensile behavior of spider silk. Following this rationale, the mechanical behavior of the material is analyzed in detail and connected with its main microstructural features, specifically with those derived from the semicrystalline organization of the fibers. Establishing the relationship between mechanical properties and microstructure in spider silk not only offers a vivid image of the paths explored by nature in the search for high performance materials, but is also a valuable guide for the development of new artificial fibers inspired in their natural counterparts.


2019 ◽  
Vol 121 (1) ◽  
pp. 177-214 ◽  
Author(s):  
Yan Liang ◽  
Jialei Yana ◽  
Zhanqi Cheng ◽  
Huai Chen ◽  
Ruimin Mao

2018 ◽  
Vol 7 (4.35) ◽  
pp. 431 ◽  
Author(s):  
Fathoni Usman ◽  
Nur Adibah Jalaluddin ◽  
Sumi Amariena Hamim

Implementation of Value Engineering (VE) in the construction industry has become a proven technique for cost optimization. This paper presents a review of the implementation of BIM in construction industry. The factors that triggered and hinder the implementation of VE and BIM in the current industry and a case study of the application of VE using BIM for cost optimization of renovation works are also discussed. The project which was used for the case study is the renovation of shop lot units to be used as a student centre where student activities will be placed. 3D models of the project were developed as BIM model that provide strong visualization when creating alternatives for VE processes. The function analysis, risk analysis and life-cycle cost analysis were applied to determine the value index for each developed alternative. It shows that the implementation had successfully reduced the cost by approximately 27% and the value of the project increased after the process.


Jurnal Teknik ◽  
2020 ◽  
Vol 18 (2) ◽  
pp. 159-170
Author(s):  
Anisha Dian Iswahyuni

The packaging design of a product is a special attraction for consumers. The right design would be able to increase sales of a product. The purpose of this research is to get the best packaging by designing or creating a packaging concept according to the needs and desires of consumers based on the packaging analysis used. The packaging development method is carried out with a product development approach and value engineering by improving performance based on consumer desires using the FAST method (Function Analysis System Technique). Based on the results of the identification of consumer needs, the testing phase, and the selection of alternative packaging development concepts to the concept analysis, the final product for the selected breadfruit stick packaging is a custom packaging printing made of solid aluminum foil pouch, with the custom size of 14x23cm, printed sticker, full printed design, net size 100-200 grams, packaging basic color of gold, original flavor variant, the price ranges from Rp. 10,000 to Rp. 20,000, using a seal (sealer) and having PIRT and Halal certification. With the proposed packaging, it is hoped that the sales of breadfruit stick products would be increased.


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