Contractor's environmental performance assessment system (C-EPAS)

Pao Yue-kong Library Electronic Theses Database

Contractor's environmental performance assessment system (C-EPAS)

 

Author: Wu, Dehua
Title: Contractor's environmental performance assessment system (C-EPAS)
Degree: Ph.D.
Year: 2003
Subject: Hong Kong Polytechnic University -- Dissertations
Construction industry -- Environmental aspects
Department: Dept. of Building and Real Estate
Pages: 1 v. (various pagings) : ill. ; 30 cm.
InnoPac Record: http://library.polyu.edu.hk/record=b1719343
URI: http://theses.lib.polyu.edu.hk/handle/200/5452
Abstract: Construction activities have considerable impacts on both the natural and the built environment in various ways. Existing research works suggest that construction activity has adverse environmental effects, such as the loss of soil and agricultural land, the loss of forests, and the consumption of non-renewable energy resources. Construction activity also contributes to the environmental pollution through releasing dust, toxic fumes and noise during the construction process. In line with the promotion of sustainable development, increasing research efforts have been devoted to investigating methods for mitigating the environmentally adverse effects caused during the process of implementing construction activities. One development is to assess the environmental performance of a construction product at different stages during its life cycle, thus proper action can be taken to mitigate the poor performance if identified. Various assessment systems have been developed for assessing the environmental performance of a construction project. However, it appears that little study has been conducted to find an appropriate way to assess a contractor's environmental performance. In fact, the contractor plays the key role in executing construction activities, and its environmental performance has a strong association with the overall environmental performance in the process of implementing a construction project. Thus the implementation of environmental management across a contractor's operational activities is considered an important contribution towards protecting the environment. To assist contractors understand the level of their environmental performance, a methodology to assess theirenvironmental performance is necessary. This study develops an effective method for assessing a contractor's environmental performance to calculate a contractor's environmental performance index (C-EPI). In order to calculate the C-EPI, a contractor's environmental performance assessment system (C-EPAS) is built up through formulating various parameters and performance assessment benchmarks to present a calculation model. Parameters adopted in the system include the environmental performance factors affecting the contractor's environmental performance and the environmental performance indictors used to evaluate the contractor's environmental performance. A detailed survey was conducted for collecting the data used for determining the weightings of the parameters applied in the assessment system C-EPAS. In applying the system C-EPAS, the value of assessment indicators needs to be allocated. For this, the benchmarks of the indicator values are formulated. In order to calculate the C-EPI, the relative weightings of environmental performance factors to individual performance indicator are determined with applying the Non-Structural Fuzzy Decision System (NSFDS) method. Based on the establishment of the environmental performance factors, indicators, benchmarks and weightings, a quantitative formula is used in calculating the value of C-EPI. The operation procedures in applying C-EPAS have been programmed, leading to the development of the C-EPAS computing system. The principles and functions of the C-EPAS are defined and the procedures for operating the system areflowcharted. The operation system of the C-EPAS has been developed to user-friendly software. The adequacy of the principles embodied in the C-EPAS computing system and the applicability of the system operation procedures of the system have been tested and proven through conducting a case study.

Files in this item

Files Size Format
b17193436.pdf 19.94Mb PDF
Copyright Undertaking
As a bona fide Library user, I declare that:
  1. I will abide by the rules and legal ordinances governing copyright regarding the use of the Database.
  2. I will use the Database for the purpose of my research or private study only and not for circulation or further reproduction or any other purpose.
  3. I agree to indemnify and hold the University harmless from and against any loss, damage, cost, liability or expenses arising from copyright infringement or unauthorized usage.
By downloading any item(s) listed above, you acknowledge that you have read and understood the copyright undertaking as stated above, and agree to be bound by all of its terms.

     

Quick Search

Browse

More Information