Abstract
The innovation of cold-formed steel increases along with the development of sustainable development principles that prioritize eco-friendly, practical, and economical materials. This material, being recyclable, practical, lightweight, and durable, also has the disadvantage of a thin profile thickness, so that it is prone to buckling. In this study, an experimental study was conducted related to cold-formed steel composite beams with concrete material that also contained cavities to reduce the weight of the beams. The specimens are concrete and have a double canal profile of C80.30.9 with a profile thickness of 0.75mm. The connections are made using SDS 12x20 screw connections with a spacing of 150, 200, and 300 mm. The beam span is subjected to concentrated load until the structure collapses. From this research, it was found that collapse from the flexural beam is caused by cracks due to bending moments or bending collapse. The depth of the crack that occurs beyond the cold-formed steel inside the concrete.
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