Assessing the Impact of Constraining Factors on Design-Bid-Build Project Delivery: A Relationship Strength Analysis

This study examines the strength of the relationship among constraining factors impacting Design-Bid-Build (DBB) project delivery. Data collection involved a structured questionnaire survey with 124 valid responses. Using Pearson correlation analysis revealed strong interdependencies among these factors, particularly between contractor-related factors (CRF) and project external-related factors (PERF) (0.855), design-related factors (DRF) and owner-related factors (ORF) (0.839), DRF and design documentation-related factors (DDRF) (0.821), CRF and project collaboration-related factors (PCRF) (0.815), DRF and PCRF (0.811), PCRF and PERF (0.808), DRF and CRF (0.803), PCRF and ORF (0.797), DDRF and ORF (0.793), DRF and PERF (0.759), CRF and DDRF (0.737), ORF and CRF (0.733), PCRF and DDRF (0.723).This suggests that effective collaboration is integral to managing these critical project components. All correlations are statistically significant with a p-value of <0.001, indicating robust linear relationships between these factors. The study underscores the importance of effective collaboration between project stakeholders to address challenges related to design documentation, contractor involvement, and external conditions. Furthermore, issues related to design documentation (DDRF) and consultant-related factors (DRF) significantly influence project outcomes by affecting owners and contractors' performance. The findings indicate that the interconnectedness of these constraining factors plays a critical role in DBB project success, emphasizing the need for proactive management, communication, and collaboration throughout the project lifecycle. The study recommends for improving design documentation quality, enhancing stakeholder collaboration, and implementing comprehensive risk management strategies.