Investigating design changes in Malaysian building projects

Yap, Jeffrey Boon Hui; Skitmore, Martin

doi:10.1080/17452007.2017.1384714

Cited by 77 publications

(66 citation statements)

References 77 publications

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“…A pilot survey was firstly conducted with 31 respondents associated with SMCFs (i.e., 3 architects, 4 QS consultants, 9 engineers and 15 contractors) to pre-test the measures developed for this questionnaire form. This is consistent with Yap and Skitmore's (2017) approach to confirm the aptness, clarity and unambiguousness of the survey instrument. The final questionnaire contained four main sections.…”

Section: Research Methods and Proceduressupporting

confidence: 62%

Capabilities-Based Forecasting Model for Innovation Development in Small-and-Medium Construction Firms (Smcfs)

Chen

Lee

Yap

et al. 2018

Journal of Civil Engineering and Management

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Abstract.Triggering innovation among Small-and-Medium Construction Firms (SMCFs) is of paramount importance to gear up the growth of construction firms. Thus, this study aims to develop a Capability-Based forecasting model for innovation development in SMCFs. Built on 157 questionnaires, the model was tested using partial least squares (PLS) technique of structural equation modelling (SEM). The practicality and robustness of this model was then validated by 12 experts. Findings affirm SMCFs making use of multiple Capability-Based approaches would be able to secure their performance via innovation activities. For academia, the new model contributes to the stream of construction innovation management by integrating both technological and organizational innovations in a single framework. For practitioners and policymakers, the model offers valuable input for continuing growth of SMCFs via innovation.

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Section: Research Methods and Proceduressupporting

confidence: 62%

Capabilities-Based Forecasting Model for Innovation Development in Small-and-Medium Construction Firms (Smcfs)

Chen

Lee

Yap

et al. 2018

Journal of Civil Engineering and Management

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“…projects with results clearly demonstrating the design changes as the predominant factor in overall impacting the cost of the project [6,[21][22][23][24].…”

Section: Discussionmentioning

confidence: 99%

“…Yap and Skitmore (2017) [6], conducted a questionnaire survey to establish cost overrun due to design changes and concluded that cost overrun ranges between 5 -20% of the overall project cost in Malaysia. Cox et al (1999) [25], analyzed four successfully executed building projects in the United Kingdom to establish the cost overrun associated with a design change.…”

Section: Quantification Of Cost Overrunmentioning

confidence: 99%

“…Many studies have been conducted on identifying the causes associated with design changes, which depends on the type of project and regional demography. Generally, design changes occur due to actions interconnected to owners, consultants and contractors [6,7]. Few researchers have considered clients as the primary force behind design changes, whereas others have blamed consultants for frequent changes.…”

Section: Introductionmentioning

confidence: 99%

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Design Changes in Construction Projects – Causes and Impact on the Cost

2019

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Isolation of design phase from construction has made the design changes inevitable in construction projects. Extensive literature appraisal has acknowledged the detrimental effect of design changes on project performances. However, the impact and causes of design changes have been divided up, either separately or project specific. As a result, the relationship between impact and causes of design changes could not be established for general construction. The primary objective of this paper is to examine the impact of design changes on project cost and identifying actions responsible for these changes. The objectives of the study were achieved through a systematic review of past literature published in well-established journals, and contents analyzed. From the extensive literature review, it was established that the design change is one of the predominant factors to cost overrun, and in some cases, may upshot into cost overrun between 5 and 40% of the project cost. Also, many causes of design changes resulting in cost overrun within the perspective of the owner, consultant, and contractors are explored. Some projects experienced closure as a result of owner induced design changes, although these changes may not be significant in number. Design changes as a result of consultants and contractors in some cases might have reduced impact but are frequent. For each consideration, most events leading to design changes can be eliminated by improving on communication and coordination between stakeholders. The main contribution of this research is to bring together the impact and causes of design changes on cost under one platform for effectively managing the design process.

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“…This shows that a limited number of authors continuously or frequently contribute to the delay literature, including Lee, H. S. [50][51][52][53], Park, M. [50][51][52][53], Yap, J. B. H. [54][55][56][57][58], Abdul-Rahman, H. [55,57,59,60], and Enshassi, A. [61][62][63][64][65][66][67][68][69].…”

Section: Bibliography Analysismentioning

confidence: 97%

Delay Causes and Emerging Digital Tools: A Novel Model of Delay Analysis, Including Integrated Project Delivery and PMBOK

et al. 2019

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Delay is one of the main challenges of construction projects, and there is still much to overcome in order to reach near zero delay in all construction projects. This project aims to conduct a systematic critical review including a bibliography analysis on delay literature in construction. The main questions consider what has been learnt from a decade investigating delay causes and effects in the construction literature and what factors have been missed in the literature. This paper also presents a new and challenging question regarding how digital tools and associated technologies may prevent any delay in construction projects, which can change the research direction from delay investigations to identifying prevention factors. The paper identifies the delay dataset, including 493 papers investigating delay in construction, and establishes a specific dataset of papers focusing on delay effects and causes (DEC), including 94 selected papers covering different factors examined in over 29 countries such as Iran, India, Turkey, Bangladesh, Saudi Arabia, the United Arab Emirates (UAE), Cambodia, Oman, Malaysia, Taiwan, China, Vietnam, the US, the UK, and Egypt. In addition, the paper identifies 30 critical factors with the frequency of occurrences over three times in the DEC dataset and computes their medians of ranking. This paper also discusses digital tools and methods that can be used for delay analysis and preventions, including MS Project, Oracle Primavera P6, and Open Plan by Deltek. The paper discusses the project schedule delay analysis from project management methodology perspectives. It also discusses the current method's limitations and future directions, which are based on the identification of the deficiency areas. In total, four overlooked factors are identified and suggested, including faulty data analysis, unmatched structure of the research questionnaires with new knowledge and standards [e.g., Project Management Body of Knowledge (PMBOK)], overlooked effects of digital technologies [e.g., Digital twin, Navisworks, Building Information Model (BIM), Geographic Information System (GIS), and Integrated Project Delivery (IPD)], and ignored job-site technologies. In addition, the paper presents the DEC model for future studies, including four main key factors. These factors are resources (e.g., project budgets, labour, material, equipment, and digital tool), project context, stakeholders performance (e.g., owner/client, consultant/designer, contractor, vendor/supplier), and external factors (e.g., ground condition, site location, regulation, natural disaster), which may significantly affect delay prevention and should be concurrently considered in the future delay investigations, since they may be required for designing an effective mitigation strategy when these proof points are identified. This would significantly help to utilise digital systems to prevent time overruns in different construction contexts. Several cases of 24 projects were delayed more than 100% of contract duration [44]. Indonesia 38% o...

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Investigating design changes in Malaysian building projects

Cited by 77 publications

References 77 publications

Capabilities-Based Forecasting Model for Innovation Development in Small-and-Medium Construction Firms (Smcfs)

Capabilities-Based Forecasting Model for Innovation Development in Small-and-Medium Construction Firms (Smcfs)

Design Changes in Construction Projects – Causes and Impact on the Cost

Delay Causes and Emerging Digital Tools: A Novel Model of Delay Analysis, Including Integrated Project Delivery and PMBOK

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