TY - JOUR A1 - Feucht, Thilo A1 - Waldschmitt, Benedikt A1 - Lange, Jörg A1 - Erven, Maren T1 - Additive manufacturing of a bridge in situ JF - Steel Construction: Design and Research N2 - Additive manufacturing (AM) is playing an increasing role in the production of complex steel structures. Robot‐ or machine‐guided gas‐shielded metal arc welding (GMAW), known as wire and arc additive manufacturing (WAAM), is suitable for this purpose. A small footbridge was designed in shell form at TU Darmstadt. It was completely additively manufactured over a stream on site using a welding robot. The work called for cantilevered manufacturing without support structures, which poses special challenges in manufacturing. This paper describes selected aspects of this project: the preliminary strength studies, the manufacturing strategy to ensure homogeneous manufacturing and the findings from on‐site manufacturing. In addition, investigations were carried out which led to a notable increase in the deposition rate with the right choice of gas and wire. UR - https://doi.org/10.1002/stco.202100045 Y1 - 2022 UR - https://doi.org/10.1002/stco.202100045 UR - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:573-58548 SN - 1867-0539 VL - 15 IS - 2 SP - 100 EP - 110 PB - Ernst & Sohn CY - Berlin ER -