https://www.ajol.info/index.php/actas/issue/feed Acta Structilia 2022-09-01T08:34:44+00:00 Prof. Kahilo Kajimo-Shakantu KajimoShakantuK@ufs.ac.za Open Journal Systems <p><em>Acta Structilia</em><strong> </strong><em>Journal </em>is a South African accredited national journal for independently adjudicated research articles on any topic in the field of the physical and development sciences<strong> </strong>on subjects in any applicable field of scholarship, i.e. architecture, urban and regional planning, quantity surveying, construction management and project management, building economy, engineering and property or community development.</p><p> </p> https://www.ajol.info/index.php/actas/article/view/231025 The effect of management control on labour productivity of labour intensive works in Ghana 2022-09-01T08:27:48+00:00 Emmanuel Bamfo-Agyei emmanuel.bamfo-agyei@cctu.edu.gh Didibhuku Wellington Thwala thwaladw@unisa.ac.za Clinton Aigbavboa caigbavboa@uj.ac.za <p>In Ghana, many construction projects end in dispute, because contractors are unable to meet the completion time. As many construction operations are labour intensive, the question of labour productivity becomes paramount, especially as higher productivity levels usually translate into superior profitability, competitiveness, and income. This article aims to examine the management control factors affecting construction labour productivity in Ghanaian construction firms. It assesses the measuring techniques that are used to improve labour productivity in the construction firms. The article also determines the relationship between management control and labour productivity on labour-intensive works in Ghanaian construction firms. The study adopted a quantitative research design that used a questionnaire-based descriptive survey. Records available at the Ghana Social Opportunity Project (GSOP) indicate that 920 professionals are involved in labour-intensive works on road infrastructure. A purposive sampling technique was used to select 40 districts involved in road construction projects; 560 respondents were considered for the study. The summary of the data consisted of means, standard deviations, percentages, cross-tabulations, and frequencies. Principal axis factor analysis revealed three (3) components with eigenvalues above 1 that may influence labour productivity of labour-intensive works on road construction. These components are effective communication, supervision technique, and design inadequacies. Construction managers must monitor workforce performance by ensuring that the three factors influencing management control are considered.&nbsp;</p> 2022-09-01T00:00:00+00:00 Copyright (c) https://www.ajol.info/index.php/actas/article/view/231026 Evaluation of the organisational capability of the public sector for the implementation of building information modelling on construction projects 2022-09-01T08:01:50+00:00 Anthony Yusuf anthonyoyusuf@yahoo.com Akintayo Opawole tayoappmail@gmail.com Esther Ebunoluwa owoyemi_esther@yahoo.com <p>Organisations are required to possess certain capabilities in order to implement Building Information Modelling (BIM), one of the emerging technologies for overcoming the problem of fragmentation in the construction industry. This study examines the organisational capability attributes required for the implementation of BIM in construction projects, with a view to enhancing the performance of public sector projects. The study adopted a quantitative descriptive analysis based on primary data obtained from public sector organisations in Lagos State, Southwestern Nigeria. One hundred and ninetyeight (198) valid questionnaires, obtained from construction professionals within the organisations, provided quantitative data for the assessment. Data collected were analysed, using both descriptive and inferential statistics. The findings indicate that public sector organisations possess the capability attributes for BIM implementation in building projects at different levels of availability (LAv) and adequacy (LAq), with adequate power supply rated at (LAv = 76.00%; LAq = 75.80%); speedy internet connection (LAv = 70.20%; LAq = 69.80%); change from traditional workflow (LAv = 69.80%; LAq = 64.60%); adequate work environment for workers (LAv = 69.60%; LAq = 64.40%); standardised process (LAv = 66.00%; LAq = 63.40%); sufficient number of workers (LAv = 65.60%) and datasharing skills (LAv = 65.00%); standardised process (LAq = 63.40%), and collaborative team culture (LAq = 63.00%). The study established that the organisational capability attributes with high availability rating also have high adequacy rating. The research concludes that the general organisational capability attributes of the public sector for BIM on construction projects are not yet sufficiently developed and thus suggests the need to strengthen specific capability attributes that are required to implement BIM.</p> 2022-09-01T00:00:00+00:00 Copyright (c) https://www.ajol.info/index.php/actas/article/view/231029 Perceptions of safety behavior modifying techniques in construction firms: insights from Lagos, Nigeria 2022-09-01T08:33:16+00:00 Oluwaseun Afuye oluwaseunafuye08@gmail.com Omotayo Aina tayoaina@yahoo.com Olubimbola Oladimeji olubimbolaolubimbola@gmail.com Tanko Mohammed engineertanko@gmail.com <p>Unsafe behaviour is a major contributing factor to accidents on construction sites. Measures must be taken to instil safety behaviour in construction workers, in order to reposition the industry for greater safety and performance on construction sites. The article examined the safety behaviour-modifying technique (SBMT) adopted by construction firms in Lagos State with a view to increasing the likelihood of safe acts of workers in the study area. To achieve this aim, four major grouped components of SBMT (goals, training, feedback, and incentive) were identified consisting of 24 variables obtained from the literature. The literature informed the structured questionnaire that was administered to 106 representatives of construction firms within Lagos<br>State. The SBMT positions within construction firms were ranked, using the mean score (MS), and independent t-test was employed to compare the techniques used within the firms. The results of the analysis revealed that the safety training component was the most widely used SBMT in both large and medium-sized businesses. It was also observed that construction firms pay less attention to feedback on safety performance and to providing incentives to personnel who carried out their work in a noted safe manner. The study recommended that, in addition to consistent safety training provided to workers, construction firms should set realistic and achievable safety goals, provide workers’ safety feedback, and reward workers for safety behaviour on construction sites. This practice may reduce the rates of accidents and injuries on construction sites, leading to a safer construction industry with less work-place fatalities.&nbsp;</p> 2022-09-01T00:00:00+00:00 Copyright (c) https://www.ajol.info/index.php/actas/article/view/231030 Appropriate building repair and maintenance strategies using multicriteria decision-making analysis – a Delphi study 2022-09-01T08:02:54+00:00 Mohammad Kheradranjbar Kherad.ranjbar@kiau.ac.ir Mirali Mohammadi m.mohammadi@urmia.ac.ir Shahin Rafiee shahinrafiee@ut.ac.ir <p>As an influential and significant factor in improving the service of building components and elements, maintenance plays an essential role in maintaining reliability, availability, and quality, as well as increasing efficiency and security. Therefore, how to define this maintenance system and determine the appropriate criteria and strategies for that play an important role in the cost and longevity of the buildings after construction and during their operation. The purpose of the article is to determine the effective criteria for evaluating buildings based on maintenance and repair (R&amp;M) and finally determining the appropriate strategy for the maintenance of residential buildings, using multicriteria decision-making methods. These criteria were first identified by reviewing the literature and using the Delphi method to obtain the opinions of maintenance experts. The criteria were then prioritized, based on the SWARA method, and the results were compared and evaluated. Based on comparison, safety, health, environment, and proper utilisation were rated the top four criteria to consider for building R&amp;M. Finally, using the VIKOR2 method, it was found that the breakdown maintenance (BM) and corrective maintenance (CM) strategies are the best strategies to use for the R&amp;M of residential buildings.</p> 2022-09-01T00:00:00+00:00 Copyright (c) https://www.ajol.info/index.php/actas/article/view/231031 Sustainability awareness and practices in the Zambian construction industry 2022-09-01T08:34:44+00:00 Sambo Zulu s.zulu@leedsbeckett.ac.uk Ephraim Zulu ephraimzulu2000@yahoo.co.uk Mwansa Chabala chabalam1@cbu.ac.zm <p>The construction industry makes a significant contribution to the global green-house gas emission. It is, therefore, critical that construction industry professionals should be aware of and practise sustainable construction. However, there is a paucity of studies on the awareness of sustainability and their practices in developing countries, with some results seemingly contradicting. This article explored the awareness and practices of sustainability in the Zambian construction industry. Data was collected from construction industry professionals through a questionnaire survey and a total of 112 responses were received. The relative importance index (RII) and a series of linear regression analyses were used to analyse the data. The participants’ perception of sustainability was primarily enviro-centric as opposed to the economic or social context. However, social and economic sustainability practices ranked highest, while environmental sustainability practices ranked in the bottom five of the 16 practices. While the participants perceived the environmental context as more critical in their understanding of sustainability, their practice reflected a focus on the social and economic sustainability context. The findings imply that merely increasing the level of knowledge and awareness of environmental sustainability may not lead to gross improvements in environmental sustainability practices. Therefore, studies that recommended increasing knowledge and awareness, in order to increase the implementation of environmentally sustainable construction, may have neglected the effect of the other barriers to sustainable construction which may be more critical. Studies with multivariate analyses such as structural equation modelling are needed to establish the contributory effect of the various barriers to environmental sustainability practices and so establish the extent to which knowledge and awareness alone, and other factors, can improve environmental sustainability practices.&nbsp;</p> 2022-09-01T00:00:00+00:00 Copyright (c)