scholarly journals SCENARIOS FOR LIFE CYCLE ENVIRONMENTAL BURDEN REDUCTION OF ARCHITECTURAL STEEL STRUCTURES AND THEIR EVALUATION

2000 ◽  
Vol 65 (533) ◽  
pp. 167-173 ◽  
Author(s):  
Mamoru IWATA ◽  
Hitoshi DOHNOMAE ◽  
Yuji HISAMATSU
Keyword(s):  
Life Cycle ◽  
Steel Structures ◽  
Environmental Burden

Reuse System of Building Steel Structures - Structural Performance of Reusable Members and Practical Examples

2012 ◽  
Vol 517 ◽  
pp. 513-521 ◽  
Author(s):  
Masanori Fujita
Keyword(s):  
Life Cycle ◽  
Steel Structures ◽  
Structural Member ◽  
Structural Performance ◽  
Structural Members ◽  
Crucial Element ◽  
Environmental Burden ◽  
The Past ◽  
Steel Members ◽  
Reuse System

Longevity, reuse and recycle can be effective in reducing environmental burden in the life cycle of building steel structures. Longevity is the most crucial element in reducing the environmental burden of building steel structures. Nevertheless, there are always a number of buildings that need to be demolished for physical, architectural, economic, and social reasons. When such building steel structures have been demolished in the past, their structural members have been scrapped for recycling. Steel, by nature, is the only type of structural member that can be fabricated. Even without special joints that facilitate demolition work, steel members can be reused after minor fabrication procedures such as cutting, drilling, and welding. In this paper we discuss structural performance of reusable members and practical examples using reusable members.

scholarly journals THE IMPACT OF PRODUCT LIFE CYCLE TECHNIQUE IN REDUCING COSTS AND ACHIEVING SUSTAINABLE DEVELOPMENT GOALS, A CASE STUDY IN THE RUSTAN STEEL STRUCTURE PRODUCTION COMPANY IN ERBIL

2021 ◽  
Vol 03 (07) ◽  
pp. 314-328
Author(s):  
Ghazi Abdulazeez SULAIMAN BAG ◽  
Rafiq Faraj MAHMOOD
Keyword(s):  
Corporate Governance ◽  
Life Cycle ◽  
Life Cycle Cost ◽  
Product Life Cycle ◽  
Steel Structures ◽  
Product Life ◽  
Technical Requirements ◽  
The Cost ◽  
The Impact

This research was - case study in Rstin company for the steel structures in Erbil- addressed the cost technique of product life cycle, as discussed the kinds, relevance and the stages of the life cycle of the product, also it referred to the corporate governance of discussing its inception the concept and importance of the principles, objectives, and mechanisms was addressed to the technical aspects of the overlap between the cost of the product life cycle corporate governance and show the appropriate techniques used in each stage of the life cycle of the product and how it achieved by a reduction of costs. The result of this study indicates that the integration between the product life cycle cost and corporate governance works on reduce costs through the various stages of product life cycle. It also concluded that this integration increases the company ability to compete in market which leads to rise in its market share and eventually lead to maximize the profit which has been achieved through the optimal use of a company available resources. It also found that the techniques of life cycle cost of the product cannot be applied without support of the company directors, throughout the technical requirements of the application. Corporate governance ensures directors of the company to utilize firm resources which makes the company to achieve several stakeholders' objectives.

21.14: Life cycle analysis of steel structures: Why the recycling potential must be considered

ce/papers ◽  
2017 ◽  
Vol 1 (2-3) ◽  
pp. 4614-4619
Author(s):  
Bernhard Hauke ◽  
Markus Kuhnhenne ◽  
Johannes Kreissig
Keyword(s):  
Life Cycle ◽  
Life Cycle Analysis ◽  
Steel Structures ◽  
Recycling Potential

Life Cycle Assessment of Cathode Copper Production

2017 ◽  
Vol 898 ◽  
pp. 2422-2431
Author(s):  
Hao Li ◽  
Xian Zheng Gong ◽  
Zhi Hong Wang ◽  
Yao Li
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impact ◽  
Impact Category ◽  
Clean Energy ◽  
Copper Production ◽  
Life Cycle Approach ◽  
Pyrometallurgical Process ◽  
Environmental Burden ◽  
Cathode Copper

The environmental impact of Chinese cathode copper production was identified and quantified in the context of pyrometallurgy ical and hydrometallurgical method by life cycle approach. Combined with the situation of copper resources in China, the copper ores mining, mineral processing, transportation and smelting sector, were analyzed in detail. The normalization results shows that abiotic depletion is the largest environmental impact in both Pyro-and hydro-metallurgical methods, which were 28.4 kg Sb eq and 32.0 kg Sb eq, respectively. Electrolytic refining is the key process in hydrometallurgical life cycle environmental burden (50.21%), and the mining process contributed the largest environmental impact (17.94%) in pyrometallurgical process. In addition, the total environmental burden of pyrometallurgical process is 1.15 times of hydrometallurgical process. Pyrometallurgical methods has many environmental impact category which were much higher than hydrometallurgical because of the more use of fossil fuels in smelting process. Based on the life cycle assessment results, the key factors to reduce the overall environmental impact for China’s cathode copper production include optimizing the efficiency of copper resource, and clean energy sources for electricity production.

Optimality and Acceptance Criteria in Offshore Design

2004 ◽  
Vol 126 (3) ◽  
pp. 258-264 ◽  
Author(s):  
Oliver Ku¨bler ◽  
Michael Havbro Faber
Keyword(s):  
Life Cycle ◽  
Optimal Design ◽  
Net Present Value ◽  
Steel Structures ◽  
Offshore Structures ◽  
Theoretical Problem ◽  
Offshore Structure ◽  
Suggested Approach ◽  
Structural Capacity ◽  
Wide Range

The optimal design of offshore structures is formulated as a decision theoretical problem. The objective is to maximize the expected net present value of the life cycle benefit. The general optimization problem is simplified by taking into account the cost impacts of a possible reconstruction of the structure. The analytical solution to this problem has been derived for the case, where failure events follow a stationary Poisson process. The life cycle benefit is formulated in terms of the production profile, the design and construction costs, failure costs and reconstruction costs. In order to assess the effect of potential loss of lives, the costs of fatalities are included applying the concept of the Implied Costs of Averting a Fatality ICAF. The suggested approach to optimal design, which can be applied for any type of offshore structure, is exemplified considering the special case of steel structures. Here, it is standard to represent the ultimate structural capacity in terms of the Reserve Strength Ratio RSR. For the purpose of illustration, the relation between material usage and RSR, which is valid for monopod structures, is applied. Optimal RSR’s and corresponding annual failure rates are assessed for both manned and unmanned structures covering a wide range of different realistic ratios between the potential revenues and costs for construction, failure and reconstruction.

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