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All Journal Civil and Sustainable Urban Engineering CSID Journal of Infrastructure Development
Eze, Emmanuel
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Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Social Sciences Transportation

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Inhibitors to Earth-based Materials Adoption in Urban Housing Construction: The View of Design Experts Nwaki, William; Sofolahan, Onyinye; Eze, Emmanuel
Civil and Sustainable Urban Engineering Volume 3 - Issue 2 - 2023
Publisher : Tecno Scientifica Publishing & Society of Tropical Science and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53623/csue.v3i2.329

Abstract

Earth-based materials are eco-friendly and harmless to the environment but have been neglected and relegated, and preference is given to non-sustainable and expensive conventional materials owing to certain factors. Existing studies in the Nigerian context did not consider the factors hindering the use of earthen materials in urban low-cost housing production. This study presents the outcome of examining the inhibitors to the adoption of earth-based materials in urban housing construction from the perspective of design experts in a developing country like Nigeria. Thus, it fills the critical literature gap in the Nigerian context. A well-structured quantitative questionnaire was utilised to collect data from construction design experts using the snowball sampling technique via electronic means. With a reliability index of 0.899, The gathered data were analysed using frequencies, percentages, Mean score, normalisation value technique, Mann-Whitney U test, overlap analysis, and exploratory factor analysis (EFA). It was found that the major barriers to the use of earth materials in urban housing production are (i) image and aesthetic barriers, (ii) Knowledge and resistance barriers, (iii) technology and data barriers, (iv) strength and maintenance barriers, and (v) demand and demographic barriers. More training and workshops were advocated to increase knowledge of the environmental and economic benefits of these materials among stakeholders to influence their interest and the market for earthen materials' acceptability and usage in housing production in urban areas.
Health and Safety Management on Construction Projects: The View of Construction Tradespeople Eze, Emmanuel; Sofolahan, Onyinye; Siunoje, Lawrence
CSID Journal of Infrastructure Development Vol. 3, No. 2
Publisher : UI Scholars Hub

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Abstract

The complex networks of activities of construction projects have made the construction environment unfriendly and unsafe for the construction tradespeople. Tradespeople play a key role in construction project delivery and are the major victims of accidents that affect negatively on project performance. This study assessed the perception of construction tradespeople on the health and safety management on the construction site. The study objectives are; to determine the trade with the highest accident exposure level, to ascertain the types of accidents and level of occurrence, to determine the major causes of accidents on construction sites, and to examine the possible measures for preventing accidents on construction sites. A well-structured questionnaire and stratified purposive sampling technique were adopted in gathering data from the participants in Abuja, Nigeria. With a reliability index of at least 0.80, the gathered data were analysed using frequencies, percentiles, mean analytics, Kruskal-Wallis test, and Mann-Whitney U tests. The study found that Concreters/Mason/Bricklayers, Carpenters, and Steel benders/fixers/welders are the most vulnerable trades groups to hazards and accidents on construction sites. Fall-related, Slip and trip, and contact with objects (struck by objects) are the most occurring accident types. The most critical causes of accidents based on tradespeople perception are; inadequate training, drugs and alcohol, horseplay by workers, excessive working hours resulting in mental fatigue, and communication issues. The most important measures for preventing accidents on construction sites are; rewards and penalties for defaulters, the use of personal protective equipment, effective communication system on-site, correct placement of ladder through proper supervision, and site discipline among workers. The study concludes that there is a low level of implementation of health and safety management practices on construction projects site by construction organisations. Rewards for safety compliances and penalties for HS deviant workers should be put in place by the management of construction sites.
Major Barriers Assessment of Lean Construction Application in Construction Projects Delivery Nwaki, Wiliam; Eze, Emmanuel; Awodele, Imoleayo
CSID Journal of Infrastructure Development Vol. 4, No. 1
Publisher : UI Scholars Hub

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Abstract

The construction sector is facing challenges of meeting client’s value and end-user satisfaction, and this situation is worsened by customers’ dynamic demands for quality and speedy delivery without loss of value. Lean concept has been advocated to be a panacea to poor project performance, and it, however, has a high awareness level but with little implementation among construction organizations especially in developing countries including Nigeria. The purpose of this study is to assess the major barriers to lean construction application on construction project delivery, to suggest possible measures for overcoming them. A well-structured questionnaire was used to gather data from construction professionals in the south-south, Nigeria using electronic means and snowball sampling technique. Data gathered were analyzed using frequency, percentage and factor analysis. It was found that the major cluster of barriers to lean implementation are technology and knowledge barrier, leadership and management barrier, culture and complexity barrier, engagement and relationship barriers, financial barriers, and communication barriers. It was recommended that adequate management and leadership support is needed for entrenching lean construction techniques into the culture of operations of construction organisations.
Co-Authors Awodele, Imoleayo Nwaki, Wiliam Nwaki, William Siunoje, Lawrence SOFOLAHAN, Onyinye SOFOLAHAN, Onyinye