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Abreu, M M d and Lordsleem Jr, A C (2019) Aluminum formwork system: loss and productivity. Built Environment Project and Asset Management, 9(05), 616–27.

Abuzeinab, A, Arif, M, Kulonda, D J and Awuzie, B O (2016) Green business models transformation: Evidence from the UK construction sector. Built Environment Project and Asset Management, 6(05), 478-90.

Agbesi, K, Fugar, F D and Adjei-Kumi, T (2018) Modelling the adoption of sustainable procurement in construction organisations. Built Environment Project and Asset Management, 8(05), 461–76.

Ahmad, T and Aibinu, A A (2017) Project delivery attributes influencing green building project outcomes: A review and future research directions. Built Environment Project and Asset Management, 7(05), 471-89.

Akinradewo, O, Aigbavboa, C and Oke, A (2020) Accuracy of road construction preliminary estimate: examining the influencing factors. Built Environment Project and Asset Management, 10(05), 657–71.

• Type: Journal Article
• Keywords: Construction industry; Ghana; Project estimate; Project performance; Road projects;
• ISBN/ISSN: 2044-124X
• URL: https://doi.org/10.1108/BEPAM-11-2019-0101
• Abstract:
  Preparation of preliminary estimate is difficult owing to the lack of full project details in the early phases of the construction project. This paper seeks to assess the estimation techniques used for road projects and the critical factors affecting their accuracy in the Ghanaian construction industry. Quantitative research design was adopted and questionnaire was designed to retrieve data. The target population were engineers and quantity surveyors who were contacted using an e-questionnaire through their professional bodies owing to location constraints. Retrieved data were analysed using descriptive and exploratory factor analysis. In order to compare the opinions of the respondents, the Mann–Whitney U-test was employed. The survey revealed that subjective, parametric, comparative and analytical estimations are in use in Ghana. The most critical factors influencing the accuracy of estimation techniques are improper project planning, insufficient preliminary site investigation and usage of shortcuts, among others. This study was limited to Accra, Ghana, due to time and distance constraint. For accuracy of preliminary estimates to be improved, estimators being the custodian of the estimate are expected to be devoid of errors such as arithmetic calculation errors, inaccurate quantity measurement and error of omission. The usage of estimating software can eliminate these human errors. The study will assist policymakers and stakeholders in aligning mitigative actions for factors influencing preliminary estimate of road projects with defined clusters rather than basic ranks. With attention focussed on the characteristics of each cluster, accuracy of preliminary estimate can be improved.

Alashwal, A M and Chew, M Y (2017) Simulation techniques for cost management and performance in construction projects in Malaysia. Built Environment Project and Asset Management, 7(05), 534-45.

Almarri, K and Boussabaine, H (2017) Interdependency of the critical success factors and ex-post performance indicators of PPP projects. Built Environment Project and Asset Management, 7(05), 546-56.

Alshihre, F, Chinyio, E, Nzekwe-Excel, C and Daniel, E I (2020) Improving clients’ satisfaction in construction projects: the case of Saudi Arabia. Built Environment Project and Asset Management, 10(05), 709–23.

Assaf, S, Hassanain, M A, Abdallah, A, Sayed, A M and Alshahrani, A (2019) Significant causes of claims and disputes in construction projects in Saudi Arabia. Built Environment Project and Asset Management, 9(05), 597–615.

Bandara, C, Dissanayake, D, Karunasena, G and Madhusanka, N (2018) Mitigation of challenges in sustaining green certification in the Sri Lankan hotel sector. Built Environment Project and Asset Management, 8(05), 515–27.

Blay, K B, Tuuli, M M and France-Mensah, J (2019) Managing change in BIM-Level 2 projects: benefits, challenges, and opportunities. Built Environment Project and Asset Management, 9(05), 581–96.

Cheng, J C P and Venkataraman, V (2016) Analyzing relationships between project team compositions and green building certification in green building projects. Built Environment Project and Asset Management, 6(05), 449-61.

Crippa, J, Boeing, L C, Caparelli, A P A, da Costa, M d R d M M, Scheer, S, Araujo, A M F and Bem, D (2018) A BIM–LCA integration technique to embodied carbon estimation applied on wall systems in Brazil. Built Environment Project and Asset Management, 8(05), 491–503.

Dolla, T and Laishram, B S (2018) Procurement of low carbon municipal solid waste infrastructure in India through public-private partnerships. Built Environment Project and Asset Management, 8(05), 449–60.

Ekanayake, E M A C and Sandanayake, Y G (2017) LIVE approach: Lean integrated value engineering for construction industry. Built Environment Project and Asset Management, 7(05), 518-33.

Ekanayake, E M K and Perera, B A K S (2016) Appropriate delay analysis techniques to analyse delays in road construction projects in Sri Lanka. Built Environment Project and Asset Management, 6(05), 521-34.

Hu, W and Panthi, K (2020) Project status reporting system for pipeline relocation programs. Built Environment Project and Asset Management, 10(05), 693–708.

Ismail, S, Musawa, M S and Ahmad, H (2019) Transparency of public private partnership (PPP): the extent of mandatory information disclosure. Built Environment Project and Asset Management, 9(05), 655–68.

Juan, C and Olmos, F (2019) Public–private equity joint ventures and risk transfers in motorways of the sea. Built Environment Project and Asset Management, 9(05), 669–82.

Kwofie, T E, Ohis Aigbavboa, C and Thwala, W D (2019) Communication performance challenges in PPP projects: cases of Ghana and South Africa. Built Environment Project and Asset Management, 9(05), 628–41.

Leo-Olagbaye, F and Odeyinka, H A (2020) An assessment of risk impact on road projects in Osun State, Nigeria. Built Environment Project and Asset Management, 10(05), 673–91.

Liyanage, C, Dias, N, Amaratunga, D and Haigh, R (2017) Current context of transport sector in south Asia: Recommendations towards a sustainable transportation system. Built Environment Project and Asset Management, 7(05), 490-505.

Mallawaarachchi, H, De Silva, L and Rameezdeen, R (2016) Indoor environmental quality and occupants’ productivity: Suggestions to enhance national green certification criteria. Built Environment Project and Asset Management, 6(05), 462-77.

Medimagh, S and Triki, A (2019) The PPP performance based on the co-creation with customers. Built Environment Project and Asset Management, 9(05), 642–54.

Oshodi, O S, Awuzie, B O, Akotia, J, Ademiloye, A S and Ngowi, A (2020) A bibliometric analysis of recycled concrete research (1978–2019). Built Environment Project and Asset Management, 10(05), 725–36.

Pérez, C T and Costa, D (2018) Developing a taxonomy of transportation waste in construction production processes. Built Environment Project and Asset Management, 8(05), 434–48.

Pantzartzis, E, Deka, L, Price, A D F, Tann, C, Mills, G R W and Rich-Mahadkar, S (2016) Sustainable management of NHS assets backlog maintenance. Built Environment Project and Asset Management, 6(05), 535-52.

Patil, N A and Laishram, B S (2016) Sustainability of Indian PPP procurement process: Development of strategies for enhancement. Built Environment Project and Asset Management, 6(05), 491-507.

Ranawaka, I and Mallawaarachchi, H (2018) A risk-responsive framework for green retrofit projects in Sri Lanka. Built Environment Project and Asset Management, 8(05), 477–90.

Samaraweera, A, Senaratne, S and Sandanayake, Y (2018) Nature of construction project cultures in the public sector: case studies in Sri Lanka. Built Environment Project and Asset Management, 8(05), 557–68.

Victoria, M F and Perera, S (2018) Managing embodied carbon in buildings: a Pareto approach. Built Environment Project and Asset Management, 8(05), 504–14.

Victoria, M F, Perera, S, Davies, A and Fernando, N (2017) Carbon and cost critical elements: A comparative analysis of two office buildings. Built Environment Project and Asset Management, 7(05), 460-70.

Waidyasekara, K G A S, De Silva, L and Rameezdeen, R (2016) Water use efficiency and conservation during construction: Drivers, barriers and practices. Built Environment Project and Asset Management, 6(05), 553-66.

Weerasinghe, A S and Ramachandra, T (2018) Economic sustainability of green buildings: a comparative analysis of green vs non-green. Built Environment Project and Asset Management, 8(05), 528–43.

Yumarni, T and Amaratunga, D (2018) Gender mainstreaming as a strategy to achieve sustainable post-disaster reconstruction. Built Environment Project and Asset Management, 8(05), 544–56.

Zamenian, H, Choi, J, Sadeghi, S A and Naderpajouh, N (2017) Systematic approach for asset management of urban water pipeline infrastructure systems. Built Environment Project and Asset Management, 7(05), 506-17.

Zanni, M, Ruikar, K and Soetanto, R (2020) Systematising multidisciplinary sustainable building design processes utilising BIM. Built Environment Project and Asset Management, 10(05), 637–55.

Zin, Z M I, Kulatunga, U and Thayaparan, M (2016) Malaysian experience with public-private partnership: Managing unsolicited proposal. Built Environment Project and Asset Management, 6(05), 508-20.