Search Results (2)

This study presents the partial real-world validation of a previously developed framework that integrates Lean Construction principles, Building Information Modeling (BIM), and Emerging Technologies to optimize construction management. While the original framework was validated through expert consensus using the Delphi Method, this research applies it in the context of Saudi Arabia to test its feasibility during the design phase. A case-based approach was adopted involving a confidential mega-scale project. Key Performance Indicators (KPIs) were used to assess impact, including cost and time efficiency, productivity, waste reduction, quality, safety, stakeholder satisfaction, and process automation. Our results revealed a 25% improvement in cost efficiency, a 40% acceleration in design delivery, a 25% increase in productivity, 70% process optimization and automation, 100% elimination of non-value-adding activities, and a 20% enhancement in design quality. Stakeholders reported high levels of satisfaction, citing transparency, real-time collaboration, and enhanced decision-making as major benefits. These findings confirm the framework’s potential for transforming project delivery through integrated digital and Lean strategies. Full article

This study investigates the progressive compressive behavior of modular interior frames with rotary-type module-to-module inter-modular (M2M) connections under sequential column failure. A novel two-stage testing protocol was applied, compressing the left upper column to failure, followed by the right, to simulate realistic loading progression in prefabricated column-supported volumetric modular steel structures. Detailed refined finite-element models (FEMs) were developed and validated against experimental results, accurately capturing local and global responses with an average prediction error of 2–10% for strength and stiffness. An extensive parametric study involving varying frame configurations evaluated the influence of frame member geometric properties, connection details, and column/beam gap interaction on progressive collapse behavior. The results demonstrated that upper columns govern failure through elastic–plastic buckling near M2M joints while other members/connections remain elastic/unyielded. Increasing column cross section and thickness significantly enhanced strength and stiffness, while longer columns and prior damage reduced capacity, particularly during right-column loading. Conventional steel design codes overestimated column strength, with mean P_u,FEM/P_u,code ratios below unity and high scatter (Coefficient of variation ~0.25–0.27), highlighting the inadequacy of isolated member-based design equations for modular assemblies. The findings emphasize the need for frame-based stability approaches that account for M2M joint semi-rigidity, sway sensitivity, and sequential failure effects to ensure the reliable design of modular steel frames under progressive compressive loads. Full article