ABSTRACT
COVID-19 has intensified the need for faster and more efficient construction in Brazil. In this regard, offsite construction methods are important, in particular, modular construction with steel 3D modules. While extensively discussed in the literature, details, such as the inputs of the process related to modular construction, are rarely provided. The purpose of this paper is to map the process involved in modular construction with steel 3D modules, including the operations and inputs. To this end, based on a literature framework, a case study was performed considering six cases of modular construction with steel 3D modules carried out by three different companies. As a result, the process is described in a flowchart, composed by six stages: 1) design and planning;2) substructure execution;3) production of the modules;4) transport of the modules;5) assembly;and 6) installation. This study shows that the fundamental steps involved in the production of the modules are uniform among the construction projects studied. However, the customization and, consequently, the inputs used to produce the modules vary greatly. Thus, this paper contributes to structuring and documenting the process involved in modular construction with steel 3D modules, including the operations and inputs.