Abstract
Despite the heighten focus on environmental sustainability for green construction, rare research has been conducted to analyze such projects, especially in the aspect of their schedule delay and causal factors. Conducting a survey in which 30 companies in the Singapore construction industry participated, this study first identified the degree of project delay in 220 traditional and 96 green construction projects performed in Singapore. Next, a set of factors affecting project delay was identified based on various literatures to determine the most influential factors for both green and traditional projects. The analysis result established that 15.91% of the traditional projects were delayed while 32.29% of the green construction projects were completed behind schedule. Furthermore, the top 5 factors causing delay in green projects were: (1) speed of decision making by client; (2) speed of decision making involving all project teams; (3) communication/coordination between key parties; (4) level of experience of consultants; and (5) difficulties in financing project by contractors. Lastly, recommendations were introduced to reduce schedule delay in green construction projects based on the analysis results. This study will serve as s a base for further research on the enhancement of green construction schedule performance.
Highlights
The construction industry is a key economic growth sector in Singapore and plays a dominant role in providing employment to support the future development of Singapore (Navon 2005)
In order to intensify the efforts in speeding up the development of green buildings in Singapore, all new building developments and major renovations which are over 2000m2 in size are required to achieve green mark certifications (Building and Construction Authority 2008)
Since all new building construction projects in Singapore are obliged to comply with Green Mark Scheme standards, it is essential to look into how green building construction project performance can be managed more effectively
Summary
The construction industry is a key economic growth sector in Singapore and plays a dominant role in providing employment to support the future development of Singapore (Navon 2005). In addition to the green mark scheme, BCA formulated the 1st and 2nd Green Building Masterplan together with other efforts to thrust forward in developing more green buildings in Singapore. By year 2030, the Inter-Ministerial Committee on Sustainable Development (IMCSD) targets to have at least 80% of the building in Singapore to achieve the BCA green mark certified rating (BCA 2009). Sustainable construction is applied throughout the entire life cycle of construction, from preconstruction to disposal of the building. Such construction aimed to reduce the impact of the construction practice on the environment through its planning and managing of a construction project complying with the contract document (Glavinich 2008; Pitt et al 2008).
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