Despite the numerous implications of non-compliance with safety practices in construction projects, there are still reports of a low level of compliance with safety rules on construction sites. The study seeks to investigate the awareness level on the implications of non-compliance with safety practices among professionals in construction projects. From the existing literature, two major types of implications namely; direct and indirect cost implications of non-compliance with safety rule were investigated. Questionnaires were used to elicit information from respondents. A hypothesis that examines the differences in the level of awareness on the implications of non-compliance with safety practices among construction professionals was postulated. Kruskal-Wallis test was used to test the hypothesis. The findings show that the awareness level on the implications of non-compliance with safety practice among each professional is high and that there are significant differences in the level of awareness on six implications of non-compliance with safety practices; ‘physical injury/fatality to persons’, ‘workmen’s compensation’, ‘liability insurance premiums, ‘low morale of supervisors and workers’, ‘costs of delay’ and ‘time of cost’. The study concludes that professionals are aware of the implications of non-compliance with safety practices and their professional background affects the awareness level of six of the implications of non-compliance with safety practices. The study contributes to knowledge by identifying the six implications of non-compliance with safety practices where disparity exists in the awareness level among construction professionals. In cases where disparity exists in the awareness level among professionals, construction firms should adopt group discussion as a means of sensitization to increase awareness levels.
Diverse causes of accidents abound on construction sites and these have negative impacts on the construction process. These negative impacts are enormous, leading to non-sustainable construction. However, achieving sustainable construction requires reduction in the occurrence rate of accidents. The aim of this study is to investigate the occurrence rate of accident types on construction site. Accident types were majorly categorised into four namely, earth moving machinery, electrocution, construction fall, and others. From the positivist research paradigm and adopting cross-sectional survey research design, questionnaires were used to elicit information from personnel on construction sites. The mean of the occurrence rate of accidents was calculated. Findings show that construction site fall has high occurrence rate while earth moving machinery, electrocution and others have moderate rate of occurrence. The study concludes that the most frequently occurring type of accidents on construction site is construction fall.
Managing the production costs of construction projects is crucial especially in the aspect of material management. The use of lightweight materials reduces the dead load in structures, thus the reduction in the use of reinforcement and concrete in the foundation. To this end, this study examined the effect of synthetic foam on the properties of stabilized lateritic brick with a view to producing lightweight stabilized laterite brick for use on weak soils with low bearing capacity. Laboratory tests were conducted on the bricks produced to determine the density, compressive strength, and water absorption properties at 7, 14, 21, and 28 days. Preformed foam using synthetic foaming agent was used at 0%, 25%, 50%, 75% and 100% to replace the water in the experiment. One hundred twenty samples of stabilized foamed lateritic bricks were produced at a mixed ratio of 1:4 (cement: laterite) using a 0.6 water/cement ratio. The result showed that the bricks at all percentages of foam content meet up with the minimum requirement of compressive strength of 1.6N/mm2, 2.0N/mm2 and 3.5N/mm2 recommended by the Nigerian Building code, Nigerian Building and Road Research Institute, and the third class brick of the BS 3921:1985 respectively. The water absorption is within the limits of bricks specified in standards as 15%. The highest compressive strength was recorded at 25% foam inclusion (4.839N/mm2) on 28th day hence concluding that foaming agent stabilizes the characteristics strength of laterite bricks and also reduces its density.
Diverse causes of accidents abound on construction sites, which lead to complexity and difficulty in understanding the key causes of accidents on construction sites. The effect is the increasing rate of accidents. Thus, grouping and identifying the key dimensional and sub causes of accidents is important. However, there is a dearth of research on the dimensionality and indicators of causal factors of accidents on construction sites. This paper aims to create an avenue for easy identification and understanding of the causes of accidents through the development of key indicators and dimensional causes of accidents on construction sites. Adopting a cross-sectional survey research design, three hundred questionnaires were purposely distributed to construction workers who have had experience or witness accidents on a construction sites. Two hundred questionnaires were retrieved and used for analysis representing a 67% response rate. An exploratory factor analysis was used to group and find the significant causal factors from the 64 factors identified in the literature. From the analysis, five key dimensional causes with 22 indicators were identified namely; personal and work factors, design factors, behavioural factors, proximate factors and attitudinal factors. The key indicators identified among others are non-use of PPE, lack of experience, working in confined spaces, disobedience to work discipline and innovative technology. To reduce the occurrence level of accidents, site managers should place the key indicators and dimensional causal factors of accidents on the signboard for easy identification and understanding and as a training guide on construction sites
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