IMPACT OF SHORING AND SCAFFOLDING ON CONSTRUCTION PERFORMANCE IN ADDIS ABABA

The construction sector in Ethiopia contributes significantly to economic growth, but it continues to suffer from delays, cost overruns, and safety risks. This is partly due to inadequate shoring and scaffolding practices. This study investigated the impact of shoring and scaffolding systems on the performance of building construction projects in Addis Ababa. Data were collected from 167 professionals across 57 public projects using questionnaires, interviews, and case studies and were analyzed through descriptive statistics and factor analysis. Findings show that poor practices in shoring and scaffolding lead to collapses, cracks, deflections, and misalignments in concrete structures, while also contributing to up to 5% of project costs and 17.5–27.6% of project durations. Moreover, 51% of site accidents were associated with failures in these systems. Material type (metal vs. eucalyptus), quality of components, and working methodology were found to be the most influential factors. Case study comparisons confirmed that metal systems are safer, faster, and more cost-effective than timber, despite their higher initial cost. The study recommends integrating proper design, planning, and monitoring of shoring and scaffolding early in project development. For the industry, adopting standardized metal systems, enforcing safety training, and implementing quality control can substantially reduce risks, enhance productivity, and improve overall project performance. Keywords: Cost, Quality, Safety, Scaffolding, Shoring, Project Performance