A comparative analysis of conventional RCC slabs and Composite Steel Deck Slabs during the construction phase.

Abstract

Concrete and steel are by far the most popular when it comes to construction materials in Uganda and the world at large, particularly for projects of medium and low height. In the past decades, Concrete has been used as the main composite material for build construction but recently we have witnessed an overwhelming adoption of Structural steel being used for the construction of tall buildings. This has mainly been attributed to the need to optimize costs and fast & timely delivery of project time lines which have been and are still the major challenges to construction projects This study presents a comparative analysis of Reinforced Cement Concrete (RCC) slabs and Structural Steel Decked (SSD) slabs, with a particular focus on their cost and time efficiency during the construction phase. Using the proposed Kabira Country Club Hotel extension project as a case study, the research evaluates material and labour costs, construction durations, and key structural characteristics of each slab system. Data was collected through site observations, construction records, and project documents, and analysed using both qualitative and quantitative methods. The findings indicate that SSD slabs offer notable advantages over RCC slabs, including a 20.3% reduction in total construction cost and a 43.75% decrease in construction time. Additionally, SSD systems simplify labour requirements by eliminating traditional formwork and reducing reinforcement needs. The study concludes that SSD slabs are a more efficient alternative for modern construction projects where time and cost are critical considerations. Recommendations are made for broader adoption of SSD systems, further training for construction professionals, and additional research into long-term performance and sustainability factors.