26 © Creative Commons With Attribution (CC-BY) Published by the UFS http://journals.ufs.ac.za/index.php/as Anthony Yusuf Mr Anthony Olukayode Yusuf, M.Sc. research student, Department of Quantity Surveying, Obafemi Awolowo University, PMB 003, Ile-Ife, Nigeria. Phone: +2347037590877, email: , ORCID: https://orcid. org/0000-0003-1574-788X Akintayo Opawole Dr Akintayo Opawole, Department of Quantity Surveying, Obafemi Awolowo University, PMB 003, Ile-Ife, Nigeria. Phone: +2348035125849, email: , ORCID: https://orcid. org/0000-0001-8326-7824 Esther Ebunoluwa Dr Esther Ilori Ebunoluwa, Department of Quantity Surveying, Obafemi Awolowo University, PMB 003, Ile-Ife, Nigeria. Phone: +2348066226592, email: , ORCID: https:// orcid.org/0000-0002-1356-4142 ISSN: 1023-0564 ▪ e-ISSN: 2415-0487 Received: January 2022 Peer reviewed and revised: February 2022 Published: June 2022 KEYWORDS: Building information modelling, BIM implementation, building projects, organisational capability attributes, public sector HOW TO CITE: Yusuf, A., Opawole, A. & Ebunoluwa, E. 2022. Evaluation of the organisational capability of the public sector for the implementation of building information modelling on construction projects. Acta Structilia, 29(1), pp. 26-58. EVALUATION OF THE ORGANISATIONAL CAPABILITY OF THE PUBLIC SECTOR FOR THE IMPLEMENTATION OF BUILDING INFORMATION MODELLING ON CONSTRUCTION PROJECTS RESEARCH ARTICLE1 DOI: http://dx.doi.org/10.18820/24150487/as29i1.2 ABSTRACT 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 ninety- eight (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 1 DECLARATION: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article. Acta Structilia 2022 29(1): 26-58 http://journals.ufs.ac.za/index.php/as mailto:anthonyoyusuf@yahoo.com mailto:anthonyoyusuf@yahoo.com https://orcid.org/0000-0003-1574-788X https://orcid.org/0000-0003-1574-788X mailto:tayoappmail@gmail.com mailto:tayoappmail@gmail.com https://orcid.org/0000-0001-8326-7824 https://orcid.org/0000-0001-8326-7824 mailto:owoyemi_esther@yahoo.com mailto:owoyemi_esther@yahoo.com https://orcid.org/0000-0002-1356-4142 https://orcid.org/0000-0002-1356-4142 http://dx.doi.org/10.18820/24150487/as29i1.2 Yusuf, Opawole & Ebunoluwa 2022 Acta Structilia 29(1): 26-58 27 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 data- sharing 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. ABSTRAK Daar word van organisasies vereis om sekere vermoëns te besit om Bou- inligtingmodellering (BIM), een van die opkomende tegnologieë om die probleem van fragmentasie in die konstruksiebedryf te oorkom, te implementeer. Hierdie studie ondersoek die organisatoriese vermoë-eienskappe wat benodig word vir die implementering van BIM in konstruksieprojekte, met die oog daarop om die prestasie van openbare sektorprojekte te verbeter. Die studie het ‘n kwantitatiewe beskrywende analise aangeneem wat gebaseer is op primêre data wat verkry is van openbare sektor-organisasies in Lagos-staat, Suidwes-Nigerië. Honderd agt-en-negentig (198) geldige vraelyste, verkry van konstruksieprofessionele persone binne die organisasies, het kwantitatiewe data vir die assessering verskaf. Data wat ingesamel is, is ontleed deur beide beskrywende en afleidingsstatistieke te gebruik. Die bevindinge dui daarop dat organisasies in die openbare sektor beskik oor die vermoë-eienskappe vir BIM- implementering in bouprojekte op verskillende vlakke van beskikbaarheid (LAv) en toereikendheid (LAq), met voldoende kragtoevoer wat gegradeer is teen (LAv = 76.00%; LAq = 75.80%); vinnige internetverbinding (LAv = 70.20%; LAq = 69.80%); verandering vanaf tradisionele werkvloei (LAv = 69.80%; LAq = 64.60%); voldoende werksomgewing vir werkers (LAv = 69.60%; LAq = 64.40%); gestandaardiseerde proses (LAv = 66.00%; LAq = 63.40%); voldoende aantal werkers (LAv = 65.60%) en vaardighede om data te deel (LAv = 65.00%); gestandaardiseerde proses (LAq = 63.40%), en samewerkende spankultuur (LAq = 63.00%). Die studie het vasgestel dat die organisasievermoë- eienskappe met ‘n hoë beskikbaarheidsgradering ook ‘n hoë toereikendheidgradering het. Die navorsing kom tot die gevolgtrekking dat die algemene organisatoriese vermoë- eienskappe van die openbare sektor vir BIM op konstruksieprojekte nog nie voldoende ontwikkel is nie en dui dus op die behoefte om spesifieke vermoë-eienskappe wat nodig is om BIM te implementeer, te versterk. Sleutelwoorde: Bou-inligtingmodellering, BIM-implementering, bouprojekte, openbare sector, organisatoriese vermoë-kenmerke 1. INTRODUCTION Tsang, Jardine and Kolodny (1999: 712) as well as Chuks (2022) define capability as the ability to carry out a specific function, that is getting things done in relation to quality, responsiveness and rate within a range of performance levels. In services rendering, this depends not only on technology, but human capabilities are similarly important (Straub, 2010: 1190; Koay & Muthuveloo, 2021: 188). Kangas et al. (1999: 35) and Moingeon et al. (1998: 299) define organisational capability as the strategic usage and deployment of competencies. The term ‘competency’ is the ability or capacity of an organisation to use its resources, in order Yusuf, Opawole & Ebunoluwa 2022 Acta Structilia 29(1): 26-58 28 to achieve specific organisational outcomes (Amit & Schoemaker, 1993: 35; Chuks, 2022). Organisational capability involves diverse concepts such as people, systems, processes, structures, and culture that determine the ability of organisations to deliver results (Schmidtchen & Cotton, 2014: 2; Koay & Muthuveloo, 2021: 170). It combines these concepts that contribute to continuous improvement in the performance of organisations (Schmidtchen & Cotton, 2014: 2: Koay & Muthuveloo, 2021: 170). Building Information Modelling (BIM) implementation by the public sector requires new processes, new technologies, and new behaviour and will inevitably cause organisational changes (Juan et al., 2015: 359; Hardin & McCool, 2014: 45). Such changes will force much improvement of the organisational capabilities to deliver projects (Arayici et al., 2009). These capabilities include personnel’s adequacies in education, training, skills development, infrastructure, internet facilities, adequate power supply, government’s support, and IT-literate personnel, among others (Abbasnejad et al., 2021b: 987; Elhendawi, Smith & Elbeltagi, 2019: 11; Onungwa, Uduma-Olugu & Igwe, 2017: 27; Bui, Merschbrock & Munkvold, 2016; Kori & Kiviniemi, 2015; Alufohai, 2012). Dim, Ezeabasili and Okoro (2015: 001) assert that, in the Nigerian construction industry (NCI), building projects are procured through the traditional system by public and private clients. This traditional system is known for shortcomings such as rework, ineffective sharing of information, lack of proper co-ordination, lack of interoperability and collaboration, as well as adversarial relationship among participants in the project-delivery process, giving rise to the poor performance of projects (Abbasnejad et al., 2021a: 413; Dim et al., 2015: 1; Idoro & Patunola-Ajayi, 2009: 28). Several attempts have been made in terms of initiatives, innovations, and tools such as new contractual arrangements, integrated projected delivery, modelling, and technological innovations, to achieve better performance of construction projects (Isikdag & Underwood, 2010: 550; Olatunji, Sher & Gu, 2010: 68). BIM is one of such processes leading healthy disruptions in construction project delivery across the globe, ensuring collaboration among construction participants, bringing about the expected changes, and leading to successful project delivery (Abbasnejad et al., 2021a: 413; Eadie et al., 2013: 348). BIM is moving the construction industry from the current fragmented and paper-based processes to an integrated workflow, where tasks are condensed into a collaborative and more coordinated process using computation capabilities, internet communication, and data processing into information (Eastman et al., 2011; Saka, Chan & Siu, 2020: 1). This is done to manage the built environment within a realistic and verifiable decision by manipulating reality-based models (Abdullahi et al., 2011). Hence, the implementation of BIM by public sector clients becomes imperative, owing to its ability to substantially reduce the problems associated with public project delivery. Yusuf, Opawole & Ebunoluwa 2022 Acta Structilia 29(1): 26-58 29 In spite of success reports on BIM and its potential to confront challenges of the public sector, Olugboyega and Aina (2016: 22) conclude that, in Nigeria, governments at all levels are not requesting BIM to be used in their projects. This could be partly due to lack of organisational capabilities by the public sector client for its implementation (Babatunde, 2015). This is unexpected because BIM has adequate potential to reduce disputes, address time and cost overrun, improve efficiency, and handle corruption (Alufohai, 2012; Saka et al., 2020: 2). Saleh and Alshawi (2005: 58) suggest that, in order to make effective decisions towards attaining the required capabilities, organisations need to evaluate their current capabilities before implementing ICT systems. In this study, assessment of the organisational capability attributes of the public sector for BIM implementation is, therefore, justified for a number of reasons. The necessity of BIM usage by all stakeholders in the construction industry to curb the problems inherent in the traditional method of project delivery is well established in literature. The public sector as the major stakeholder is expected to set the pace for other participants in the industry. The public sector is the major client of complex projects in Nigeria. Hence, there is n doubt as to the financial ability of the public sector to implement BIM. Moreover, BIM has been used by public sectors in countries such as the United Kingdom, the United States of America, and so on, and its benefits have been well established (Van Wyk, Kajimo- Shakantu & Opawole, 2021). This study has, therefore, become imperative to understand the preparedness of the public sector organisation for the implementation of BIM in the Nigerian construction industry. 2. LITERATURE REVIEW 2.1 Building Information Modelling BIM has several definitions, due to its ever-changing nature (Aranda-Mena et al., 2009: 426). One of these is that BIM is a product, a technology, a strategy, or an innovation. Regardless of its definition, the significant objective of BIM is to provide a complete replication of a structure in a computerised climate, with the sole objective of giving a community stage to overseeing building data all through its life cycle (Aouad et al., 2014; Ibrahim, Hashim & Jamal, 2019: 2). This definition tends to the shortcomings of the past CAD advances. Hassan and Yolles (2009: 53) state that BIM is seven-dimensional. A BIM model begins with a parametrically advanced 3D that has both mathematical and non-mathematical data. The 3D model is a highly rich three-dimensional model (X, Y and Z) made up of intelligent/ smart parametric objects extending to scheduling and sequencing (4D), cost estimating (5D), sustainable design, also termed green design (6D), and facility management (7D). However, as more data is added Yusuf, Opawole & Ebunoluwa 2022 Acta Structilia 29(1): 26-58 30 to the parametric articles in a 3D BIM model, the model becomes more extravagant and more vigorous, highlighting other dimensions (nD). Specialists arrange BIM as 3D, 4D, 5D, 6D, 7D and nD (Aouad, Wu & Lee 2006: 152). 2.2 BIM implementation stages BIM stages are the multiple stages that demarcate capability milestones. BIM functionality, according to Succar (2010: 6), is the ability to perform a mission, produce a service, or create a product. BIM capability stages (or BIM stages) are described as the major milestones that teams and organisations must achieve as they implement BIM. BIM stages define a fixed starting point (the state prior to BIM implementation), three fixed BIM stages, and a variable ending point that allows for unanticipated future technological advances. Pre-BIM refers to the state of the industry prior to BIM implementation, while integrated project delivery (IPD) refers to a method or end objective for implementing BIM (Succar, 2010: 7). Technology, process, and policy components are all part of the BIM stages (Succar, 2010: 9; Koseoglu, Keskin & Ozorhon, 2019). Pre-BIM, BIM stage 1 (object-based modelling), BIM stage 2 (model-based collaboration), BIM stage 3 (network-based integration), and IPD are the stages to go through (Succar, 2014: 8). The minimum requirements for BIM stages are specified. For instance, an organisation must have deployed an object-based modelling software tool to be considered at BIM capability stage 1 (Figure 1). An organisation must also be part of a multidisciplinary model-based collaborative project for BIM capability stage 2. An entity should utilise an organisation-based arrangement such as a model worker to share object-based models with any two different orders to be at BIM stage 3 (Succar, 2010: 7; Koseoglu et al., 2019). The pre-BIM status addresses incoherent venture conveyance, where antagonistic connections describe the development business. Much reliance is put on 2D documentation to portray a 3D reality. In addition, the focus is not on community-oriented practices between partners, and work process is straight and non-concurrent (Succar 2009: 11; Saka et al., 2020: 3). Under pre-BIM conditions, industry experiences low interest in innovation and absence of interoperability (Succar, 2010: 8). The volume and intricacy of changes needed to accomplish every one of the three BIM stages are groundbreaking and surprisingly revolutionary (Henderson & Clark, 1990: 22; Taylor & Levitt, 2005; Ibrahim et al., 2019: 3). Notwithstanding, steady or transformative advances populate the entry from pre-BIM to BIM Stage 1, through every one of the three phases and towards IPD. Recognising these BIM Steps (Figure 1) is instrumental in empowering organisations and people to build their BIM capability and maturity in a methodical way (Succar, 2009: 12; Koseoglu et al., 2019). Yusuf, Opawole & Ebunoluwa 2022 Acta Structilia 29(1): 26-58 31 Figure 1: Steps leading to/separating BIM stages Source: Succar, 2009: 12 2.3 Organisational capability attributes required for BIM implementation Succar (2010: 10) and Dakhil, Underwood and Alshawi (2019: 83) refer to these attributes as BIM competency set, which represents the ability of a BIM player to achieve a BIM requirement. The potential of the BIM concept and its capacity to integrate different participants in the sector will be dependent on the adoption of standardised processes alongside the acquisition of technological equipment able to handle the necessary software, in addition to training and education needed to handle and analyse the information provided correctly. Consequently, this gives rise to the BIM paradigm defined by the triad of policies, processes and technology (Kori & Kiviniemi, 2015; Yusuf, 2014: 22; Succar, 2009: 11). Koseoglu et al. (2019), Haron (2013: 49) and Olatunji, Sher and Gu (2010: 68) identified people, process, and technology as the three vital areas of BIM investment for it to be successfully implemented. However, Zahrizan et al. (2013: 391) opine that people, technology, and policy are three paramount factors in BIM implementation. Similarly, Bew and Underwood (2010) consider them to be the main variables that must be put in place for BIM to be delivered. Although people and process are vital to change and improvement, technology is the enabler that sustains both elements. In the implementation of e-commerce, for example, Ruikar, Anumba and Carrillo (2006: 105) introduced a management element to justify the role of management in coordinating and managing the implementation. Hence, to implement new technologies successfully, management’s awareness, vision, and mission to implement new technologies are needed, in order to plan and drive policies (Abbasnejad et al., 2021b: 989). This was supported by Smith and Tardif (2009) and Eastman et al. (2011). As Abbasnejad et al. (2021b: 976) and Smith and Tardif (2009) further explain, the ability to motivate people, leadership, and management buy-in are critical factors to be considered, in order to implement BIM within an organisation. In addition, to implement BIM, Haron (2013: 43) and Saka et al. (2020: 17) note the need for software evaluation strategy, use of design and build type of Yusuf, Opawole & Ebunoluwa 2022 Acta Structilia 29(1): 26-58 32 project delivery and compatibility, as well as interoperability of BIM software. Hence, some researchers identify technology, process, and policy as the key factors in BIM implementation. Others highlight technology, process, and people, while some include management. After thorough examination, it was found that these classifications are essentially the same, depending on the context and content of each category. Hence, the classification of technology, process, and policy will be adopted as it basically encapsulates the factors of management and people in BIM implementation. Succar (2010: 15) and Saka et al. (2020: 17) posit that for BIM stage 2, which involves model-based collaboration, database-sharing skills, and collaborative processes are essential to achieve it. Davenport (1993: 11, cited in Bew & Underwood [2010]) define process as an organised and measured array of activities aimed at producing specified outputs. In relation to BIM, Yusuf (2014: 24) explains that processes are the means whereby BIM uses are achieved, and process redesign is vital for BIM implementation. In this regard, in an attempt to implement BIM, a clear definition with a consideration of the entire life cycle and monitoring of BIM processes that the organisation will need to deliver its projects are extremely vital. The difference between failure and success of a BIM implementation plan can be having the right process (Abbasnejad et al., 2021b: 990). In addition, there will be a need to alter the conventional workflow practice, in order to provide coordination between BIM and CAD process flow (Succar, 2010: 6). Therefore, the initial compulsory attempt to achieve BIM compliance will be to clearly state the due processes as the yardstick for all activities of the model (Yusuf, 2014: 24). Innovations are important in achieving accuracy, gaining a competitive edge, and attaining greater outcomes and outputs (Bew & Underwood, 2010). Usage of the right technology will be required to aid the already developed BIM processes, as it is a significant part of BIM implementation. BIM requires reasonable innovations to be carried out successfully and ought to be assessed by firms to comprehend the advantages and boundaries of each (Yusuf, 2014: 24; Saka et al., 2020: 17). An adequate plan to adopt international guidelines must be in place, in order to manage change effectively when a beneficial technology is identified. The BIM modeller needs to specify, define, and manage suitable hardware, version and structure, certified software (BIM authoring tools), interoperable data formats, storage processes, user workstation, and good internet connections, among others. It is important to match organisational capabilities with the required technology and BIM authoring tools (Yusuf, 2014: 25). According to Succar (2010: 6) and Adam et al. (2022: 825), the availability of BIM tools assists in the change from drafting-based to object- based workflow. BIM implementation requires adequate infrastructure, skilled and trained workers, sufficient awareness of BIM technology, and knowledge of BIM tools (Abubakar et al.,2013; Onungwa et al., 2017: 26; Yusuf, Opawole & Ebunoluwa 2022 Acta Structilia 29(1): 26-58 33 Elhendawi et al., 2019: 10). Ruya, Chitumu and Kaduma (2018: 4) and Abbasnejad et al. (2021b: 976) opine that, in order to implement BIM, there should be awareness among stakeholders, standards to guide implementation, investment in education, BIM technology, information technology, adequate power supply, training programmes, and government intervention. Arayici et al. (2009) and Dakhil et al. (2019: 91) opine that the following are essential for BIM implementation: continuous staff training on the new process; continuous BIM education; new workflow/work process; new software and technology; new process and workflow implementation; new process establishment; adequate work environment, and the ability to mitigate risks. People are the key asset of the construction industry. Therefore, the public sector must employ enough diligent people, retain them, and develop their skills and capacities to meet the ever-increasing demand of the industry (HM Government, 2013; Elhendawi et al., 2019: 10). To successfully implement BIM, the public sector must engage the right workforce with the necessary skills and develop a collaborative work culture (Gu & London, 2010: 992; Adam et al., 2022: 826). For this reason, new roles such as BIM modeller and BIM administrator have emerged to provide coordination so as to ensure team integration and collaboration efforts in BIM implementation (Gu & London, 2010: 990, Dakhil et al., 2019: 90; Adam et al., 2022: 829). The core objective of the BIM administrator is to guide the team in implementing BIM. The BIM administrator must work to ensure that the people, process, and technology work harmoniously (Yusuf, 2014: 37). According to Succar (2010: 12), alliance-based and risk-sharing contractual arrangements are essential to network-based integration (BIM Stage 3). Laakso and Kiviniemi (2012: 145) and Elhendawi et al. (2019: 10) suggest that BIM implementation requires contract amendment, process change, standardised process, technology adoption, and formal training to develop skill and knowledge. Table 1 summarises these organisational capability attributes. Table 1: Organisational capability attributes required for BIM implementation S/No. Organisational capability attributes required for BIM implementation Author(s) 1 Adequate power supply Ruya, Chitumu and Kaduma (2018) 2 Process redesign Succar (2010); Yusuf (2014); Abbasnejad et al. (2021a) 3 Collaborative team culture Gu and London (2010); Saka et al. (2020) 4 Management awareness Ruikar et al. (2006); Elhendawi et al. (2019) 5 The ability to motivate people Smith and Tardif (2009) 6 Effective risk-management skill Arayici et al. (2009) 7 Speedy internet connection Yusuf (2014) Yusuf, Opawole & Ebunoluwa 2022 Acta Structilia 29(1): 26-58 34 S/No. Organisational capability attributes required for BIM implementation Author(s) 8 Collaborative process Succar (2010); Abbasnejad et al. (2021a) 9 Management’s vision and missions for BIM implementation Ruikar et al. (2006); Smith and Tardif (2009); Abbasnejad et al. (2021b) 10 Plan to adopt international guidelines Yusuf (2014); Abbasnejad et al. (2021b) 11 Coordination between BIM and CAD process flow Succar (2010); Yusuf (2014) 12 The use of design and build type of project delivery Haron (2013) 13 Contract amendment Laakso and Kiviniemi (2012); Elhendawi et al. (2019) 14 Defined responsibilities for the BIM administrator Gu and London (2010); Dakhil et al. (2019) 15 Defined responsibilities for the BIM modeller Gu and London (2010) 16 Formal training to develop skill and knowledge HM Government (2013); Laakso and Kiviniemi (2012); Abbasnejad et al. (2021b) 17 Continuous BIM education and awareness Arayici et al. (2009); Abubakar et al. (2013); Abbasnejad et al. (2021a) 18 Continuous on-the-job training Arayici et al. (2009); Elhendawi et al. (2019) 19 Sufficient number of workers HM Government (2013) 20 Adequate work environment for workers Arayici et al. (2009); Dakhil et al. (2019) 21 Change from traditional work process Yusuf (2014); Dakhil et al. (2019) 22 Adequate ICT infrastructure Yusuf (2014); Olatunji et al. (2010) 23 Adequate technical support for BIM implementation Succar (2010); Yusuf (2014) 24 Software evaluation strategy Haron (2013); Dakhil et al. (2019) 25 Compatibility and interoperability of BIM software Haron (2013); Saka et al. (2020) 26 Standardised process Kori and Kiviniemi (2015) 27 Data-sharing skills Succar (2010); Dakhil et al. (2019) 3. RESEARCH METHODOLOGY 3.1 Research design The study evaluates the organisational capability attributes of the public sector for BIM implementation on construction projects in Nigeria. The methodology adopted in this study is quantitative descriptive analysis based on primary data collected through self-administered questionnaires. Singh (2006: 7) explains that research design is basically a statement of the objective of inquiry, strategies for collection of evidence, analysis Yusuf, Opawole & Ebunoluwa 2022 Acta Structilia 29(1): 26-58 35 of evidence, and recording of findings. The study employs a quantitative approach in collecting and analysing suitable data. In the questionnaire, the 27 organisational capability attributes identified through the literature review are presented to the respondents for evaluation with respect to their levels of availability and levels of adequacy. 3.2 Population, sample, and response rate The target population for this study consists of 1,634 construction professionals in Lagos State Public Service, obtained from the disposition list of Lagos State Public Service. Lagos is located in the Southwestern part of Nigeria. Being a former federal capital and now the commercial nerve centre of the country, Lagos hosts many of the reputable construction companies operating in Nigeria. Lagos is listed as one of the 25 megacities of the world with an estimated population of roughly 17 million in 2007 and a growth rate of 3.2%, which has an attendant pressure on its infrastructure. The numerous construction projects in Lagos are executed by both the private and the public sectors to meet the housing as well as the economic and infrastructure requirements of the emerging megacity (Ameh & Osegbo, 2011: 60). The sampling frame comprises one hundred and fifty- four (154) architects, eighty-five (85) quantity surveyors, two hundred and five (205) builders, five hundred and eighty-six (586) civil engineers, two hundred and eighty-three (283) electrical engineers, and three hundred and twenty-one (321) mechanical engineers in Lagos State Public Service. A 20% sample was selected from each category of the professionals. This makes a total of 327 respondents. Each respondent was chosen entirely by chance, not biased in a systematic manner. Each member of the population had the same chance of being included in the sample (Singleton et al., 1988; Kothari & Gary, 2004). For this reason, randomisation is employed to achieve an unbiased sample. Hence, the portions selected from each professional classification represent the entire population (Pilot & Hungler 1999: 25). A total of 327 copies of the structured questionnaire were administered. Research instruments are fact-finding strategies and tools used for data- collection (Gajewska & Ropel, 2011: 11). One hundred and ninety-eight (198) copies, which represent a response rate of 60.55%, were the valid copies returned and used for the analysis. The total retrieved questionnaires made the breakdown of the study sample to be 17 quantity surveyors, 23 architects, 77 civil engineers, 32 builders, 30 electrical engineers, and 19 mechanical engineers. The response rate of 60.55% is adjudged adequate for a questionnaire survey by Moser and Kalton (1971: 35), who recommend not lower than 30-40%. Yusuf, Opawole & Ebunoluwa 2022 Acta Structilia 29(1): 26-58 36 Table 2: Sample size for the study Respondents Sampling frame Sample size Architects 154 31 Quantity surveyor 85 17 Builders 205 41 Civil engineers 586 117 Electrical engineers 283 57 Mechanical engineers 321 64 Total 1634 327 Source: Disposition List of Lagos State Public Service, 2019 3.3 Data collection Data were collected using self-administered well-structured questionnaires where specific information was listed for the respondents to complete (Bell & Bryman, 2007: 15). A structured questionnaire has been considered an effective data-collection method when measuring respondents’ beliefs, attitudes, and opinions (Van Laerhoven, Van der Zaag-Loonen & Derkx, 2004: 833). The survey questionnaire was designed as a closed- ended type. According to Kothari (2004), closed-ended questionnaires can be easily completed and are relatively quick to analyse. The use of a questionnaire enabled freedom of opinion of individual respondents without fear of stigmatisation, since it ensures anonymity, confidentiality of responses, and protects the identity of respondents (Godfred, 1996, cited in Gajewska & Ropel, 2011: 11). The questionnaire was developed based on the constructs of the literature review and was administered between July and August 2021. The respondents were key professionals that are central to the execution of construction projects and BIM implementation within the public sector. The questionnaire is divided into three parts. Part one, on the respondents’ profiles, obtains information about their academic and professional qualifications, occupation, organisation type, and years of work experience. Part two, on the construct ‘availability’, is a set of 27 Likert-scale measurement items. Respondents were required to indicate the level of availability of organisational capability attributes from the scale measurements, in order to examine their level of availability for BIM implementation in the public sector (see Table 4). Part three, on the construct ‘adequacy’, is a set of 27 Likert-scale measurement items. Respondents were required to indicate the level of adequacy of organisational capability attributes from the scale measurements, in order to examine their level of adequacy for BIM implementation in the public sector (see Table 5). Respondents were informed about the purpose of this study and their freedom to be anonymous. Yusuf, Opawole & Ebunoluwa 2022 Acta Structilia 29(1): 26-58 37 3.4 Method of analysis and interpretation of the findings Both descriptive and inferential statistics are used for the analysis. These were achieved using the Statistical Package for Social Sciences (SPSS) version 20 (Pallant, 2013: 134). The respondents’ background information was analysed, using descriptive statistics, while the specific concepts were analysed, using frequency distribution, percentage, mean, and the Kruskal-Wallis test. Descriptive statistics are considered effective tools in understanding the underlying details of a data set and putting them in a meaningful perspective (Castillo et al., 2010: 168). The 27 organisational capability attributes identified for BIM implementation were rated on a five- point Likert scale. According to Leedy and Ormrod (2015: 185), Likert-type or frequency scales use fixed choice response formats and are designed to measure opinions. For levels of availability, 1 = Never available; 2 = Rarely available; 3 = Sometimes available; 4 = Often available, and 5 = Always available. For level of adequacy, 1 = Very inadequate; 2 = Not adequate; 3 = Averagely adequate; 4 = Adequate, and 5 = Highly adequate. The 5-point scales in each case were converted in the analysis such that 1 = 10%, 2 = 40%, 3 = 60%, 4 = 80% and 5 = 100%. The Kruskal-Wallis test was used to test whether there is any significant difference in the ranking of the attributes by the different categories of respondents (architects, quantity surveyors, civil engineers, electrical engineers, mechanical engineers, and builders) at a 5% significance level. The normality test indicated that the data used in this study significantly deviated from a normal distribution as Shapiro-Wilk Test (SPW) values in all cases were < 0.05. Hence, the Kruskal-Wallis test is considered appropriate for testing the differences in the opinions expressed by the group of respondents. 3.5 Limitations The study was conducted in Lagos State, the commercial nerve centre and the most populous city in Nigeria. The study focuses on BIM implementation on building construction projects by the public sector. The findings mainly reflect the organisational capability attributes of the public sector for BIM implementation in the study environment and may not be generalised, because it could only be applied to the public sector in states or regions with a similar economic, political, and social context. 4. FINDINGS 4.1 Profile of the respondents The profiles of the respondents analysed include organisation, profession, years of working experience, highest academic qualifications, and Yusuf, Opawole & Ebunoluwa 2022 Acta Structilia 29(1): 26-58 38 professional qualifications of the respondents. Other variables analysed were the number of projects in which the respondents were involved, where BIM was used, and the number of projects involved in general since employment. The results of the analysis in Table 3 show that half of the participants (49.5%) worked for the Ministry of Housing (22.7%) and the Ministry of Works and Infrastructure (26.8%). Overall, half of the respondents (65.1%) had either a Bachelor of Science/Bachelor of Technology, B.Sc/B.Tech) (32.8%), or a M.Sc. degree (32.8%), and 64.2% had over 10 years’ work experience in their organisation. Except for civil engineers (38.9%), respondents were almost equally distributed in their occupations, with quantity surveyors (8.6%), architects (9.6%), mechanical engineers (9.6%), electrical engineers (11.6%), and builders (15.2%). This implies that most of the respondents have adequate tertiary qualifications and experience in the public service system of operation to provide information that could help in making useful deductions on organisational capability attributes of the public sector for BIM implementation. The respondents had different professional affiliations, indicating their competence to practise in their various areas of disciplines. This was supported by their membership in their respective discipline regulatory institutions. Over half of the respondents were affiliated with The Nigerian Society of Engineers (62.1%), and the remainder of them were almost equally affiliated with the Nigerian Institute of Quantity Surveyors (NIQS) (8.6%), the Nigerian Institute of Building (NIOB) (16.2%), and the Nigerian Institute of Architects (NIA) (12.1%). The vast majority of the respondents (78.8%) were involved in over 11 public sector projects, in general, but the vast majority of them (88.9%) had not been involved in projects where BIM was used. This reveals the paucity of BIM usage in the public sector. In general, the background information of the respondents gives credence to the validity of information gathered. Table 3: Background information of the respondents Demographic Category Frequency (n=198) (%) Organisation Ministry of Works and Infrastructure 53 26.8 Ministry of Housing 45 22.7 Ministry of Transportation 32 16.2 Ministry of Environmental and Physical Planning 27 13.6 Ministry of Waterfront Infrastructure 25 12.6 Ministry of Education 16 8.1 Yusuf, Opawole & Ebunoluwa 2022 Acta Structilia 29(1): 26-58 39 Profession Civil engineer 77 38.9 Builder 32 16.2 Electrical engineer 30 15.2 Architect 23 11.6 Mechanical engineer 19 9.6 Quantity surveyor 17 8.6 Education Higher National Diploma (HND) 50 25.3 Postgraduate Diploma (PGD) 19 9.6 Bachelor of Science/Bachelor of Technology (B.Sc./B.Tech) 65 32.8 M.Sc. 64 32.3 Professional registration NIQS 17 8.6 NIOB 32 16.2 NIA 24 12.1 NSE 123 62.1 Other 2 1 Experience (years) 1-5 18 9.1 6-10 53 26.8 11-15 57 28.8 16-20 42 21.2 21-25 17 8.6 Over 25 11 5.6 Number of BIM projects since employment 0 176 88.9 1-5 14 7.1 5-10 4 2 11-15 1 0.5 16-20 3 1.5 Number of general projects since employment 1-5 16 8.1 6-10 26 13.1 11-15 45 22.7 16-20 40 20.2 Over 20 71 35.9 4.2 Availability of organisational capability attributes of the public sector for BIM implementation Data were collected to assess the organisational capability attributes of the public sector for BIM implementation in building projects. In order to achieve this sub-objective, the organisational capability attributes of the public sector were examined based on levels of availability. The result is presented in Table 4. Adequate power supply was the organisational capability attribute with the highest rating in terms of level of availability (LAv = 76.00%). This is followed by speedy internet connection (LAv = 70.20%), change from traditional workflow (LAv = 69.80%), adequate work environment for workers Yusuf, Opawole & Ebunoluwa 2022 Acta Structilia 29(1): 26-58 40 (LAv = 69.60%), standardised process (LAv = 66.00%), sufficient number of workers (LAv = 65.60%), data-sharing skills (LAv = 65.00%), and continuous on the job training (LAv = 64.80%). The low rated organisational capability attributes with respect to availability were clearly defined roles for the BIM modeller (LAv = 41.40%), clearly defined roles for the BIM administrator (LAv = 41.80%), compatibility and interoperability of BIM (LAv = 42.20%), the use of design and build type of project delivery (LAv = 42.8%), and coordination between BIM and CAD process flow (LAv = 44.60%). These were followed by attributes such as software evaluation strategy (LAv = 45.00%), contract amendment (LAv = 49.20%), management’s vision and missions for BIM implementation (LAv = 49.20%), and documented plan to adopt international guidelines and standards (LAv = 49.40%). The high rating of adequate power supply (LAv = 76.00%) and of speedy internet connection (LAv = 70.20%) is presumably the result of alternative sources of power supply being used by the public sector in Lagos State. These alternative sources of power supply could include generator, solar energy, and inverter, among others. Most of the public offices depend on generators and are still paper based (Abubakar et al., 2014; Sawhney, 2014; Abbasnejad et al., 2021b: 974). The dependence on generator for power supply increases the running cost of offices and affects the judicious use of the limited available resources. The current paper-based and traditional system of operation within public offices is prone to errors and omissions, and also wastes time and money. This is in consonance with Ayodele and Alabi (2011: 143) and Saka et al. (2020: 2) who opined that the current system often leads to cost overruns, delays, and conflicts among the project team which are not favourable for BIM implementation. The high rating of sufficient number of workers (LAv = 65.60%) and adequate work environment for workers (LAv = 69.60%) may result from the fact that the public sector remains the major employer of labour in Nigeria. The large workforce in the public sector has not translated to effectiveness and efficiency because they remain incapable of managing their projects and their private sector counterpart with slim workforce performs better in project delivery (Fitsilis & Chalatsis, 2014: 131; Olufemi et al., 2020: 846). Olufemi, Afegbua & Etim (2020: 849) and Babatunde (2015) earlier revealed that the private sector performs better in their project execution and their capability for PPP projects is higher than the public sector, despite being the major stakeholder in the Nigerian construction industry. The high ranking of adequate work environment for workers is expected since Lagos is the commercial nerve centre of Nigeria and an emerging megacity. Therefore, several projects are being executed to meet the need of the emerging megacity (Ameh & Osegbo, 2011: 60). In addition, the current global pandemic occasioned by COVID-19 has forced several organisations, including the public sector, to make certain capability Yusuf, Opawole & Ebunoluwa 2022 Acta Structilia 29(1): 26-58 41 attributes available, in order to align with the new normal in the discharge of their operation. The low rating of several core capability attributes such as clearly defined roles for the BIM modeller (LAv = 41.40%); clearly defined roles for the BIM administrator (LAv = 41.80%); software evaluation strategy (LAv = 45.00%), and coordination between BIM and CAD process flow (LAv = 44.60%), among others, shows that the public sector lacks the necessary personnel to develop these capability attributes. The reason for this is that the sufficient number of workers is ranked high, but the necessary expertise required for BIM implementation is ranked low. This indicates that the public sector lacks the necessary expertise and know-how required for BIM implementation, although they have a sufficient number of workers. This agrees with previous research by Opawole et al. (2019), Tembo and Rwelamila (2008: 8), and Awwad (2013) which identified the public sector as having an over-reliance on outsourced consultants in managing projects and merely obtaining the reports of the construction process. It is also a reflection of the apathy of the public sector toward BIM and other related templates and software usage. It further underscores the fact that the public sector has no clear policy on the usage of computer software and other technological developments in its operations (Hamma- Adama & Kouider, 2018: 1118; Ihemeje & Afegbua, 2020: 60). This is not surprising because the usage of BIM technologies in Nigeria appears to be limited to 3D visualisation and the knowledge of BIM is low (Onungwa et al., 2017: 27). The low rating of capability attributes such as the use of design and build type of project delivery (LAv = 42.80%), contract amendment (LAv = 49.20%), and documented plan to adapt international guidelines (LAv = 49.40%) portrays that the public sector in Nigeria is still entrenched in the traditional method of project delivery. Many professionals within Nigeria’s public sector are not conversant with new development in the global construction landscape (Onungwa et al., 2017: 27; Ihemeje & Afegbua, 2020: 60). These results reveal the absence of several basic organisational attributes for BIM implementation in the study area. Roughly 50% of these organisational attributes were rated below 60.00%. This agrees with Onungwa et al. (2017: 27) and Abubakar et al. (2014) who opine that public offices lack capability attributes to implement BIM. This confirm the absence of the required facilities for BIM implementation in the study area. Hence, to implement BIM, these organisational capability attributes must be made available and effectively deployed in public sector organisations. Yusuf, Opawole & Ebunoluwa 2022 Acta Structilia 29(1): 26-58 42 Ta bl e 4: A va ila bi lit y of o rg an is at io na l c ap ab ili ty a ttr ib ut es o f t he p ub lic s ec to r f or B IM im pl em en ta tio n O rg an is at io na l c ap ab ili ty a ttr ib ut es O V E R A LL Q S B LD R E E G A R C M E G C E G K W S ig . LA v (% ) S D R LA v (% ) R LA v (% ) R LA v (% ) R LA v (% ) R LA v (% ) R LA v (% ) R A d e q ua te p o w e r s up p ly 76 .0 0 0. 78 0 1 74 .2 0 1 74 .4 0 1 78 .6 0 1 74 .8 0 1 83 .2 0 1 74 .6 0 1 0. 27 7 Sp e e d y in te rn e t c o nn e c tio n 70 .2 0 0. 91 1 2 67 .0 0 5 71 .2 0 2 67 .4 0 4 71 .4 0 2 75 .8 0 2 69 .6 0 4 0. 56 7 C ha ng e fr o m t ra d iti o na l w o rk p ro c e ss 69 .8 0 0. 69 6 3 70 .6 0 3 70 .6 0 3 69 .4 0 2 69 .6 0 4 64 .2 0 4 71 .0 0 2 0. 34 4 A d e q ua te w o rk e nv iro nm e nt fo r w o rk e rs 69 .6 0 0. 70 3 4 71 .8 0 2 70 .0 0 4 69 .4 0 2 71 .4 0 2 63 .2 0 7 70 .2 0 3 0. 33 9 St a nd a rd ise d p ro c e ss 66 .0 0 0. 84 7 5 65 .8 0 6 68 .8 0 5 62 .6 0 7 66 .0 0 6 64 .2 0 4 66 .4 0 6 0. 93 3 Su ffi c ie nt n um b e r o f w o rk e rs 65 .6 0 0. 79 4 6 69 .4 0 4 66 .8 0 7 63 .4 0 6 62 .6 0 8 63 .2 0 7 66 .8 0 5 0. 71 9 D a ta -s ha rin g s ki lls 65 .0 0 0. 91 6 7 63 .6 0 9 62 .6 0 10 64 .0 0 5 63 .4 0 7 73 .6 0 3 65 .2 0 7 0. 38 1 C o nt in uo us o n- th e -jo b t ra in in g 64 .8 0 0. 85 6 8 64 .8 0 8 68 .8 0 5 62 .0 0 9 67 .8 0 5 61 .0 0 9 64 .4 0 9 0. 58 0 C o lla b o ra tiv e p ro c e ss 62 .4 0 0. 91 0 9 61 .2 0 12 66 .2 0 8 59 .4 0 13 57 .4 0 14 60 .0 0 13 64 .4 0 9 0. 36 4 A d e q ua te IC T in fra st ru c tu re 62 .4 0 0. 93 5 10 63 .6 0 9 59 .4 0 15 60 .0 0 10 60 .8 0 10 61 .0 0 9 65 .0 0 8 0. 60 3 Fo rm a l t ra in in g t o d e ve lo p s ki ll a nd k no w le d g e 62 .0 0 0. 90 5 11 65 .8 0 6 64 .4 0 9 57 .4 0 17 60 .8 0 10 54 .8 0 18 63 .8 0 11 0. 18 1 A b ilit y to m o tiv a te p e o p le 61 .4 0 0. 89 8 12 60 .0 0 14 60 .0 0 14 60 .0 0 10 61 .8 0 9 61 .0 0 9 62 .8 0 13 0. 98 9 C o lla b o ra tiv e t e a m c ul tu re 61 .2 0 0. 89 9 13 61 .2 0 12 61 .8 0 12 60 .6 0 8 56 .6 0 15 59 .0 0 15 63 .2 0 12 0. 82 7 C o nt in uo us B IM e d uc a tio n a nd a w a re ne ss 60 .8 0 0. 96 6 14 60 .0 0 14 62 .6 0 10 60 .0 0 10 60 .0 0 13 61 .0 0 9 60 .8 0 15 0. 99 6 Ef fe c tiv e m a na g e m e nt s ki ll 59 .8 0 0. 94 2 15 58 .8 0 18 60 .6 0 13 58 .0 0 16 55 .6 0 17 57 .8 0 17 62 .4 0 14 0. 67 3 M a na g e m e nt a w a re ne ss o f B IM 59 .2 0 0. 88 3 16 60 .0 0 14 58 .8 0 16 59 .4 0 13 60 .8 0 10 64 .2 0 4 57 .4 0 17 0. 83 8 A d e q ua te t e c hn ic a l s up p o rt fo r BI M im p le m e nt a tio n 58 .8 0 0. 99 3 17 60 .0 0 14 57 .6 0 16 59 .4 0 13 56 .6 0 15 60 .0 0 13 59 .4 0 16 0. 98 5 Pr o c e ss re d e sig n 56 .2 0 0. 96 7 18 57 .6 0 20 53 .8 0 18 56 .0 0 18 55 .6 0 17 59 .0 0 15 56 .6 0 18 0. 92 9 Yusuf, Opawole & Ebunoluwa 2022 Acta Structilia 29(1): 26-58 43 O rg an is at io na l c ap ab ili ty a ttr ib ut es O V E R A LL Q S B LD R E E G A R C M E G C E G K W S ig . LA v (% ) S D R LA v (% ) R LA v (% ) R LA v (% ) R LA v (% ) R LA v (% ) R LA v (% ) R Pl a n to a d o p t in te rn a tio na l g ui d e lin e s 49 .4 0 1. 07 4 19 58 .8 0 18 53 .8 0 18 44 .0 0 20 49 .6 0 21 44 .2 0 20 48 .8 0 21 0. 28 2 C o nt ra c t a m e nd m e nt 49 .2 0 1. 21 6 21 62 .4 0 11 50 .0 0 20 40 .0 0 22 52 .2 0 19 39 .0 0 21 51 .2 0 20 0. 02 2* M a na g e m e nt ’s v isi o n a nd m iss io ns fo r B IM 49 .2 0 1. 10 7 20 50 .6 0 26 45 .6 0 21 52 .0 0 19 46 .0 0 23 45 .2 0 19 51 .4 0 19 0. 74 7 So ft w a re e va lu a tio n st ra te g y 45 .0 0 0. 96 9 22 54 .2 0 23 45 .6 0 21 42 .6 0 21 43 .4 0 27 39 .0 0 21 45 .4 0 22 0. 33 2 C o o rd in a tio n b e tw e e n BI M a nd C A D p ro c e ss fl o w 44 .6 0 1. 14 6 23 51 .8 0 25 43 .8 0 25 41 .4 0 23 50 .4 0 20 39 .0 0 21 44 .2 0 23 0. 46 8 Th e u se o f d e sig n a nd b ui ld ty p e o f p ro je c t d e liv e ry 42 .8 0 1. 19 1 24 55 .2 0 22 39 .4 0 27 39 .4 0 24 45 .2 0 24 33 .6 0 25 44 .2 0 23 0. 08 9 C o m p a tib ilit y a nd in te ro p e ra b ilit y o f B IM 42 .2 0 1. 03 6 25 50 .6 0 26 42 .6 0 23 38 .6 0 27 44 .4 0 25 37 .8 0 24 42 .0 0 26 0. 64 6 C le a rly d e fin e d ro le s fo r t he B IM a d m in ist ra to r 41 .8 0 1. 21 8 26 54 .2 0 23 42 .6 0 23 37 .4 0 25 44 .4 0 25 31 .6 0 36 42 .4 0 25 0. 06 5 C le a rly d e fin e d ro le s fo r t he B IM m o d e lle r 41 .4 0 1. 16 7 27 56 .4 0 21 41 .2 0 26 37 .4 0 25 47 .8 0 22 29 .4 0 27 40 .6 0 27 0. 00 8* LA v = Le ve l o f a va ila b ilit y; S D = S ta nd a rd d e vi a tio n; R = Ra nk ; Q S = Q ua nt ity s ur ve yo r; BL D R= B ui ld e r; EE G = El e c tr ic a l e ng in e e r; A RC = A rc hi te c t; M EG = M e c ha ni c a l e ng in e e r; C EG = C iv il e ng in e e r; KW = Kr us ka l W a llis ; * Si g . p -v a lu e ≤ 0. 05 Yusuf, Opawole & Ebunoluwa 2022 Acta Structilia 29(1): 26-58 44 The study established that there is no statistically significant difference in the opinions of the group of respondents regarding the availability of the organisational capability attributes of the public sector for BIM implementation, except in two, namely contract amendment (LAv = 49.20%, p-value = 0.022) and clearly defined role for the BIM modeller (LAv = 41.40%, p-value = 0.008). The p-values of the attributes were ≤ 0.05 level of significance (Table 4). This implies that the construction professionals have different perceptions about the availability of these two organisational capability attributes (contract amendment and clearly defined role for the BIM modeller) in the study area. The respondents’ consensus on the availability of most of the organisational capability attributes might be a reflection of bias to protect and portray their organisations in good light. In addition, the different level of engagement and interaction of the respondents with these organisational capability attributes, based on their various professional roles and responsibilities, might have influenced their opinions. 4.3 Adequacy of organisational capability attributes of the public sector for BIM implementation Data were collected to assess the organisational capability attributes of the public sector for BIM implementation in building projects. In order to achieve this sub-objective, the organisational capability attributes of the public sector were examined, based on levels of adequacy. The result is presented in Table 5. Adequate power supply was the organisational capability attribute with the highest rating in terms of level of adequacy (LAq = 75.80%). This is followed by speedy internet connection (LAq = 69.80% ); change from traditional work flow (LAq = 64.60%); adequate work environment for workers (LAq = 64.40%); data-sharing skills (LAq = 63.60%); standardised process (LAq = 63.40%); collaborative team culture (LAq = 63.00%); the ability to motivate people (LAq = 62.60%); collaborative process (LAq = 62.20%), and effective risk-management skills (LAq = 62.00%), which ranked 2nd, 3rd, 4th, 5th, 6th, 7th, 8th, 9th and 10th, respectively. The least rated capability attributes were the clearly defined roles for the BIM modeller (LAq = 38.20%); the clearly defined roles for the BIM administrator (LAq = 39.00%); the use of design and build type of project delivery to implement BIM (LAq = 40.40%); coordination between BIM and CAD process flow (LAq = 40.60%); compatibility and interoperability of BIM software (LAq = 42.40%); contract amendment (LAq = 43.40%); plan to adopt international standards (LAq = 43.60%), and software evaluation strategy (LAq = 43.60). These ranked 27th, 26th, 25th, 24th, 23rd, 22nd, 21st, and 20th, respectively. Yusuf, Opawole & Ebunoluwa 2022 Acta Structilia 29(1): 26-58 45 The high rating of adequate power supply (LAq = 75.80%) could result from dependence on generator and other alternative sources of power supply. This agrees with Abubakar et al. (2014), Manu et al. (2019), as well as with Ihemeje and Afegbua (2020: 63), who noted that public offices in Nigeria depend more on generators for power supply. Although previous research (Afolabi et al. 2019; Onungwa et al., 2017: 26; Abubakar et al., 2014) noted that the use of ICT in public offices is low, speedy internet connection was rated high (LAq = 69.80%). This could have improved as a result of the current global pandemic (COVID-19), which has forced several organisations (public sector inclusive) to embrace the use of ICT in their operations. Most of the public offices operations are paper- based, with minimal usage of software, technology, and innovations that require high-speed internet connection to download and upload large files such as BIM (Sawhney, 2014; Zhao et al., 2016: 156; Afolabi et al., 2019). The high rating of collaborative team culture (LAq = 63.00%) and collaborative process (LAq = 62.20%) reflect the nature of the construction project execution, which entails interaction and cooperation with different professionals. This is especially the case in the public sector, where there can be diverse stakeholders on a particular project. Evidently, in such work environment, collaboration is very important for project execution and day-to-day operations. In addition, the current COVID-19 pandemic has forced several organisations, including the public sector, to improve on their capability attributes, in order to manage the disruptions in business operations and workflow. The low rating of many core capability attributes, which are software related, such as clearly defined roles for the BIM modeller (LAq = 38.20%); clearly defined roles for the BIM administrator (LAq = 39.00%); the use of design and build type of project delivery to implement BIM (LAq = 40.4%); coordination between BIM and CAD process flow (LAq = 40.60%); compatibility and interoperability of BIM software (LAq = 42.4%); contract amendment (LAq = 43.40%), and software evaluation strategy (LAq = 43.60%) indicates that the public sector is lagging in the usage of software and modern techniques. The public sector still appears entrenched in the traditional practice, where lines and symbols on paper have been used to prepare working drawings, construction plans, bills of quantities, and engineering drawings. These results agree with previous research (Muhammed & Isah, 2012: 660; Kasimu & Usman, 2013: 126; Olorunkiya, 2017). In Nigeria, where public projects dominate the construction sector (Alufohai, 2012; Hamma-Adama & Kouider, 2018: 1117), the implementation of modern methods and techniques is non-negotiable to enhance the performance of public projects. This is crucial to confront fragmentation and the uncoordinated way in which projects are being executed have been Yusuf, Opawole & Ebunoluwa 2022 Acta Structilia 29(1): 26-58 46 identified as the main causes of poor project performance. Unfortunately, compatibility and interoperability of BIM software, which is crucial for the public sector to implement BIM and eradicate the disjointed practices in project delivery, were rated very low in adequacy. Overall, the results show the poor state of organisational capability attributes of the public sector for BIM implementation. It is noteworthy that over 50% of these capability attributes have a level of adequacy below 60.00%. A good number of the capability attributes possessed by the public sector appear grossly inadequate although available. Hence, BIM may not be implemented soonest. This finding agrees with Afolabi et al. (2019), Iwarere and Lawal (2011: 23), Arnaboldi, Azzone and Savoldelli (2004: 218), and MOUCSF (2015), who identify the public sector as presently not capable of managing projects using modern methods. This is especially the situation in Nigeria, where there is no legislative roadmap for the use of technology, software, and innovative tools. This is unfortunate, despite the large-scale construction activities being undertaken by the public sector which is expected to take advantage of BIM, in order to enjoy its enormous advantage. Yusuf, Opawole & Ebunoluwa 2022 Acta Structilia 29(1): 26-58 47 Ta bl e 5: A de qu ac y of o rg an is at io na l c ap ab ili ty a ttr ib ut es o f t he p ub lic s ec to r f or B IM im pl em en ta tio n O rg an is at io na l c ap ab ili ty at tr ib ut es O V E R A LL Q S B LD R E E G A R C M E G C E G K W S ig . LA q (% ) S D R LA q (% ) R LA q (% ) R LA q (% ) R LA q (5 ) R LA q (% ) R LA q (% ) R A d e q ua te p o w e r s up p ly 75 .8 0 0. 81 6 1 69 .4 0 1 77 .6 0 1 77 .4 0 1 74 .8 0 1 83 .2 0 1 74 .2 0 1 0. 25 3 Sp e e d y in te rn e t c o nn e c tio n 69 .8 0 0. 99 1 2 65 .8 0 3 65 .0 0 4 72 .6 0 2 70 .4 0 2 75 .8 0 2 70 .2 0 2 0. 36 9 C ha ng e fr o m t ra d iti o na l w o rk p ro c e ss 64 .6 0 0. 84 1 3 65 .8 0 3 65 .6 0 2 62 .0 0 9 64 .4 0 8 62 .2 0 5 65 .8 0 3 0. 91 0 A d e q ua te w o rk e nv iro nm e nt fo r w o rk e rs 64 .4 0 0. 84 8 4 64 .8 0 5 65 .6 0 2 62 .0 0 9 65 .2 0 3 61 .0 0 10 65 .2 0 4 0. 88 1 D a ta -s ha rin g s ki lls 63 .6 0 0. 94 2 5 63 .6 0 6 59 .4 0 12 62 .6 0 8 65 .2 0 3 68 .4 0 3 63 .8 0 7 0. 81 7 St a nd a rd ise d p ro c e ss 63 .4 0 0. 90 5 6 67 .0 0 2 63 .2 0 5 63 .4 0 6 65 .2 0 3 57 .8 0 12 63 .4 0 9 0. 70 3 C o lla b o ra tiv e t e a m c ul tu re 63 .0 0 0. 79 2 7 63 .6 0 6 60 .0 0 10 64 .6 0 4 58 .2 0 13 62 .2 0 5 65 .2 0 4 0. 44 2 Th e a b ilit y to m o tiv a te p e o p le 62 .6 0 0. 82 4 8 57 .6 0 13 61 .8 0 6 64 .6 0 4 65 .2 0 3 62 .2 0 5 62 .4 0 11 0. 78 2 C o lla b o ra tiv e p ro c e ss 62 .2 0 0. 88 1 9 57 .6 0 13 61 .2 0 8 63 .4 0 6 61 .8 0 10 63 .2 0 4 62 .8 0 10 0. 94 7 Ef fe c tiv e ri sk -m a na g e m e nt sk ills 62 .0 0 0. 89 3 10 58 .8 0 11 61 .8 0 6 61 .4 0 11 61 .8 0 10 57 .8 0 12 63 .8 0 7 0. 74 5 Su ffi c ie nt n um b e r o f w o rk e rs 61 .4 0 0. 86 4 11 63 .6 0 6 60 .6 0 9 61 .4 0 11 59 .2 0 12 62 .2 0 5 61 .8 0 12 0. 97 1 C o nt in uo us o n- th e -jo b tr a in in g 61 .4 0 0. 87 0 12 56 .4 0 17 59 .4 0 12 58 .0 0 15 65 .2 0 3 59 .0 0 11 64 .2 0 6 0. 24 5 M a na g e m e nt a w a re ne ss o f B IM 60 .2 0 0. 93 4 13 50 .6 0 25 57 .6 0 15 65 .4 0 3 64 .4 0 8 62 .2 0 5 59 .8 0 13 0. 09 7 C o nt in uo us B IM e d uc a tio n a nd t ra in in g 58 .4 0 0. 88 0 14 56 .4 0 17 60 .0 0 10 59 .4 0 13 56 .6 0 16 52 .6 0 17 59 .8 0 13 0. 57 4 A d e q ua te IC T in fra st ru c tu re to s up p o rt B IM 57 .8 0 0. 91 1 15 61 .2 0 9 57 .6 0 15 56 .0 0 16 57 .4 0 14 57 .8 0 12 58 .0 0 17 0. 92 4 Pr o c e ss re d e sig n 57 .8 0 1. 00 4 16 58 .8 0 11 59 .4 0 12 53 .4 0 18 57 .4 0 14 54 .8 0 16 59 .8 0 13 0. 70 9 Yusuf, Opawole & Ebunoluwa 2022 Acta Structilia 29(1): 26-58 48 O rg an is at io na l c ap ab ili ty at tr ib ut es O V E R A LL Q S B LD R E E G A R C M E G C E G K W S ig . LA q (% ) S D R LA q (% ) R LA q (% ) R LA q (% ) R LA q (5 ) R LA q (% ) R LA q (% ) R Fo rm a l t ra in in g t o d e ve lo p sk ills a nd k no w le d g e 57 .4 0 0. 89 7 17 57 .6 0 13 57 .6 0 15 59 .4 0 13 55 .6 0 17 47 .4 0 19 59 .4 0 16 0. 17 6 A d e q ua te t e c hn ic a l s up p o rt fo r B IM 56 .0 0 0. 96 1 18 61 .2 0 9 56 .8 0 18 54 .0 0 17 51 .4 0 18 56 .8 0 15 56 .4 0 18 0. 68 3 M a na g e m e nt ’s v isi o n a nd m iss io ns fo r B IM 51 .0 0 1. 11 1 19 55 .2 0 19 48 .8 0 19 49 .4 0 19 47 .0 0 19 48 .4 0 18 53 .2 0 19 0. 70 5 So ft w a re e va lu a tio n st ra te g y 43 .6 0 1. 03 9 20 54 .2 0 21 43 .2 0 20 43 .4 0 20 37 .4 0 26 41 .0 0 20 43 .8 0 22 0. 31 8 Pl a n to a d o p t in te rn a tio na l g ui d e lin e s 43 .6 0 1. 22 9 21 57 .6 0 13 42 .6 0 21 38 .0 0 25 43 .4 0 20 32 .6 0 22 46 .0 0 20 0. 03 7* C o nt ra c t a m e nd m e nt 43 .4 0 1. 16 2 22 55 .2 0 19 40 .0 0 23 42 .6 0 21 40 .8 0 21 32 .6 0 22 46 .0 0 20 0. 05 9 C o m p a tib ilit y a nd in te ro p e ra b ilit y o f B IM 42 .4 0 1. 07 4 23 49 .4 0 26 40 .6 0 22 42 .0 0 22 40 .8 0 21 36 .8 0 21 43 .6 0 23 0. 69 6 C o o rd in a tio n b e tw e e n BI M a nd C A D 40 .6 0 1. 18 6 24 51 .8 0 24 35 .6 0 24 39 .4 0 24 39 .2 0 24 32 .6 0 22 42 .8 0 24 0. 10 5 Th e u se o f d e sig n a nd b ui ld c o nt ra c t 40 .4 0 1. 16 2 25 54 .2 0 21 35 .6 0 24 42 .0 0 22 40 .0 0 23 29 .4 0 25 41 .6 0 25 0. 02 5* C le a rly d e fin e d ro le s fo r t he BI M a d m in ist ra to r 39 .0 0 1. 13 0 26 54 .2 0 21 35 .0 0 26 38 .0 0 25 36 .6 0 27 26 .4 0 26 41 .6 0 25 0. 00 3* C le a rly d e fin e d ro le s fo r t he BI M m o d e le r 38 .2 0 1. 08 1 27 49 .4 0 26 36 .2 0 27 37 .4 0 27 38 .2 0 25 25 .2 0 27 41 .6 0 27 0. 01 9* LA q = L e ve l o f a d e q ua c y; S D = S ta nd a rd d e vi a tio n; R = Ra nk ; Q S = Q ua nt ity s ur ve yo r; BL D R= B ui ld e r; EE G = El e c tr ic a l e ng in e e r; A RC = A rc hi te c t; M EG = M e c ha ni c a l e ng in e e r; C EG = C iv il e ng in e e r; KW = Kr us ka l W a llis ; * Si g . p -v a lu e ≤ 0. 05 Yusuf, Opawole & Ebunoluwa 2022 Acta Structilia 29(1): 26-58 49 It is noteworthy that capability attributes with a high level of availability (adequate power supply, speedy internet connection, change from traditional workflow, and adequate work environment for workers) also have a high level of adequacy. Similarly, attributes with a low level of availability (clearly defined roles for the BIM modeller, clearly defined roles for the BIM administrator, the use of design and build type of project delivery to implement BIM, compatibility and interoperability of BIM implementation, and coordination between BIM and CAD process flow) also have a low level of adequacy. This finding reveals the need for the public sector to improve on the critical attributes and make the same adequate, in order to implement BIM in the execution of building projects. These findings agree with Ihemeje and Afegbua (2020: 63), Olufemi et al. (2020: 846), Mayedwa and Van Belle (2016: 50), who posited that the public sector lacks adequate capability attributes to successfully execute its projects. The study established that there is no statistically significant difference in the opinions expressed on the adequacy of the organisational capability attributes of the public sector for BIM implementation, except in four as observed by the respondents, namely plan to adopt international guidelines (LAq = 43.60%, p-value = 0.037); the use of design and build type of contract (LAq = 40.40%, p-value = 0.025); clearly defined role for the BIM administrator (LAq = 39.00%, p-value = 0.003), and clearly defined role for the BIM modeller (LAq = 38.20%, p-value = 0.019). The p-values of the attributes were ≤ 0.05 level of significance (Table 5). This implies that the construction professionals have a similar perception about the adequacy of these organisational capability attributes, except in four, namely plan to adopt international guidelines; the use of design and build type of contract; clearly defined role for the BIM administrator, and clearly defined role for the BIM modeller in the study area. The differences in the respondents’ opinions on these four (4) organisational capability attributes are as expected, because all these capability attributes ranked low and are more or less peculiar to BIM implementation. It will be most unlikely for them to be adequate in an organisation that is not implementing BIM. 5. CONCLUSION This study examined the organisational capability attributes of the public sector for the implementation of BIM and indicated the implications for enhancing the performance of public sector projects. Findings revealed that the capability attributes for BIM implementation with high rating are those that are not peculiar to BIM implementation, but are used for general and day-to-day operations in any typical organisation. Most of the attributes with low ratings are those that are specifically for BIM implementation. This suggests that the competence and capability of the public sector Yusuf, Opawole & Ebunoluwa 2022 Acta Structilia 29(1): 26-58 50 must be further developed, not only to capture capability attributes that are deployed in the general operational activities of the organisations, but also to include the specific requirements for BIM implementation. The findings of the study also showed that organisational capability attributes with high level of availability also had a high level of adequacy and those with low availability rating have a low adequacy rating. 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