Abstracts – Browse Results
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Abediniangerabi, B, Shahandashti, M and Makhmalbaf, A (2021) Coupled transient heat and moisture transfer investigation of facade panel connections. Journal of Engineering, Design and Technology, 19(3), 758-77.
Adamtey, S (2021) Cost and time performance analysis of progressive design-build projects. Journal of Engineering, Design and Technology, 19(3), 686-97.
- Type: Journal Article
- Keywords: duration; performance; owner; quantitative research; sample size
- ISBN/ISSN:
- URL: http://dx.doi.org/10.1108/JEDT-05-2020-0164
- Abstract:
The purpose of this paper is to investigate and determine the time and cost performance of progressive design-build (PDB) projects compared with that of design-build (DB) projects. The objective is to provide empirical evidence on the performance of PDB delivery method. A quantitative research approach was used by analyzing time and cost data collected on 75 PDB and 92 DB projects from the database of Design-Build Institute of America. One-way analysis of variance was used to determine statistical difference in time and cost performance between PDB and DB. PDB projects have a comparatively better time performance than cost performance. When compared with DB projects, there was a statistically significant difference in time overrun with PDB performing better than DB (0.41 vs 8.0%). Additionally, about 80% of PDB projects had shorter or as scheduled duration compared to 74% for DB. There was no statistically significant difference of cost performance between PDB and DB. The main limitation is the sample size of 72 PDB projects. It is recommended that further research should be conducted using a larger sample size to confirm the findings of this study. PDB will be more beneficial for projects with sensitive deadlines. For an owner deciding between PDB and DB, the advantage of using PDB is in its time performance, which may lead to the project being completed on or ahead of time. As such, PDB can serve as another “tool in the toolbox" for owners to help in reducing construction delays. This paper is the first attempt to provide an empirical evidence of the cost and time performance of PDB based on analyzing multiple projects. Owners will be better informed when selecting PDB for their projects.
Amewornu, E M and Nwulu, N I (2021) A framework for the techno-economic and reliability analysis of grid connected microgrids. Journal of Engineering, Design and Technology, 19(3), 659-85.
Ayman Ahmed Ezzat, O and Lamis Yasser Wagih, Y (2021) A framework for implementing integrated project delivery in architecture design firms in Egypt. Journal of Engineering, Design and Technology, 19(3), 721-57.
De-Graft, O-M, Adjei, T K, David Mensah, S, Edwards, D J and Hosseini, R M (2021) Mainstreaming sustainable development goals in Ghana's energy sector within the framework of public–private partnerships: challenges, opportunities and strategies. Journal of Engineering, Design and Technology, 19(3), 605-24.
De-Graft, O-M, Debrah, C, Oduro-Ofori, E, Edwards, D J and Prince, A-A (2021) Attributable indicators for measuring the level of greenness of cities in developing countries: lessons from Ghana. Journal of Engineering, Design and Technology, 19(3), 625-46.
Mhundwa, R and Simon, M (2021) Electrical energy prediction using a surface fitting model for an on-farm direct expansion bulk milk cooler (DXBMC) in South Africa. Journal of Engineering, Design and Technology, 19(3), 778-94.
Mostafaeipour, A, Qolipour, M, Rezaei, M, Jahangiri, M, Goli, A and Sedaghat, A (2021) A novel integrated approach for ranking solar energy location planning: a case study. Journal of Engineering, Design and Technology, 19(3), 698-720.
Muhammad Ridwan Andi, P, Adhe Rizky, A, Salvia, F A and Abdullah, A (2021) A novel optimisation model in the collaborative supply chain with production time capacity consideration. Journal of Engineering, Design and Technology, 19(3), 647-58.
Velasco-Aquino, A A, Jose Adan, E-M, Perez-Sanchez, J F, Zuñiga-Leal, C, Palacio-Perez, A and Suarez-Dominguez, E J (2021) Compressed earth block reinforced with coconut fibers and stabilized with aloe vera and lime. Journal of Engineering, Design and Technology, 19(3), 795-807.