Using SIA and DEMATEL to Identify the Factors Affecting Design Delays

Abstract

Design delays can adversely affect the total completion time of a construction project. Factors affecting the delays of design duration are complicated and interrelated. This study proposes a methodology to support identify key driving factors affecting design delays and sieve out the initiating delay factors for improvement. The core of the methodology is to integrate a "satisfied importance analysis" and a "decision making trial and evaluation laboratory technique". A real-world design project in Taiwan is applied to examine the benefits of the methodology. In this case study, four first-level delay factors and 17 second-level delay subfactors are defined. The "organization's decision makings and budget constraints" is identified as the key driving factor causing design delays in this case project. Top management of the case project appreciates the application results. KEYWORDS: design delays, satisfied importance analysis (SIA), decision making trial and evaluation laboratory technique (DEMATEL), influence-relations (IR) map

Energy-Saving Oriented Matrix Management Mode and its Key Techniques for Engineering

“…With the rapid development of town, construction industry developments quickly, and much problems appeared. So far, energy consumption in construction industry is about 30% of the gross society energy consumption, and it is about 2 to 3 times consumption of the developed country [1]. Energy-saving in construction industry is one of the most potential, effective energy-saving domain.…”

“…Scholars in China and abroad have researched in it. e.g., construction energy consumption has been invested in England since 1976; statistic database of construction energy consumption has been built in USA [2]; in Australia, green building is studied from air-condition, heating, illumination, material selecting and so on [3]; in Germany, strict standards are made [4]; Appupillai Baskaran studies air flow around buildings using computational fluid dynamics techniques [5]; Lin Wang discusses energy-saving design of residential building [1]. So far, study on energy-saving oriented matrix management mode and key techniques for engineering is still absent.…”