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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Mid-span vertical deflection vs. vertical loads of the tested beams: (a) Effect of the web conditions; (b) Effect of the HF length; (c) Effect of the stiffeners; (d) Effect of the welding conditions.