An Analysis of the Distribution of Time Variance for Building Projects

Wang, J. Y.; Fisher, Norman; Sun, Chao; Wu, Da-Xiong

doi:10.1080/15623599.2003.10773037

Cited by 2 publications

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An effective analysis of variations and variation orders requires a comprehensive understanding of the root causes of variations [14]. Causes of variation orders were identified by many researchers [2,[15][16][17][18][19][20]. Based on their findings, 55 causes of variation orders were identified.…”

Section: Resultsmentioning

confidence: 99%

Causes of Variation Orders in Road Construction Projects in Sri Lanka

Halwatura

Ranasinghe

2013

ISRN Construction Engineering

View full text Add to dashboard Cite

One of the most important problems in the construction industry is variations. They occur in every construction project and the magnitude of these variations varies considerably from project to project. Hence, the variations orders bear great importance right from the inception to completion in the construction industry. Most of the road construction projects in Sri Lanka have experienced a large number of variation orders. The client had to spend more than what was initially estimated in most cases. Sometimes, disputes and unnecessary delays occur due to variations. This study attempted to reveal the possible causes of variation orders in the road construction projects in Sri Lanka. The data were collected through a literature review, a case study analysis focused on 11 road construction projects, and a questionnaire administered to professionals in the road construction industry in Sri Lanka. The study found out that the causes in the local context differ from those in the international context. According to the questionnaire survey, poor estimation was the most significant cause of variation orders. Unforeseen site conditions, political pressure during construction stage, poor investigation, and client-initiated variations occupy the 2nd to 5th places, respectively, in the ranking. This ranking was further proven through the case study analysis.

show abstract

Section: Resultsmentioning

confidence: 99%

Causes of Variation Orders in Road Construction Projects in Sri Lanka

Halwatura

Ranasinghe

2013

ISRN Construction Engineering

View full text Add to dashboard Cite

show abstract

“…"Insufficient number of staff for contractor" has a high importance index as mentioned before, but in the research of Arditi et al (1985), Ogunlana et al (1996), Dayton and Erickson (2006), Alaghbari et al (2007), Chan and Kumaraswamy (1996), Al-Khalil and Al-Ghafly (1999a, b), and Wang et al (2003) this factor has a low rank. This contradiction was because that research was conducted in places with different conditions including more human resources, such as Turkey, Saudi Arabia, Hong Kong, Indonesia, Thailand, and Malaysia.…”

Section: Consultants' Viewsmentioning

confidence: 88%

Delays and cost overruns in the construction projects in the Gaza Strip

Enshassi

Al-Najjar

Kumaraswamy

2009

Journal of Financial Management of Property and Construction

213

164

View full text Add to dashboard Cite

Purpose -Delays and cost overruns are evidently frequent problems in the construction industries of many developed and developing countries. The purpose of this paper is to assess factors leading to time overruns (delays) and cost overruns in construction projects in the Gaza Strip. Since there appear to be additional special contributors to delays here, the relative perceptions of contractors, consultants and owners are compared, based on a listing of causal factors derived from previous studies elsewhere, together with other factors arising from special conditions in the Gaza Strip. Design/methodology/approach -A survey of a randomly selected samples yielded responses from 66 contractors, 27 consultants, and 31 owners. The survey included 110 delay factors/causes which were grouped into 12 major groups. The same survey also included 42 cost overrun factors. The level of importance of the delays and cost overrun factors were measured and ranked by their importance indexes, according to the perspectives of contractors, consultants, and owners. Findings -There seems to be a general agreement between contractors, consultants and owners regarding causes of delays and cost overruns. The main four causes of time delays included strikes and border closures, material-related factors, lack of materials in markets, and delays in materials delivery to the site. Additionally, the main three causes for cost overruns included price fluctuations of construction materials, contractor delays in material and equipment delivery, and inflation. Originality/value -The outcome of this paper will assist owners, contractors, and consultants in understanding the reasons for delays and cost overruns, thus eliminating or minimizing these causes. This could be achieved by better management of the projects and by finding new methods for storing the critical materials from the beginning of the project. Furthermore, the local government is advised to initiate legislation to overcome problems arising from monopolies in the supply of construction materials.

show abstract

An Analysis of the Distribution of Time Variance for Building Projects

Cited by 2 publications

References 10 publications

Causes of Variation Orders in Road Construction Projects in Sri Lanka

Causes of Variation Orders in Road Construction Projects in Sri Lanka

Delays and cost overruns in the construction projects in the Gaza Strip

Contact Info

Product

Resources

About