Health and Safety Risks Associated with Construction of Skyscrapers in Nairobi City County, Kenya

dc.contributor.authorOgaso, Peter O.
dc.date.accessioned2026-04-28T10:12:50Z
dc.date.available2026-04-28T10:12:50Z
dc.date.issued2025-11
dc.descriptionA Thesis Submitted in Fulfilment of the Requirements for the Award of the Degree of Master of Science (Occupational Safety and Health) in the School of Health Sciences of Kenyatta University, November 2025. Supervisors 1. Dr. Jackim Nyamari 2. Eng. Dr. Fidelis Kilonzo (Ph.D.)
dc.description.abstractSkyscrapers are key components of development in a city or town. Since land in Nairobi's central business district and its environs is a very valuable commodity, skyscrapers respond to the need to maximize income that can be derived from a given piece of land in prime locations, leading to an increase in skyscrapers. Health1 and risks in construction1 of skyscrapers in1 Kenya is1 an issue1 of interest to the The1 practitioners, 1 industrialists, consumers, and1 the1 government. A literature review on health and safety in construction reveals that limited information is documented on health and safety risks associated with skyscraper construction in Nairobi. determine health and safety risks associated with objectives of1 and1 this study1 were to1 the construction of skyscrapers, determine the factors influencing the implementation1of health1and safety measures, and lastly to assess the health management and11 control strategies employed in the construction of safety risk1 skyscrapers1 used1 in Nairobi1 City1 County. A descriptive cross-sectional study design was utilized, in which five skyscrapers under construction at various stages in Nairobi City County were purposively selected. A total sample size of 265 respondents from a sampling frame of 790 skyscraper construction workers. Proportionate1 sampling1 was to sample a specific number of respondents11in the five skyscrapers under construction. Semi—structured questionnaires administered through the Open Data Kit platform were used for data collection. The data were analyzed using Stata version 17, and frequencies and percentages were used to describe the data. Ordinal logistic regression was used to identify the predictors. Results show that Unsafe handling of machinery and equipment, and of electricity, were the likely health and safety risk factors during the construction of skyscrapers. A significant proportion of respondents in the survey reported unlikely occurrences of multiple types of risk factors, such as falling objects, failure to use PPE, working at height, falling from a height, and unprotected edges. Health and safety risk occurrence was statistically associated with gender (Fisher's exact p=0.008) and age (Fisher's exact p=0.004). The study established that pressure from clients was the primary reason for implementing health and safety measures in the construction of skyscrapers, while reducing accidents was the least important. Reducing accident occurrence was the least likely factor workers considered when accounting for factors determining health and safety measures. The study concluded that 77.7% of risk management strategies were appropriately implemented, while 22.3% were not in the skyscrapers under construction. Finally, to ensure risk management and control strategies are fully employed, the study recommended that regular safety inspections and audits be conducted on skyscraper construction sites to reduce the health and safety burden.
dc.identifier.urihttps://ir-library.ku.ac.ke/handle/123456789/32983
dc.language.isoen
dc.publisherKenyatta University
dc.titleHealth and Safety Risks Associated with Construction of Skyscrapers in Nairobi City County, Kenya
dc.typeThesis
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