scholarly journals Environmental Cost-Benefit Analysis of Prefabricated Public Housing in Beijing

2019 ◽  
Vol 11 (1) ◽  
pp. 207 ◽  
Author(s):  
Kaicheng Shen ◽  
Chen Cheng ◽  
Xiaodong Li ◽  
Zhihui Zhang

In recent years, prefabricated housing has become increasingly popular and widely promoted due to its potential to improve the construction environment, quality and productivity. To develop prefabricated housing and address housing challenges, the Chinese government is encouraging prefabricated public housing. Consequently, evaluating the environmental performance of prefabricated public housing to identify whether it is environmentally friendly and worthy of investment is urgently needed. This paper compares the costs and benefits of prefabricated public projects and traditional projects based on a questionnaire and field investigation. The paper introduces information from the collected questionnaires on the respondents and projects in Beijing; this information includes the prefabrication rate, technology application, barriers, and industrial performance. The paper also reports a cost-benefit analysis of the changing rates of construction costs and environmental benefits (energy consumption, water usage, construction waste, steel and concrete usage, dust and noise pollution) by using the ∆B/∆C ratio to show the efficiency of prefabricated housing. The results indicate that the ratio is 1.81, which exceeds 1; therefore, investment in prefabricated public housing is environmentally acceptable and efficient. This paper also discusses the efficiencies in different categories and structures with and without incentives. The results show that the costs are higher and the environmental benefits are efficient but not significant; thus, promoting prefabricated public housing is necessary.

1997 ◽  
Vol 8 (3) ◽  
pp. 185-208
Author(s):  
Hege Westskog

In this paper I discuss two questions which the decision maker has to consider before she makes use of the method of cost benefit analysis. First, she has to ask herself if she shares the ethical foundation of environmental cost benefit analysis. If not, could environmental cost benefit analysis be adjusted such that her ethical beliefs are incorporated? Second, if the decision maker shares the ethical foundation of environmental cost-benefit analysis, is this method appropriate when there are individuals in a society that hold other ethical beliefs than those implicitly assumed in an environmental cost-benefit analysis? When discussing these questions I focus on two different perspectives – the deontological and the agency aspect of individual preferences. I argue that the answer to both questions is «no», though the answer to the second question is not as clear as the answer to the first.


2020 ◽  
Vol 15 ◽  
pp. 7-21
Author(s):  
Vera Iváncsics ◽  
Zsolt Szendrei ◽  
József Obertik ◽  
Gábor Balás

Establishing a public park raises a number of methodological issues. The model worked out by HÉTFA Research Institute is suitable for cost-benefit analysis and ex ante viability test of a public park integrated into urban landscape. The paper presents the model by the example of a planned public park at one of the busiest centers of Budapest, the junction of Margit Boulevard and Millennium Park. Such a comprehensive economic evaluation for public parks has not been made in Hungary. First the mechanism of effects was set up, and by using the hedonic price method the project’s costs and benefits were presented with national and international statistical indicators and benchmarks. The investment, that has been started in 2016 with in the initial planning and demolition pays for itself by 2019. The results are tested with sensitivity analysis, which has inter alia shown that if we count by the general approach of the project management - costs are expected to increase by 10% and benefits are to reduce by 10% - investment returns for the city and their inhabitants for 2030. Furthermore, without the effect of property appreciation - the investment turns positive by 2061 thanks only to indirect social, economic, environmental benefits. According to our analysis, the park's development, which relaxes a built-in highly populated urban fabric, has become an economically profitable investment as a result of significant beneficial external effects.


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