Quantifying costs of the productivity loss due to schedule changes in construction projects

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Jae-Seob Lee
Keyword(s):  
Construction Projects ◽  
Design Methodology ◽  
Impact Analysis ◽  
Productivity Loss ◽  
Content Type ◽  
Cost Impact ◽  
Analysis Technique ◽  
Lost Productivity ◽  
Change Order ◽  
Practical Implications

PurposeThe purpose of the paper is to develop a method to integrate the schedule-based analysis with a productivity-based analysis to prove and support the result of the damages calculation.Design/methodology/approachIn this paper, a “cost and schedule impact integration” (CSI2) model is proposed to objectively show and estimate lost productivity due to changes in construction projects.FindingsA schedule-based analysis to include separate tracking of change order costs can be used to predict productivity due to the delay and disruption; changes in construction projects almost always result in delay and disruption. However, the schedule-based analysis needs to be integrated with a productivity-based analysis to prove and support the result of the damages calculation.Practical implicationsThe results of this study expand upon construction practices for proving and quantifying lost productivity due to changes in construction projects.Originality/valueThe contribution of the paper is summarized as the introduction of a “schedule impact analysis” into a “cost impact analysis” technique to assess the damages, as well as to demonstrate the labor productivity impact due to delay and disruption in construction projects.

scholarly journals Combinatorial analysis of eco-innovation drivers in slaughterhouses

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Marcelo Fernandes Pacheco Dias ◽  
Juliany Souza Braga
Keyword(s):  
Design Methodology ◽  
Qualitative Comparative Analysis ◽  
Rio Grande ◽  
Environmental Issues ◽  
Rio Grande Do Sul ◽  
Content Type ◽  
Governmental Organizations ◽  
Non Governmental Organizations ◽  
Analysis Technique ◽  
Practical Implications

Purpose Literature on eco-innovation brings insights that help to understand which factors trigger innovation focused on sustainability in companies. However, when analyzing the studies that comprise such drivers, it appears that most of them were focused only on describing them in isolation. Therefore, this study aims to understand which are the combinations of drivers that favor the adoption of eco-innovation in slaughterhouses located in the Brazilian state of Rio Grande do Sul. Design/methodology/approach This study has used the crisp-set qualitative comparative analysis (csQCA) as the data analysis technique, in addition to the previous application of Most Similar Different Outcome/Most Different Same Outcome (MSDO/MDSO). Findings This study identified eight internal and external drivers that explain the differences in performance of eco-innovative and non-innovative slaughterhouses. These drivers generate 13 combinations of factors capable of favoring the adoption of five types of eco-innovation. Research limitations/implications A limitation identified was the difficulty to obtain information held by companies on environmental issues. In addition, in each company the authors only approached one respondent. Practical implications The use of combinations is identified by companies and governmental and non-governmental organizations to promote eco-innovation in slaughterhouses. Originality/value This study may be considered original for its contribution to the improvement of eco-innovation literature by describing how the drivers identified combine to favor the adoption of certain types of eco-innovation. In addition, the authors also made an original use of csQCA, linked with MSDO/MDSO, in the field of eco-innovation.

Bonding capability of Nigerian contracting firms

2018 ◽  
Vol 25 (6) ◽  
pp. 707-720 ◽  
Author(s):  
Ayodeji Emmanuel Oke
Keyword(s):  
Construction Projects ◽  
Design Methodology ◽  
Insurance Companies ◽  
State Governments ◽  
Legal Capacity ◽  
Years Of Experience ◽  
Past Performance ◽  
Content Type ◽  
Financial Strength ◽  
Practical Implications

Purpose The ability of construction contractors to engage in construction bond agreement with guarantors depends on capital, experience, capacity and continuity. Using these criteria, the purpose of this paper is to provide insights into the bonding capacity of Nigerian contractors. Design/methodology/approach Factors required for bonding were examined based on a set of questions addressed to managers of contracting firms and personnel involved in issuing bonds and guarantees in commercial banks and insurance companies. The scorecard approach was employed to determine the bonding capability of the contractors. Findings Contractors’ financial strength and past performance on previous projects are the two important factors considered by guarantors in granting bond to contractors. However, the condition surrounding the bond, the legal capacity of the guarantor to issue bond and the identity of the guarantor are mostly considered by contractors in approaching a potential guarantor. Using the scorecard approach, about one-third of contractors have the necessary requirements to engage in construction bond agreement with guarantors. This ability of contractors is affected by years of experience of the firm but not by their location nor years of experience of their manager. Practical implications It is necessary for contracting firms to increase their capital base through merging, borrowing, etc., and also engage experienced professionals and workers in the execution of construction projects, as this will eventually improve their bonding ability. Social implications The study is limited to construction contractors registered with Ondo and Lagos State Governments and guarantors that are banks and insurance companies in Nigeria. Originality/value The paper specified various areas of concerns for Nigerian contracting firms in their bid to enhance their bonding ability. This will help them in overcoming various challenges and bottlenecks that may arise in securing bonds and guarantees from guarantors.

Collaboration strategy selection in BIM-enabled construction projects: a perspective through typical collaboration profiles

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Guangchong Chen ◽  
Jiayu Chen ◽  
Yuchun Tang ◽  
Yan Ning ◽  
Qiming Li
Keyword(s):  
Construction Projects ◽  
Design Methodology ◽  
Latent Profile Analysis ◽  
Profile Analysis ◽  
Strategy Selection ◽  
Content Type ◽  
Comprehensive Literature Review ◽  
Collaborative Behavior ◽  
Selection Framework ◽  
Practical Implications

PurposeCollaboration is essential to BIM-enabled construction projects (BECPs). To facilitate collaboration, various strategies have been proposed. Usually, project team adopts single collaboration strategy for convenience. However, BIM-based collaboration is rather dynamic and exposed to a lot of barriers and risks, which easily changes collaboration conditions among partners. Therefore, better understanding of collaboration conditions in BECPs is crucial to develop flexible and suitable strategies. To fill in the gap, this study intends to identify typical collaboration profiles in BECPs and develop a profile-oriented strategy selection framework.Design/methodology/approachThis study establishes a six-dimensional collaborative behavior matric based on a comprehensive literature review to profile collaboration. Then a questionnaire survey is conducted to collect the collaboration data from 162 BECPs in China. Finally, latent profile analysis (LPA) is utilized to identify the typical collaboration profiles in BECPs.FindingsThrough LPA, four profiles are identified, including restricted collaboration profile, smarmy collaboration profile, intuitive collaboration profile, and modest collaboration profile. A profile-oriented strategy selection framework is also established to match strategies with collaboration profiles. Two major categories of strategies are proposed to promote these collaboration profiles including trust building and elevating strategies and collaborative behaviors facilitating strategies.Research limitations/implicationsThese identified profiles can provide an insightful understanding on the diversified collaboration conditions in BECPs.Practical implicationsThe profile-oriented strategy selection framework will help managers develop strategies flexibly to promote collaboration in BECPs.Originality/valueThis study validates four typical collaboration profiles in BECPs. Moreover, a profile-oriented strategy selection framework is also established for collaboration facilitation in BECPs.

Perceived claim sources in the Nigerian construction industry

2014 ◽  
Vol 4 (3) ◽  
pp. 281-295 ◽  
Author(s):  
AbdulLateef A. Olanrewaju ◽  
Paul J. Anavhe
Keyword(s):  
Empirical Study ◽  
Construction Industry ◽  
Design Methodology ◽  
Project Delivery ◽  
Content Type ◽  
Construction Claims ◽  
Change Order ◽  
Delay Cost ◽  
Practical Implications

Purpose – With the increase in the cases of construction claims in Nigeria, many projects have remained uncompleted, while many of those completed receive poor client satisfaction. The purpose of this paper is to investigate how construction claims are managed. Design/methodology/approach – In total, 58 claim factors were identified and addressed to construction professionals through survey to indicate the extent at which the factors contributed to claims. A case study was conducted to illustrate claim management. Findings – In total, 37 factors were the major source of claims. Late payment, delayed approval of change order and delay cost were the extremely influential while the least were storage charges, loss of productivity, and costs of preparing claims. Evidences revealed that all stakeholders should play active roles to deliver “claim free” projects. Practical implications – The findings will be useful to practitioners in the effort to improve project delivery by providing some guidance on claim minimization. It is hoped that this study will encourage academics to conduct more research on this issue. Originality/value – There is no known conclusive empirical study on construction claim factors in Nigeria. In light of this, the findings offer greater opportunities for claim minimization/avoidance.

Estimating numerical scale ratings from text-based service reviews

2020 ◽  
Vol 31 (2) ◽  
pp. 187-202
Author(s):  
Hsiu-Yuan Tsao ◽  
Ming-Yi Chen ◽  
Colin Campbell ◽  
Sean Sands
Keyword(s):  
Language Processing ◽  
Text Analysis ◽  
Design Methodology ◽  
Survey Methods ◽  
Content Type ◽  
Consumer Review ◽  
Numerical Scale ◽  
Analysis Technique ◽  
Textual Data ◽  
Practical Implications

PurposeThis paper develops a generalizable, machine-learning-based method for measuring established marketing constructs using passive analysis of consumer-generated textual data from service reviews. The method is demonstrated using topic and sentiment analysis along dimensions of an existing scale: lodging quality index (LQI).Design/methodology/approachThe method induces numerical scale ratings from text-based data such as consumer reviews. This is accomplished by automatically developing a dictionary from words within a set of existing scale items, rather a more manual process. This dictionary is used to analyze textual consumer review data, inducing topic and sentiment along various dimensions. Data produced is equivalent with Likert scores.FindingsPaired t-tests reveal that the text analysis technique the authors develop produces data that is equivalent to Likert data from the same individual. Results from the authors’ second study apply the method to real-world consumer hotel reviews.Practical implicationsResults demonstrate a novel means of using natural language processing in a way to complement or replace traditional survey methods. The approach the authors outline unlocks the ability to rapidly and efficiently analyze text in terms of any existing scale without the need to first manually develop a dictionary.Originality/valueThe technique makes a methodological contribution by outlining a new means of generating scale-equivalent data from text alone. The method has the potential to both unlock entirely new sources of data and potentially change how service satisfaction is assessed and opens the door for analysis of text in terms of a wider range of constructs.

The use of 5-WHYs technique to eliminate OEE’s speed loss in a manufacturing firm

2015 ◽  
Vol 21 (4) ◽  
pp. 419-435 ◽  
Author(s):  
Samuel Jebaraj Benjamin ◽  
M. Srikamaladevi Marathamuthu ◽  
Uthiyakumar Murugaiah
Keyword(s):  
Lean Manufacturing ◽  
Design Methodology ◽  
Manufacturing Industry ◽  
Research Study ◽  
Value Added ◽  
Quality Loss ◽  
Manufacturing Firm ◽  
Content Type ◽  
Analysis Technique ◽  
Practical Implications

Purpose – The purpose of this paper is to reduce or eliminate the overall equipment effectiveness (OEE’s) speed loss in a lean manufacturing environment. Design/methodology/approach – This action research study uses the lean manufacturing 5-whys analysis technique to reduce or eliminate the speed loss. Findings – The application of the 5-whys analysis technique in a manufacturing industry (XYZ Corporation) completely eliminated its top speed loss and resulted in a valuable savings of USD 32,811.5 per annum. Practical implications – The 5-whys analysis technique which has been primarily known to improve the OEE’s quality loss and changeover loss has been proven to be an effective approach to also tackle speed loss; a loss which has been regarded as the most dominating loss among all the types of OEE’s losses and a difficult one to eliminate. Originality/value – Little or no attempt has been made to date to expand the use of the 5-whys analysis technique beyond its originally intended purpose. The lessons learnt in this study could be applied to other organizations. The outcome of the study has also opened the possibility of widening the horizon of the use of the 5-whys analysis technique beyond its original intended objective and could be applicable to solve other losses of OEE and non-value added activities of lean philosophy in general.

scholarly journals Community interventions in construction health and safety and the implications

2018 ◽  
Vol 23 (3) ◽  
pp. 312-329 ◽  
Author(s):  
Nnedinma Umeokafor
Keyword(s):  
Construction Projects ◽  
Design Methodology ◽  
Community Intervention ◽  
Health And Safety ◽  
Geographic Location ◽  
Community Interventions ◽  
Regulatory Regime ◽  
Content Type ◽  
Cultural Consideration ◽  
Practical Implications

PurposeThe purpose of this study is to examine the involvement of communities – geographical or geopolitical units, which identifies culture, interest and ethnicity – in construction health and safety (H&S) and the implications. This stems from the unexamined hence poorly understood roles of many stakeholders in the construction H&S management and regulatory regime in Nigeria.Design/methodology/approachInterviews with contractors and key informants and a survey of contractors were conducted. Descriptive and inferential statistics and thematic analysis were used.FindingsThere is evidences of community interventions: negotiating with contractors on H&S issues; strongly stipulating that H&S measures are adopted and implemented; and enforcing H&S through both violent and non-violent means. These have no legal backing. There is a relationship between the locations of the projects, urban area and rural area, and six community intervention variables. The study also reveals that among the implications of community interventions in H&S are contractors contextualising H&S in these communities and the tension between parties in construction projects. Again, there is a relationship between the location of the projects and six of the implications including the tension between communities and contractors and between contractors and clients.Practical implicationsIn adequately addressing construction safety, health and environment issues in Nigeria, geographic location and socio-cultural consideration are pertinent, a point for policymakers, communities and contractors.Originality/valueThe study draws attention to the geographic location and socio-cultural explanations for the differences in the H&S management, performance and attitudes of contractors in Nigeria. This is the first study that examines the involvement of communities in H&S and the implications.

Partnering in offshore drilling projects

2017 ◽  
Vol 10 (1) ◽  
pp. 84-108 ◽  
Author(s):  
Sjur Børve ◽  
Tuomas Ahola ◽  
Bjorn Andersen ◽  
Wenche Aarseth
Keyword(s):  
Construction Industry ◽  
Construction Projects ◽  
Design Methodology ◽  
Risk Mitigation ◽  
Offshore Drilling ◽  
Content Type ◽  
Integrated Risk ◽  
Offshore Development ◽  
The Relationship ◽  
Practical Implications

Purpose The purpose of this paper is to evaluate to which extent partnering practices observed in earlier research focussing on the construction industry are applied in offshore development drilling projects. Design/methodology/approach The paper reviews earlier research on project partnering and the relationship-based procurement (RBP) taxonomy. The taxonomy is then empirically applied to describe partnering practices in an incentive-based drilling project in Norway. Findings Many elements of project partnering observed earlier in construction projects were found to characterize offshore development drilling projects. However, as assessed using the RBP framework, the authors found that partnering elements in observed context rated consistently lower than elements previously reported in the construction industry, indicating a lower maturity of partnering practices in the studied context. Practical implications The present study provides a multi-dimensional and systematic description of partnering practices in offshore drilling projects. Project owners can utilize this information to identify partnering elements requiring particular emphasis when initiating and managing drilling projects. Based on the findings, such elements include transparency and open-book auditing, integrated risk mitigation and insurance practices and establishment of authentic leadership. The findings further imply that partnering models cannot be directly applied across industry boundaries but must be tailored to fit the salient characteristics of each context. Originality/value The paper systematically describes to which extent specific partnering elements of the RBP taxonomy are applied in offshore drilling projects.

Predicting the project time and costs using EVM based on gray numbers

2019 ◽  
Vol 26 (9) ◽  
pp. 2107-2119 ◽  
Author(s):  
Samira Nadafi ◽  
Seyed Hamed Moosavirad ◽  
Shahram Ariafar
Keyword(s):  
Completion Time ◽  
Construction Projects ◽  
Design Methodology ◽  
Value Management ◽  
Earned Value ◽  
Earned Value Management ◽  
Content Type ◽  
Project Completion ◽  
Practical Implications ◽  
Significant Point

PurposeThe purpose of this paper is to determine the project completion time and cost under non-deterministic conditions using interval gray numbers (IGNs).Design/methodology/approachThe earned value management (EVM) method based on the IGN has been developed.FindingsThe EVM method based on the IGN has been verified by a numerical example that can be applied to construction projects.Practical implicationsThe EVM method, based on the gray numbers, reduces the budget and time shortage risk. Also, using this method, the managers would not be restricted to provide very exact values in their progress reports in the non-deterministic conditions.Originality/valueOne notable and significant point in all projects during the execution process is to estimate the project completion time and cost. However, non-deterministic conditions for both planned and actual physical completion percentage of projects have not been considered for predicting the project completion time and cost in the literature. Therefore, the novelty of this paper is the prediction of project completion time and cost under non-deterministic conditions using IGN.

scholarly journals Exploring motivations and satisfaction of ecolodge patrons in desert areas of Iran

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Pouya Chogan
Keyword(s):  
Design Methodology ◽  
Decision Makers ◽  
Content Type ◽  
Old Adults ◽  
Highly Educated ◽  
Analysis Technique ◽  
Travel Motivations ◽  
Desert Areas ◽  
Travel Satisfaction ◽  
Practical Implications

PurposeThis paper explores travel motivations and characteristics of European ecotourists who visit ecolodges in desert areas of Iran. It also evaluates 26 ecolodge attributes from the perspective of the European patrons.Design/methodology/approachDifferent methods were adopted for the aim of this study, comprising the importance-performance analysis technique and a questionnaire survey.FindingsA survey of 386 patrons in 12 selected ecolodges found that most European ecotourists were middle-aged to old adults (36–65 years old) and highly educated who traveled with their spouses or friends. Ecotourists generally stayed in ecolodges for 2–5 days to learn and explore nature and be in the wilderness and undisturbed nature. This study also showed that the ecolodges are successful to a large extent, yet they need to focus more on their services and facilities.Practical implicationsDue to the significance of international tourists for the economy, decision-makers and managers must learn about tourists' motivations and travel satisfaction to be able to compete against their rivals in the marketplace. The result of this study may help the owners and managers of ecolodges in desert areas understand the needs and priorities of European tourists.Originality/valueThis study expanded the existing literature of motivations and satisfaction of tourists in the ecolodge industry.

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