{"title":"公路基础设施工程承包商安全记录评价及其对工程绩效的影响","authors":"James Mushori, C. Rambo, C. Wafula, Johnson Matu","doi":"10.4236/WJET.2021.92015","DOIUrl":null,"url":null,"abstract":"A number of studies conducted in Kenya and internationally indicated that most of the construction firms and contractors do not seem to strictly observe safety administration in construction industry, hence compromised performance at implementation stage of projects and even later in the post implementation or post-delivery stage. The study aimed to examine the influence of contractors’ safety record on road performance. This is to create better understanding of how the safety record of contractors could either positively or negatively influence performance of roads during post-delivery stage. The study used both descriptive survey research design and correlation design based on a pragmatic mixed method approach. Through stratified sampling and proportionate sampling, a sample of 210 was drawn from a population of 460 comprising of registered contractors and Public Service Vehicles (PSV) drivers within Nairobi County in Kenya. Questionnaires were distributed using simple random sampling. The questionnaires returned were 153 in total representing 72.8% of all questionnaires distributed to the respondents. Data was descriptively analyzed using percentages, frequencies, means and standard deviations for measuring central tendency and variability. Inferential analysis was done by use of correlation and regression. The descriptive analysis revealed that safety policy management system, insurance policy, and adequacy of standards in addressing safety outcome are to some extent practiced and adhered to. However, compliance behavior to safety procedures is still weak and requires improvement. The null hypothesis was tested and the results obtained from a simple linear regression indicated that, R = 0.657, R2 = 0.431, B = 0.359, t = 10.703, F (1,151) = 114.558, p = 0.000 < 0.05. This means that contractors’ safety record has a strong positive and significant relationship with road performance and that 43.1% of variation in performance is explained by safety record. This study recommends that contractors’ safety record should be part, and parcel of the evaluation criteria used in selection of a suitable road contractor to ensure road performance is achieved even after construction is completed. The study is significant in that it contributes to the body of knowledge by providing empirical data on the need for safety procedures in urban road construction and beyond.","PeriodicalId":344331,"journal":{"name":"World Journal of Engineering and Technology","volume":"16 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Evaluating Contractors’ Safety Record and Its Influence on Performance of Road Infrastructural Projects\",\"authors\":\"James Mushori, C. Rambo, C. 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引用次数: 1
摘要
在肯尼亚和国际上进行的一些研究表明,大多数建筑公司和承包商似乎没有严格遵守建筑业的安全管理,因此在项目的执行阶段,甚至在执行后或交付后阶段的业绩受到损害。本研究旨在检验承包商的安全记录对道路性能的影响。这是为了更好地了解承包商的安全记录如何在交付后阶段对道路的性能产生积极或消极的影响。本研究采用描述性调查研究设计和基于语用混合方法的相关设计。通过分层抽样和比例抽样,从肯尼亚内罗毕县460名登记承包商和公共服务车辆司机中抽取了210名样本。问卷采用简单随机抽样的方式发放。回收的问卷共153份,占已派发问卷总数的72.8%。使用百分比、频率、平均值和标准偏差对数据进行描述性分析,以测量集中趋势和变异性。采用相关性和回归分析方法进行推理分析。描述性分析表明,安全政策、管理体系、保险政策和处理安全结果的标准的充分性在一定程度上得到了实践和遵守。然而,对安全程序的遵守行为仍然薄弱,需要改进。对原假设进行检验,简单线性回归结果显示,R = 0.657, R2 = 0.431, B = 0.359, t = 10.703, F (1,151) = 114.558, p = 0.000 < 0.05。这意味着承包商的安全记录与道路性能有很强的正相关关系,并且43.1%的性能变化可以用安全记录来解释。本研究建议,在选择合适的道路承包商时,承包商的安全记录应作为评估标准的一部分,以确保即使在施工完成后也能达到道路性能。该研究的重要之处在于,它通过提供有关城市道路建设及其他领域安全程序需求的经验数据,为知识体系做出了贡献。
Evaluating Contractors’ Safety Record and Its Influence on Performance of Road Infrastructural Projects
A number of studies conducted in Kenya and internationally indicated that most of the construction firms and contractors do not seem to strictly observe safety administration in construction industry, hence compromised performance at implementation stage of projects and even later in the post implementation or post-delivery stage. The study aimed to examine the influence of contractors’ safety record on road performance. This is to create better understanding of how the safety record of contractors could either positively or negatively influence performance of roads during post-delivery stage. The study used both descriptive survey research design and correlation design based on a pragmatic mixed method approach. Through stratified sampling and proportionate sampling, a sample of 210 was drawn from a population of 460 comprising of registered contractors and Public Service Vehicles (PSV) drivers within Nairobi County in Kenya. Questionnaires were distributed using simple random sampling. The questionnaires returned were 153 in total representing 72.8% of all questionnaires distributed to the respondents. Data was descriptively analyzed using percentages, frequencies, means and standard deviations for measuring central tendency and variability. Inferential analysis was done by use of correlation and regression. The descriptive analysis revealed that safety policy management system, insurance policy, and adequacy of standards in addressing safety outcome are to some extent practiced and adhered to. However, compliance behavior to safety procedures is still weak and requires improvement. The null hypothesis was tested and the results obtained from a simple linear regression indicated that, R = 0.657, R2 = 0.431, B = 0.359, t = 10.703, F (1,151) = 114.558, p = 0.000 < 0.05. This means that contractors’ safety record has a strong positive and significant relationship with road performance and that 43.1% of variation in performance is explained by safety record. This study recommends that contractors’ safety record should be part, and parcel of the evaluation criteria used in selection of a suitable road contractor to ensure road performance is achieved even after construction is completed. The study is significant in that it contributes to the body of knowledge by providing empirical data on the need for safety procedures in urban road construction and beyond.