Browsing by Author "Ranti, Taibat ADEBIYI"
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Item AN ASSESSMENT OF THE EFFECTIVENESS OF HEALTH AND SAFETY COMMUNICATION STRATEGIES IN THE CONSTRUCTION INDUSTRY(The Department of Architecture, Ahmadu Bello University Zaria-Nigera, 2017) Ranti, Taibat ADEBIYI; Olubola, Babalola; Amuda-Yusuf, GaniyuAccidents and injuries are growing problems on construction sites in Nigeria as well as in many other countries. The occurrence of accidents on construction sites usually leads to site closure for accident investigation, loss of man/machine hours, loss of output, loss of corporate reputation, payment of burial expenses/compensation/insurance claims for the dead. Previous studies suggested poor communication of Health and Safety (H&S) information among site personnel as one of the major causes of accidents on construction sites. These previous studies have made little headway in identifying the best strategy for effective communication of health and safety information between contractors and on-site personnel. Therefore this study will identify and assess the communication strategy used on construction sites in Lagos State. Lagos State was chosen as the study area because 60 - 65 of head offices of contracting organizations were located in this area. In addition, the study area is very active in terms of project/construction activities. A total of one hundred and forty-five (145) questionnaires were administered on contractors and site workers through convenience and snowballing sampling. A total of sixty¬eight (68) properly completed questionnaires were analyzed resulting in an effective response rate of 47. The mean score of each item was adopted to rank them in order of importance. The results of the study revealed that only nine (9) out of sixteen (16) communication strategies identified are actually important. The most significant five (5) strategies in order of importance are: training workshop,' project briefing,' safety induction,' operating procedures and posters. It is recommended that the significant strategies identified from this study can be used to communicate H&S information on construction sites thereby reducing accidents on sites.Item Evaluation of Risk Factors Impacting Cost and Time Performance of Mechanical and Electrical Services Installation in North Central Nigeria(Faculty of Environmental Design and Management, 2017) Amuda Yusuf, Ganiyu; Ranti, Taibat ADEBIYI; Theophilus Oluwarotimi, Olatunde OLOWA; Ibrahim, Babatunde OLADAPO; Lukman, Olarewaju OLORUNOJE; Soliu, IDRISMechanical and Electrical (M&E) services project are complex in nature and a number of risk arises at the design and installation stages resulting into poor cost and time performance. This paper identified and ranked the risk factors affecting cost and time performance of M&E services projects. Thirty risk factors identified from preliminary investigations were adopted as basis for a questionnaire survey to architects, engineers, quantity surveyors and project managers in North Central Nigeria. Initial statistical analysis produced 23 risks factors that would affect cost and time performance of M&E services projects and analysis of variance results show that no significant difference exists among the opinions of the professionals surveyed on the 7 risk factors. Factor analysis was adopted to classify the risk factors into five principal components namely, pre-contract risks, post contract risks, clients' related risks, procurement and external risks. The risk identification and ranking are good tools for assessment of risks related to M&E services projects. In addition, the classification of the risk factors can be used to establish important risk factors that require the attention of project participants. This will allow the client and contractor to understand the high-risk areas in M&E services projects and assign responsibility for those risks to the party or parties best situated to control them.Item PROMOTING SUSTAINABLE WASTE MANAGEMENT ON CONSTRUCTION SITES IN NIGERIA(The Department of Architecture, Ahmadu Bello University Zaria-Nigera, 2017) Ranti, Taibat ADEBIYI; Abdullateef, Iyanda BAKO; Yusuf Ganiyu, AMUDAConstruction activities generate an enormous amount of material waste and it is therefore essential that waste management is given due consideration. The problem of material wastage on construction sites is not only uneconomical but also an environmental concern. This paper addressed the study of materials waste generation on construction sites in Kwara state, Nigeria. Causes and wastage levels of construction materials were identified and investigated. The target population comprises contacting organizations. Primary data was obtained using structured questionnaires, interviews and site visits. Respondents were requested to rate the 25 variables identified from literature review. A total of sixty-five (65) questionnaires were returned and found useful out of one hundred and twenty (J 20) questionnaires that were administered to contractors and site operatives amounts to a return rate of 54.17. The relative contribution index method (RCI) was used to analyze the respondents' perceptions of the level of contributions of the identified factors to material waste generation on sites. The research analyses revealed that incorrect estimated quantity is the highest contributor to waste generation with RCI of O. 765. Wrong handling of material is adjudged the second with RCI of 0.743. Inadequate supervision, impossibility to order small quantities and waste from uneconomical shapes are ascribed the third, fourth andfifthfactors with RCI ofO. 728, 0.713 and O. 708 respectively. The findings revealed that there was no significant difference between the perceptions of contractors and site operatives and there was no location effect in the level of contribution of the assessed factors to material waste generation as perceived by the respondents from different locality with a p-value of 0.469 with all the factors being scored with relative contribution index greater than 0.600. In view of the findings, this study recommends that contractors and other stakeholders on construction sites should jointly consider the use of waste minimization strategies by purchasing exact quantities of materials required. Trained personnel for monitoring and supervising the flow and handling of materials should be employed on every construction sites.