scholarly journals Critical Factors Causing Material Wastes in Building Construction Projects

2021 ◽  
Vol 17 (2) ◽  
pp. 1-17
Author(s):  
Shitaw Tafesse ◽  
◽  
Tamene Adugna ◽  
Keyword(s):  
Risk Factors ◽  
Construction Projects ◽  
Building Construction ◽  
Site Management ◽  
Critical Factors ◽  
Construction Sites ◽  
Focus Group Discussions ◽  
Group Discussions ◽  
Waste Minimisation ◽  
Poor Site

Construction sites generate a large amount of material wastes and have become a common problem with associated risks in Ethiopia. However, the sources of such wastes are not well recognised. Therefore, the purpose of this research was to analyse the risk factors that contribute to material wastes in building construction projects. To achieve this goal, the factors that cause construction wastes were identified from literature and construction experts via focus group discussions and personal interviews. Following this, the factors were subjected to a questionnaire survey to identify the most critical factors of construction wastes. The questionnaire was distributed purposively to 85 construction experts representing contractors, consultants, and clients and 70 questionnaires were duly received for analysis. The data were analysed with a mean score and ranked to identify the most critical factors generating material wastes at construction sites. According to the results of the study frequent changes made to the design, poor strategies for waste minimisation, improper storage of material, poor site management, poor planning and supervision, and errors of contract document were the most critical factors causing construction wastes.

Determining the Causes of Delay by Using Factor Analysis in Tehran’s Construction Projects

2015 ◽  
Vol 735 ◽  
pp. 109-116 ◽  
Author(s):  
Mahdi Rafieizonooz ◽  
Mohd Razman Salim ◽  
Elnaz Khankhaje ◽  
Mohd Warid Hussin ◽  
Ali Zarebidaki ◽  
...  
Keyword(s):  
Factor Analysis ◽  
Construction Industry ◽  
Construction Projects ◽  
Descriptive Analysis ◽  
Site Management ◽  
Critical Factors ◽  
Skilled Workers ◽  
Construction Contracts ◽  
Poor Site ◽  
Lack Of Commitment

Construction industry is one of the most profitable sectors in Iran’s economic. Delay is common problem in the construction projects in Iran. By considering all viewpoints of the parties, this research identified the most effective and severe causes of delay in construction projects in the Capital of Iran, Tehran. Questionnaires were distributed among respondents who are involved in the construction project in Tehran. The process of data analysis and discussions were conducted based on the two statistical techniques namely descriptive analysis (RII) and factor analysis. Using factor analysis, most critical factors of Tehran’s construction delay were recognized as: (1) lack of commitment; (2) inefficient site management; (3) poor site coordination; (4) Complexity in heritage and legislation; (5) Lack of estimation skills and skilled workers; (6) Lack of communication between parties; (7) Improper planning; and (8) Lack of clarity in contract. These results are anticipated to be important contributions to construction projects in Tehran in controlling the time overruns in construction contracts.

Quantification Methods for Construction Waste Generation at Construction Sites: A Review

2010 ◽  
Vol 163-167 ◽  
pp. 4564-4569 ◽  
Author(s):  
Ahmad Firman Masudi ◽  
Che Rosmani Che Hassan ◽  
Noor Zalina Mahmood ◽  
Siti Nazziera Mokhtar ◽  
Nik Meriam Sulaiman
Keyword(s):  
Construction Projects ◽  
Software Tool ◽  
Waste Reduction ◽  
Building Construction ◽  
Civil Infrastructure ◽  
Waste Generation ◽  
Construction Sites ◽  
Construction Waste ◽  
Future Direction ◽  
User Friendly

Estimation of construction and demolition (C&D) waste amount is crucial for implementing waste minimization program. Estimation of C&D waste amount generated is a mean in assessing the potential for waste reduction. Thus, a better understanding of C&D waste generation in terms of causes and sources can be achieved. The aim of this paper is to conduct a review on available construction waste quantification methods from previous studies, which have been utilized in certain countries, while attempting to choose the most suitable and applicable method, and to direct future studies for better quantification methods. This review is applicable only for building construction projects and did not include civil/infrastructure, demolition, renovation, and excavation projects. Six quantification methods and/or waste audit tool available from literatures are discussed, which include their limitation and future direction for this study. It is believed that some combination of these quantification methods could make a good impact in accurate numerical estimation of construction waste amount generated in building construction projects. A strong and accurate database as presented by Soliz-Guzman, combined with effective, vital, and resourceful estimation suggested by Jalali’s Global Index (GI), also with the aid of user-friendly software tool like the SMARTAudit could provide an effective and reliable waste quantification.

scholarly journals Assessment of Lean Construction Practice at Selected Construction Sites in Klang Valley

2018 ◽  
Vol 7 (4.35) ◽  
pp. 125
Author(s):  
Mohammed Elhaj Alsoufi Mohammed Ahmed ◽  
Leong Sing Wong
Keyword(s):  
Construction Projects ◽  
Management Strategies ◽  
Health And Safety ◽  
Lean Construction ◽  
Building Construction ◽  
Total Quality ◽  
Construction Sites ◽  
Construction Techniques ◽  
Comprehensive Survey ◽  
Klang Valley

Lean construction is known to reduce costs, improve profit or increase competitiveness, increase business opportunity and customer base, improve health and safety, improve quality, yield higher employee salaries, shorten production timescales and increase customer satisfaction. With little attention on research of lean construction in Malaysia, it remains a problem of non-standardization in waste elimination strategies thereby sub optimizing waste management in Malaysian construction projects. The objective of this paper is to evaluate lean construction techniques and measure the feasibility in term of their applicability for construction at selected sites in Klang Valley, Malaysia. The study is novel and significant in a sense that it can help to develop reliable management strategies for implementing lean construction technologies at the construction sites. Case studies were carried out as a strategic method and comprehensive survey that covers both questionnaire and interview were adopted as a method of data collection. Likert scale 1 to 5 was used in the written questionnaire with workers in order to assess the level of awareness and acceptance on the need of lean construction techniques for eight construction sites in various places and with various categories (infrastructure and building construction projects) in Klang Valley, Malaysia. Later, semi structural interview was conducted with expert judgment to justify the factors which affect the implementation of lean construction at the construction sites. From the study outcome, it was discovered that both Total Quality Management (TQM) and Industrialized Building System (IBS) were rated by the respondents to be highly effective in both infrastructure and building construction projects.

Bar Victimization of Women

1997 ◽  
Vol 21 (4) ◽  
pp. 509-525 ◽  
Author(s):  
Kathleen A. Parks ◽  
Brenda A. Miller
Keyword(s):  
Risk Factors ◽  
Sexual Aggression ◽  
Qualitative Data ◽  
Physical Violence ◽  
Focus Group Discussions ◽  
Group Discussions ◽  
Alcohol And Drug Use ◽  
The Public ◽  
Public Context ◽  
Preliminary Description

Little is known about the types and specific circumstances that surround the victimization of women who drink in the public context of bars. This study provides a preliminary description of the types of violence experienced by women bar drinkers and the roles of exposure and impairment as risk factors for encountering bar-related aggression. Both quantitative and qualitative data were collected from 52 women bar drinkers through self-administered questionnaires and focus-group discussions about their lifestyles, alcohol and drug use, and patterns of bar drinking. Nearly half of the women (48.1%) had experienced physical violence (e.g., assault) and one third (32.6%) had experienced either attempted or completed rape associated with drinking in a bar. Our findings indicate that women who regularly drink in bars experience a substantial amount of physical and sexual aggression associated with these settings.

scholarly journals Pelibatan Masyarakat dalam Pengelolaan Situs Gunung Wingko, Bantul

Bakti Budaya ◽  
2018 ◽  
Vol 1 (2) ◽  
pp. 153
Author(s):  
Anggraeni Anggraeni
Keyword(s):  
Focus Group ◽  
Cultural Heritage ◽  
Local People ◽  
Site Management ◽  
Focus Group Discussions ◽  
Group Discussions ◽  
Tourist Destinations ◽  
Information Center ◽  
A Site

Archaeological researches at Gunung Wingko Site, Kecamatan Sanden, Bantul, had been conducted formore than 40 years ago. Nevertheless, the results of observations, interviews, Focus Group Discussions(FGD), and archaeological exhibition on Sanden Fair 2018 indicate that the existence and the culturalsignifcance of the site had only been known by certain communities. Local people unawareness of theexistence and the cultural signifcance of the site had so far caused site damage. Terefore, a number ofaction plans have been suggested during the FGD that involved the local people and some institutionsrelevant to the case of Gunung Wingko, and have to be done as soon as possible to prevent the sitefrom further damage. Te plans comprise dissemination of the site values, the establishment of thesite as cultural heritage (Cagar Budaya), site management, and the development of a site informationcenter. Tis center could be integrated with other tourist destinations which have been establishedaround the site. In this case, local people should be involved in preparing material displayed in theGunung Wingko Site Information Center.

scholarly journals Quantifying the Third-Party Loss in Building Construction Sites Utilizing Claims Payouts: A Case Study in South Korea

2020 ◽  
Vol 12 (23) ◽  
pp. 10153
Author(s):  
Ji-Myong Kim ◽  
Kag-Cheon Ha ◽  
Sungjin Ahn ◽  
Seunghyun Son ◽  
Kiyoung Son
Keyword(s):  
Construction Management ◽  
Construction Projects ◽  
Building Construction ◽  
Assessment Model ◽  
Third Party ◽  
Sustainable Construction ◽  
Loss Assessment ◽  
Construction Sites ◽  
The Third ◽  
The Third Party

This study aims to quantify the losses to third-parties on construction sites by determining the loss indicators and identifying the relationship between the losses and the indicators to improve the sustainability on building construction sites. The growing size and intricacy of recent construction projects have resulted in the growth of losses, both in quantity and frequency. Notably, third-party losses are rapidly increasing owing to the urbanization of the environment and increases in construction scale. Therefore, for efficient and sustainable construction management, a financial loss assessment model is essential to mitigate and manage such loss. This study uses the third-party losses on construction sites obtained from a major South Korean insurance company to describe the difference from the material losses and to disclose the loss indicators based on actual economic losses. ANOVA analysis and multiple regression analysis are adopted to identify the variance and define the loss indicators and to make prediction models, respectively. Several groups of loss indicators are investigated, including construction information and the occurrence of natural disasters. The findings and results of this research afford an essential guide to sustainable construction management, and they can serve as a first stage loss assessment model for construction projects.

scholarly journals Causes of construction delay from contractors and suppliers in Thailand's oil and gas platform projects

2018 ◽  
Vol 192 ◽  
pp. 02008
Author(s):  
Pittayaporn Gomarn ◽  
Jakrapong Pongpeng
Keyword(s):  
Construction Projects ◽  
Oil And Gas ◽  
Site Management ◽  
Planning And Scheduling ◽  
Confirmatory Factor ◽  
Low Efficiency ◽  
Communication And Coordination ◽  
Poor Site ◽  
Procurement System ◽  
Price Escalation

Construction project delays caused by contractors and suppliers are the top problems in Thailand's oil and gas industries. Recognizing this importance and their relationships between factors can help reduce the risk of delays in construction projects. Therefore, this study set out to confirm factors and inspect relationships between delay factors of contractors and suppliers. A 16 item questionnaire survey was distributed to 134 managers, engineers, and supervisors in oil and gas platform construction projects in Thailand. A confirmatory factor analysis (CFA) was performed by the use of Amos Version 20 software program. The analysis results showed that delays caused by the contractors and suppliers had high relationships, due to high regression weighs. The delays caused by the contractors included seven factors which included poor site management and supervision (17%), lack of safety rules and regulations (16%), poor communication and coordination with others (15%), poor procurement system management (15%), defective components and mistakes during construction (14%), supplier payments lateness (13%), and poor planning and scheduling (10%). The delays caused by the suppliers included six factors which included the supply of unqualified and unskilled personnel (22%), supply of low efficiency equipment (20%), late delivery of materials and equipment (20%), supply of low quality materials (16%), late supply of workers (16%), and price escalation (5%).

Causes of delays on construction projects: a comprehensive list

2019 ◽  
Vol 13 (1) ◽  
pp. 20-46 ◽  
Author(s):  
Serdar Durdyev ◽  
M. Reza Hosseini
Keyword(s):  
Construction Projects ◽  
Research Output ◽  
Site Management ◽  
Content Type ◽  
Climate Conditions ◽  
Control Factors ◽  
Number Of Publications ◽  
Poor Site ◽  
Causes Of Delays ◽  
Insight Into

Purpose The purpose of this paper is to present a systematic review of studies on CPD published between 1985 and 2018. Design/methodology/approach Before identifying common CPD, research trends were examined in terms of the number of publications in selected journals, as well as the contributions made by countries, institutions and researchers. Findings The findings reveal that researchers from developing countries have contributed the most to identifying the causes of CPD. A total of 149 causes of CPD were identified in a thorough review of 97 selected studies. Weather/climate conditions, poor communication, lack of coordination and conflicts between stakeholders, ineffective or improper planning, material shortages, financial problems, payment delays, equipment/plant shortage, lack of experience/qualification/competence among project stakeholders, labour shortages and poor site management were identified as the ten most common CPDs. Originality/value Being the first study of its type, this study provides insight into the research output related to this area and identifies a common set of CPDs, which may provide a better understanding of the key areas requiring attention where steps should be taken to minimise or control factors causing delays in construction projects.

scholarly journals Knowledge, beliefs and attitudes of community health workers about hypertension in the Cape Peninsula, South Africa

Curationis ◽  
2004 ◽  
Vol 27 (1) ◽  
Author(s):  
M.J. Sengwana ◽  
T. Puoane
Keyword(s):  
Risk Factors ◽  
South Africa ◽  
Health Promotion ◽  
Focus Group ◽  
Community Health ◽  
Health Workers ◽  
Focus Group Discussions ◽  
Group Discussions ◽  
Cape Peninsula ◽  
Beliefs And Attitudes

This article explores the perceptions and attitudes of community health workers (CHWs) about hypertension. The level of knowledge of hypertension, as well as their personal attitude towards this is crucial in the style and quality of their interventions. CHWs, whose role in health promotion is being increasingly recognised, can help contain or reduce the prevalence of hypertension by influencing the community to adopt healthy lifestyles. Forty-three CHWs employed by Zanempilo in two study areas, Sites B and C in Khayelitsha in the Cape Peninsula, South Africa, were included in the study. Firstly, focus group discussions were conducted with 17 purposively selected CHWs to explore attitudes, beliefs and perceptions of hypertension. Secondly, interviews were conducted to assess their basic knowledge about causes, prevention and control of hypertension. The focus group discussions revealed that CHWs were uncertain about the causes of hypertension. They also found it difficult to grasp the fact that people without risk factors, such as overweight or a family history of hypertension, could be hypertensive. Many CHWs believe in traditional medicines and home-brewed beer as the best treatment for hypertension. They believe that people who take medical treatment become sicker and that their health deteriorates rapidly. Risk factors of hypertension mentioned during the structured interviews include inheritance, lack of physical activity, consuming lots of salty and fatty food. Conclusions drawn from the findings of the CHWs’ responses highlighted their insufficient knowledge about hypertension as a chronic disease of lifestyle. Meanwhile they are expected to play a role in stimulating community residents’ interest in the broad principle of preventive health maintenance and follow-up. Data obtained from this research can be used for the planning of health-promotion programmes. These should include preventing hypertension and improving primary management of individual sufferers. Because of their working relations and close link with CHWs, community nurses in primary health-care facilities need to recognise these beliefs and attitudes since these may differ from their own.

scholarly journals Social Anxiety among Chinese People

2015 ◽  
Vol 2015 ◽  
pp. 1-12 ◽  
Author(s):  
Qianqian Fan ◽  
Weining C. Chang
Keyword(s):  
Risk Factors ◽  
Factor Analysis ◽  
Social Anxiety ◽  
Behavioral Inhibition ◽  
Assessment Tool ◽  
Chinese People ◽  
Focus Group Discussions ◽  
Group Discussions ◽  
Qualitative And Quantitative ◽  
Attachment Parenting

The experience of social anxiety has largely been investigated among Western populations; much less is known about social anxiety in other cultures. Unlike the Western culture, the Chinese emphasize interdependence and harmony with social others. In addition, it is unclear if Western constructed instruments adequately capture culturally conditioned conceptualizations and manifestations of social anxiety that might be specific to the Chinese. The present study employed a sequence of qualitative and quantitative approaches to examine the assessment of social anxiety among the Chinese people. Interviews and focus group discussions with Chinese participants revealed that some items containing the experience of social anxiety among the Chinese are not present in existing Western measures. Factor analysis was employed to examine the factor structure of the more comprehensive scale. This approach revealed an “other concerned anxiety” factor that appears to be specific to the Chinese. Subsequent analysis found that the new factor—other concerned anxiety—functioned the same as other social anxiety factors in their association with risk factors of social anxiety, such as attachment, parenting, behavioral inhibition/activation, and attitude toward group. The implications of these findings for a more culturally sensitive assessment tool of social anxiety among the Chinese were discussed.

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