Steel Modular Construction: Concepts and Solutions of the R2u Project

Modular construction has emerged as an innovative solution that accelerates construction schedules, improves quality, and reduces environmental impact compared to traditional construction. By manufacturing components in a controlled environment and subsequently assembling them on site, this approach promotes industrialisation, efficiency, precision, and waste reduction. The R2U | Modular Systems project develops three‐dimensional steel modular systems aimed at transforming the construction sector in Portugal from a conventional model to an industrialised, efficient, and sustainable one. The project focuses on the global behaviour of modular buildings and on innovative inter‐modular connections, which are crucial for the stability, strength, adaptability, and rapid reuse of modules. This paper presents the fundamental concepts of the R2U structural system, highlighting its potential for sustainable, adaptable, and reusable construction practices, and promoting the widespread adoption of modular solutions.