![]() ![]() ![]() The NIST experiments include beam-column assemblies from the second-floor framing system of a ten-story building and each span is 20 feet long. The ETABS model results are compared with experimental results of two steel frames with two-spans conducted by the National Institute of Standards and Technology (NIST). In this paper, a non-linear time history pull-down model of a two-span steel frame is analyzed in ETABS. Therefore, the development of a non-linear time history pull-down model that is validated with experimental results would be beneficial for producing acceptable and efficient design solutions, particularly for practicing structural engineers. While high level finite-element models incorporating non-linear dynamic analysis will produce more realistic results in progressive collapse scenarios, they are computationally time consuming. It eventually causes widespread structural damages and a disproportionate collapse. Progressive collapse, also known as disproportionate collapse, describes a chain reaction of structural element failures in which a primary structural element failure results in the failure of adjoining structural elements. This study will help construction engineers and practitioners to better understand effective approaches for lifting the modules of modular projects. To overcome the difficulties associated with ascertaining the center of gravity for modular parts, this simulation investigates various locations of lifting points, and identifies the best locations for the lifting process. ![]() A sample study is presented, in which the lifting operation of a modular building from an actual project (i.e., the University of Nevada, Las Vegas’ Solar Decathlon 2020 modular house) is structurally simulated. In this regard, this paper aims to introduce the major challenges in lifting and transporting the modules. Despite their significance, the lifting and transporting of modular buildings and modular components have received relatively insufficient attention. Any accident during the shipping processes of large modules can have detrimental consequences in the costs, schedules, and safety of the affected construction projects. One of the critical difficulties pertains to the large sizes of modular components, resulting in challenges associated with shipping processes. Although modularization can provide a variety of advantages, difficulties exist, especially with respect to implementation. In recent years, modularization, as an effective method of construction, has gained in popularity and received significant attention from the construction industry. ![]()
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